วันอังคารที่ 8 พฤษภาคม พ.ศ. 2555

Canon EF 14mm f/2.8L USM

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Canon EF Autofocus Lenses Canon s reputation for excellence in optics has been well established for years. And with the introduction of EF lenses for the EOS, it s only getting better. EF Lenses have the largest diameter mount of any 35mm camera, which not only strengthens the whole system, but permits optical innovations never before possible. L-Series lenses have better sharpness and contrast because Canon uses aspherical elements to eliminate spherical aberrations. In addition, the L-Series telephotos use UD (Ultra-low Dispersion) glass to reduce chromatic aberration resulting in more accurate colors. A built-in Ultrasonic focusing Motor (indicated by USM) provides pro-quality AF speed with split-second accuracy. This ultra-wide-angle lens has the shortest focal length in the L-series. Element 2 is an aspherical lens to correct distortion. Other aberrations such as astigmatism are also corrected, resulting in ideal image quality. The lens has a fixed, petal-type hood and a gelatin filter holder at the rear.

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วันอาทิตย์ที่ 6 พฤษภาคม พ.ศ. 2555

Canon EOS 5D

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Here are the basics that I considered and have found out from about 9 months of ownership. Keep in mind opinions on photography equipment varies greatly by the user and what the equipment is used for so while I think the 5D is near-perfect, others might not.

While the positives and negatives seem even in number, the positives FAR outweigh the negatives. I have no regrets about my purchase.

Positives
+Full frame sensor: allows me to acheive true wide angle photographs with no crop factor
+Image size: I have had a number of large (20"x30") prints made and the results are flawless
+Ability to shoot in RAW: While the files are huge (12MB+ each), the information and options this format provides has really expanded my technical and creative abilities.
+Build quality: While I haven't tried the true Canon Pro series (1 series), the 5D is pleasantly sturdy and feels solid in my hands. I can see how some might find it too heavy, especially with an L series lens.

Negatives-
-Lens requirements: Because of the full frame sensor, the 5D brings out the best (and worst) out of the corners and edges of your lenses. You will be able to tell a lesser quality lens more easily on the 5D than on a cropped sensor lens. The obvious negative is that better lenses like the L-series are generally much more expensive ($600+)
-No flash: Not a big deal to me but I've noticed that people are surprised when they see the 5D has no flash. This doesn't matter that much since built in flashes are rarely useful in most situations.
-Dust in sensor: Make sure you get a good sensor cleaning kit shortly after getting the 5D. There are steps you can take to minimize dust like changing lenses rarely and always indoors but you will need to clean the sensor every few months depending on use. To test if you need to clean (on any DSLR), put the camera on a tripod or flat surface, point it at a white wall , focus, and shoot with a long exposure and small aperture (5+ seconds and f/16 or smaller). If there is any junk on your sensor you should see it.

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Canon EOS 50D

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Upon reading my way through every review I could find about this camera I noticed that a lot of people were upset about noise levels compared to those seen in the 40D. As I was looking to buy one or the other at the time it was very important to me to see if these noise issues were in fact true or just caused by external factors. Lucky for me a good friend has a 40D and a local camera shop was nice enough to let us borrow their 50D to snap a few comparison shots. My friend and I took shot after shot using identical settings and identical lenses under a variety of situations, (low light, high speed, high light, inside, outside, dull colors and vibrant colors). We then took the pictures, compiled them on a single memory card and displayed them on my 46" 1080P HDTV. Results were very much in favor of the 50D. Shot for shot the 50D either matched or exceeded the picture quality of the 40D in all but one situation: indoors with low light and dull colors. Under that situation the 50D seemed to noise out on the constant color areas, (beige walls for example), while the 40D tended to noise out at the interface between colors, (at the boundary of a beige wall and darm crown molding for example). Both developed noise but the 50D had more.

Overall though I was very impressed with the performance of the 50D. It picked up a lot of details that the 40D didn't even come close to getting, (thanks to the 15.1MP sensor no doubt), was much better able to capture high-speed action in daylight and only produced noisy images under very particular situations.

I purchased the 50D.

More Detail : http://www.amazon.com/exec/obidos/ASIN/B001EQ4BY0/tipfla-20


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Canon EOS 40D

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I was a long time owner of the Canon 10D which I quickly outgrew. Then, I upgraded to the 20D and have been using it for the past few years. I didn't think the 30D was a big enough step forward to warrant the upgrade. Going from the 20D to the 40D is a big leap forward.

