*At 300mm zoom range the highest aperture is limited to 5.6 (You will have to use very slow shutter speed to snap fast action shots; remember the inverse relation between aperture and shutter speed.)
*The lens size/weight combination makes it hard to hold steady when attached to a camera like the Rebel XT
*Slow and often inaccurate auto focus (I just don't understand why Canon makes a USM version of this lens for $20 more, but never includes it in the triple rebate program)
*Chromatic aberration is significant in high contrast lighting like in full sun (if you do not know what Chromatic aberration means search the term online or check out my review of the Canon 28mm 2.8 on Amazon, but to summarize, it would be a discoloration at the fringes of objects in your picture)
Those kinds of weakness will limit your ability to use this lens in all sorts of other situations/circumstances. As a practical rule to follow, if the lighting is less than ideal this lens will give you a hard time. Meaning, it will be possible to use it, but you may get too many blurry images because of shake from slow shutter speeds. As for what are ideal lighting conditions? That would be full sun with few or no clouds and with the light bathing your subject/object from the front or the side.
So is this lens that bad? Not really, as with many other lenses, when the lens is coupled with a good camera it still out performs most Point and Shoot cameras. Plus it provides results at par or slightly below the kit lens (18-55). So if you are satisfied with your kit lens, which provides you with a zoom range comparable to 3X zoom (55/18= 3), why not add another lens that will expand your zoom range by another 4X (300/75=4)? Nothing wrong with expanding your horizon!
PS. TWO MORE POINTS ABOUT USING THIS LENS: First, if you're confident you can handhold this lens at slow shutter speeds (I know I can't) then the low maximum aperture shouldn't be a major problem. Second, if you're fine shooting at high ISO (more like 400 or 800) then again the low maximum aperture shouldn't be a problem. The nice thing about photography is that you can do one thing in so many ways, so don't be afraid to explore with this lens!
ไม่มีความคิดเห็น:
แสดงความคิดเห็น