Unboxing the 40D is about the same as the other two DSLRs I've owned. Manuals in both spanish and english, plus software for MAC and PC. I got the "body only" package as I already own the 28-135mm lens. That lens is just **ok.** and I really didn't want a 2nd copy. The battery is the bp511A so I can use the already charged one from my 20D. The strap is the same as the 20D. The compact flash memory is the same as well, so I didn't need to buy any new accessories to upgrade.

The first thing you will notice is the big display on the back. It's very nice compared to the one on the 20D. Although, I'm constantly afraid that my titanium rimmed glasses will scratch the screen. The screen is so much closer to the viewfinder compared to the little one on my 20D. I think I'll look for a clear film cover that will shield it.

The controls are very similar to the 20D/30D. However, they are moved around a bit. The menu structure is very different and it will take some getting used to. The first thing I thought of was my old 10D... and how simple it was just due to the sheer lack of features. The 40D has so many that it would be tough for a beginner to get used to them all. It might be good for beginners who are a bit techno challenged to buy a cheaper, used DSLR to get used to using a simple model... then sell it and upgrade.

The camera feels so much more solid than my 20D. The little motor that pops up the flash sounds really solid compared to the old 20D. Even the shutter sounds terrific. Very quick and quiet. The old 10D had a nice shutter sound as well. the 20D always sounded like thrashing metal to me. To contrast, the Nikon DSLRs have a slow sounding swish to them... this one is tight and quick. The camera feels about the same in my hand. Although the lines are smoothed out a bit compared to the 20D.

I tried out the live preview feature and found it annoying since I'm used to looking through the viewfinder. I think I would like it much more if this was my first DSLR as a conversion from a point and shoot where you typically only use a "live view." The LCD is viewable at a strong angle so the live view may be usable for when the camera must be held at odd angles away from the body... like over a stream or something. This camera is heavier than a point-and-shoot and you need your face to help you hold it steady. I found myself a bit wobbly when I was holding it out using the live-view feature. You'll need a high shutter speed to keep from getting shaky looking pictures.

So, what about picture quality?? It's a 10mp camera so the pictures are big. I have a workhorse MacPro tower and it has no problem working on the 10-12MB pictures that this camera produces (.jpg processing for now). I'm happy to say that the focus is spot on in all of my sample pictures from 4 different lenses (17-40 f/4L, 28-135 IS zoom, 50mm f/1.4, 100mm macro). The DPP software can be used to edit raw files if you choose to use it. It works pretty well and it was very speedy on my MacPro. You also get direct access to picture styles from within the computer software so you don't have to worry about setting it in camera. The pictures look very nice. The colors are very accurate. at iso100 the pictures are so nice and smooth. My 50 and 100mm lenses make the most buttery out of focus areas on this camera.

******ALERT******
as of this writing(9-2-2007), Aperture, Finder, Preview, Photoshop CS3 (ACR4.1), and iPhoto do not support raw image files from the 40D. This was the case with the 10D when I first purchased it and it took a few months for APPLE and Adobe to deliver updates. I'm sure Canon are working hard with vendors to get their updates in the works. The good news is that there are settings for RAW+.jpg so you can have both files when the software updates come through. If you don't like being on the "bleeding" edge of technology, then wait a few months before you plunk down the cash for the 40D.

***** ALERT UPDATE *****
As of 9-13-07, Adobe has released Camera Raw updated 4.2 which now supports the Canon 40D.
As of 10-26-07, Apple's Aperture and Mac OS 10.5 (Leopard) support Canon 40D raw files.

Picture styles are easily accessed from a dedicated button on the camera. They allow you to make quick sets for defining different picture taking scenarios. It basically does some basic post-processing work in-camera to save time later. It worked really well. I found that pictures even up at 1600iso looked usable for every day stuff (e.g. not blown up too big.). ISO can be set in 1/3 stop increments which is new for me. having iso250 just seems weird but it's actually very handy. Gives you the ability to really tweak the settings to capture as much detail as possible in a high dynamic range image (like a sunset, or a backlit portrait without fill flash). I haven't taken side-by-side shots yet but it seems like the images are more detailed with a wider dynamic range than the 20D. Maybe this is the 14bit image processing from DigicIII at work?

The camera seems more responsive than the 20D. The menu scrolling seems faster, file writing seems about as fast (probably a faster rate but bigger file).

One of the neatest features is the custom C1, C2, and C3 dial positions. You can set these up to "remember" camera settings for quick access later on. They act like the memory buttons on luxury car seats! Very handy if you take really different kinds of shots. I go back and forth from Macro to Landscape all the time so I can quickly dial in my base set and go from there.

The vibration dust remover might be a cool feature. I can't feel the camera vibrate or hear it working, which is nice. Apparently it vibrates for 1 second whenever the camera is turned on or off. I changed this setting so that it's only triggered manually by me. I figured I could just use it when I need it rather than have it going all the time. .

Another of my favorite features is the spot meter. The 10D and 20D never had this feature. Apparently the 30D does, but this one is slightly higher weight at the center point. I tried it out and it works really well in combination with the AF point selectors.

So what do I hate about the 40D? I really hate the Auto White Balance setting for indoor shots. You want to be sure to set the camera manually when you are taking the 50millionth picture of your dog. Otherwise it'll be all yellow looking. Canon, can you fix that please?? If you set it manually it looks great.

SInce I like to do available light photography I like to use mirror lock-up. I wish there was a button for that as do many other people.
Canon finally has the iso setting in the viewfinder so we'll give Canon props for that.
My last gripe is that the display screen could have a bit higher resolution. It's nice and big but could have a denser pixel set for really checking out your work.

Overall I'm sure anyone would be happy with this camera if you are willing to spend the time to learn how to use it. If you are a beginner, don't expect to take magazine quality shots on day 1. Wait at least till day 2 :-)

I must say that Nikon did come out swinging this time. The newly announced D300 is quite the camera. It will be interesting to compare the Sony CMOS pics to those produced by Canon. Had I not had a bunch of Canon gear already I might have given up the extra dough for the Nikon. Nikon (Sony) blues and reds always seem too punchy to me but that's just my personal taste. My good friend has a Nikon D200 and his pictures are just beautiful out of that camera. The Nikon D300 has some wiz-bang features but I'm not sure I would take advantage of them... nor do I think they will directly result in better pictures. Spend the $500 bucks you'll save on a photography class and you'll have more fun, meet more people, and be taking better pictures at 3 months than if you start with a really fancy camera that you can't figure out how to use.

I'm hoping Canon has been spending some time re-inventing as Nikon have over the last couple of years. The good news is that all of these cameras take good pictures; however, you have to know how to use them. When I pick up my friends Nikon is seems all foreign to me and I feel out of my element. He makes the same comments when he uses my Canon.

 

วันเสาร์ที่ 5 พฤษภาคม พ.ศ. 2555

Canon EOS 30D

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This camera offers a few well considered improvements over the 20D it replaces. The sensor and processor are the same so the image quality will not differ one iota, BUT an enlarged LCD monitor, spot metering, vastly improved shutter life and ISO displayed on the viewfinder are worthy improvements easily justifying the upgrade from the 20D. If one is considering an upgrade from the 10D my advice would be to definitely go for it. The 20D and 30D both have the "instant on" feature and this represents a vast improvement over the 10D. The 10D was felt by many to have focusing issues and though I did not have any significant problem with my 10D in that regard the 30D represents a substantial improvement in this area. Canon still is not offering (in this price range) a camera with eye control or 45 focusing points, BUT the nine focusing points that ARE offered are well placed and the camera focuses quickly and surely resulting in tack sharp photos.

The pictures this camera takes are simply beyond belief. Beautifully saturated, tack sharp, NO, and I mean NO noise at 400 or below and barely discernible noise all the way up to 1600 ISO. For all practical purposes 1600 ISO is an entirely usable speed resulting in fantastic pictures. What Canon has accomplished in reducing noise and increasing pixel density proves that they are, for now, the technology leader. Canon for now is doing a better job at controlling noise than Nikon though Nikon with the D200 comes pretty darn close except at 800 ISO and above.

The new flash system, ETTL II, available first on the 20D is a vast improvement over previous systems. The in camera processing results in exceptional and pleasing pictures. This camera has a fixed continuous shooting rate which was not present on the 20D. The megapixels stay constant at 8.2 million pixels. Many may be disappointed that the MP count was not increased and feel that perhaps a nominal increase to 10MP would have better justified an upgrade. Canon obviously feels that noise and other features are more important at this point than raw MP's and I would agree. The holy grail of digital photography is now dynamic range. And while this camera offers no improvement in dynamic range I think we can expect to see such improvements in future offerings from Canon and the other manufacturers.

One of the greatest things about digital photography is the ability to build a digital dark room for next to nothing. With the included Photoshop Elements you are well on your way to producing pictures that you could only have imagined in the pre-digital days. I am able to recoup pictures that I never would have considered salvageable before this camera. And while Elements is a great program and more than adequate for most needs I would recommend considering Photoshop CS2 for those who intend to plumb the depths of this hobby.

Another thing I like about Canon is the lens system which IMO is second to none. Also, Canon continues to innovate at a furious pace driving the price of these digital cameras relentlessly downward. This camera is being introduced at a lower price than either the 10D or the 20D. The 5D is plummeting in price and is approaching my "strike point" for purchase. I expect that we will see a sub $2000 10 MP camera with a full frame sensor in the next 18 months. Such are the economics of digital photography. It would seem that Moore's law is driving the prices down inexorabl.

Every function optimized for fast RAW and JPEG capture
The EOS 30D is one of the fastest cameras Canon has ever produced. Incorporating the fast operation of the EOS 20D, the 30D allows users to specify high-speed 5 frames per second (fps) or a new low-speed 3 fps continuous shooting for more controlled shooting and/or to save space on the CF card. And it can capture up to 30 JPEG and 11 RAW (or 9 RAW + JPEG) files in one burst. Whether it's the 0.15-second startup time, the high-speed mirror drive, the nearly instant 65-millisecond shutter release lag time or the predictive AF focusing at speeds up to 5.0 frames per second, the EOS 30D will amaze and delight photographers who don't want to wait for their camera when they're ready to shoot.

The Canon 30D's continuous shooting function
Shoot continuously at 3 or 5 frames per second.
Direct printing with PictBridge compatible printers
The EOS 30D lets you print beautiful photos with minimum time and effort - directly from the camera. It's compatible with Canon's SELPHY Compact Photo Printers, desktop PIXMA Photo Printers, and even third-party PictBridge-compatible printers.
EOS: The system
One of the EOS 30D's greatest advantages is the EOS system: compatibility with all Canon EF and EF-S lenses, EX-series Speedlites, and EOS accessories such as the Wireless File Transmitter WFT-E1. (Wireless file transmitter and lenses not included--must be purchased separately.) For high-speed processing of lossless RAW images and complete capture-to-print workflow management, the EOS 30D also comes with Canon's latest Digital Photo Professional software.
Battery grip
To extend the EOS 30D's 750-shot (CIPA standard) battery life and increase handling options, the camera is compatible with the BG-E2 battery grip. (Not included; must be purchased separately.) The BG-E2 takes two Lithium-Ion battery packs for up to 2,200 frames or six AA batteries in the supplied BGM-E2 battery magazine. (Shooting capacity with AA batteries is lower when compared with the Battery Pack BP-511A.) For easy vertical shooting, the BG-E2 provides additional shutter release, main dial, AE lock/FE lock, and AF point selection controls.
Software
As well as the latest Digital Photo Professional RAW image processing software, the EOS 30D comes with Canon EOS Solution Disk, containing the new EOS Utility (integrating remote capture software), plus the latest versions of ZoomBrowser/ImageBrowser and PhotoStitch.
The EOS 30D includes membership of Canon's online photo album, Canon iMAGE Gateway with 100 MB of space for image uploads and photo sharing. (Canon iMAGE Gateway is not available in all European countries.)


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Canon EOS 20D

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I was a 10D user for about 1.5 years. The 10D takes great pictures so why bother upgrading right? Well, now that I have messed around with the 20D a bit it was clearly the right choice... although not totally perfect.

The useful improvements for me have been 1. Faster time from turning on the camera to taking a picture. It's virtually instantaneous. The 10D took a few seconds to get going. 2. Faster writing to the CF card. This feature is nice when you are in a hurry to take several shots and then get the pics to your computer. 3. Built-in black and white mode that allows for photo filters to be digitally applied in camera with pretty darn good results. Although I prefer to apply filters in Photoshop. 4. The taller pop-up flash works better with my 17-40mm canon lens. The 10D would leave a half circle blackout between 17-24mm due to the top of the lens blocking the flash. The taller pop-up flash shoots right over it. 5. Super low noise at ISO400 and ISO800. It's even pretty good at ISO1600. With ISO expansion on you can go to 3200 but it was pretty grainy. My 10D shows noise at 400 and above.

Things I didn't realize were going to happen: My digital workflow is a bit messed up now. I usually shoot in RAW, and I use the Macintosh OS to process images. Image capture application in MAC OS 10.3.5 does not support the raw files (now .CR2 files instead of .CRW files in the 10D). 10.3.6 update now allows image capture to recognize the .CR2 files, but it won't build previews for them. That means you have to use a file browser to manage the files. iPhoto will not read the .CR2 files. The new Camera Raw Plug-in (v2.3) for Photoshop CS supports the 20D images (but is not on the list of supported cameras.) So I now use the Photoshop CS filebrowser to look at my files and figure out which ones are good. However, I still can't build icon previews for the .CR2 files so it's a bit hard to find the pics you want in a file folder. I make contact sheets for each shoot and store them with the raw files. None of these problems exist if you shoot in any of the .JPG modes.

My top five good things and my one bad thing. I'm sure the one bad thing will go away after the camera has been out a while and becomes more popular. I would highly recommend this camera to anyone who's graduated from their Digital Rebel and is wanting more.

3-2-05 **** update: iPhoto now supports .CR2 files directly from the camera or a CF card reader. You can drag them to your photoshop icon in the doc to edit the original or you can set a preference to have the jpg preview from iPhoto open in photoshop with a double click. iPhoto, image capture, Digital photo professional, phtoshop CS, photoshop 7, photoshop elements 2, 3 still will not build icon previews viewable in the finder for .CR2 files as of this update. At least iPhoto will allow me to browse photos without having to open them in DPP.

More Detail : http://www.amazon.com/exec/obidos/ASIN/B0002XQI2E/tipfla-20


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Canon EF-S 10-22mm f/3.5-4.5 USM SLR

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I am very impressed with this lens. I didn't realize just how wide-angle this lens was. At 10mm, I can stand just a few feet in front of a 13-story building, and get the whole thing in the picture, from the entrance to the top of the building.

As with all very-wide lenses, you have to be careful that you don't have people at the edges of the frame or too close to the lens, or they will appear very distorted when taking pictures at 10mm. Also note that a wide angle lens is not easy to use at first to create compelling images, as it's very easy to include too much clutter in your compositions.

PROS
- optical quality is excellent (deserves an "L" lens designation)
- uses the higher quality ring-type USM focusing
- minimum focusing distance is very close
- surprisingly lightweight
- very flare-resistant even without hood
- the only option for EOS digital cameras (Rebel, Rebel XT, 20D) to get true wide angle shots due to the smaller APS-C sensor in those cameras.

CONS
- It's expensive! But at least it is cheaper than a year ago.
- The lens is a little soft in the corners at 10mm, but is very sharp at 12mm and up.
- Canon has not formally committed to how long they will continue to make cameras and lenses using the EF-S system.
- The lens currently only works on the lower-end dSLR cameras -- the 10D, 1D, 1Ds, and 5D cameras cannot use this lens.
- The hood is not included with this lens, but it's such as ugly hood and the lens doesn't have flare problems, so I don't really think it is necessary anyway.

In 5 years when you upgrade your camera, there is a possibility that it will not support this lens. This depends on what direction Canon goes in making camera sensors:
1) continue to make cameras that use the smaller APS-C sensor, and keep improving its density to support more and more resolution. This will help keep the dSLR cameras smaller and lighter, and will necessitate making EF-S lenses the standard.
2) make the sensors match the size of a frame of 35mm film. And at the same time increase the density to yield even more resolution. Right now sensors this big are very expensive to produce.

I now think that #2 is more likely to happen. All the other lenses out there are built for a 35mm-film-sized sensor, and now that Canon has released another full-frame camera (5D) at a lower price, I'm betting that in another few years the APS-C sensor will be practically obsolete. A 5D body and 16-35 or 17-40 lens will give you better results than a 20D with this lens, but the difference in price between the two setups is a few thousand dollars right now.

The 10-22 is an excellent lens, but it will probably not hold its value as well as the Canon 16-35 and 17-40 lenses. A slightly more affordable alternative is the Sigma 10-20mm, which sounds like it nearly equals the optical quality of this lens.

More Detail : http://www.amazon.com/exec/obidos/ASIN/B0002Y5WXE/tipfla-20
 
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