วันจันทร์ที่ 23 เมษายน พ.ศ. 2555
Canon EF 50mm f/1.4 USM
I bought this lens to take indoor portraits of my nine-month-old daughter using available light. I was tired of the harsh photos produced by the built-in flash on the Canon 20D or Digital Rebel. A bounce flash improves matters great deal, but I wanted to see what could be done with a fast lens.
The Canon 50mm 1.4 gobbles light. It opens up a world of indoor photography that is not possible with a 4.0 lens. The 50mm focal length combined with available light produces natural-looking results. It is exactly what your eye sees. Shadows and highlights are intact. It is a revelation if you're used to the harsh drop shadows and evenly-lit faces produced by flashes. This is a jarring step up in quality from snapshot to "wow"
As noted, focus is soft at /1.4 and begins to sharpen at /2.0 to /2.8. Not a bad thing, though. Some of my favorite pictures have been produced with the aperture wide open. The depth of field is so narrow at this point, that the subject's face is in focus, but the shoulders start to blur.
I use this lens with a 20D. The balance is perfect, the combination feels very professional and responsive. Operation is very simple. Move the camera into aperture priority mode (Av), look though the view finder and adjust the aperture until you see the shutter speed is faster than 1/30th a second (30).
I agonized over the 1.4 vs. the 1.8 versions of this lens. The additional stop does provide more shooting options. Often I'm shooting at the edge of acceptable shutter speed, and juggling both aperture and ISO. Many reviews comparing the two talk about build quality, focus motor speed/noise, etc, but the bottom line for me was the extra stop was totally worth it. If you want to shoot indoors without a flash, get the 1.4. If you simply want a nice sharp lens at this focal length, the 1.8 is for you.
As a father, my only regret is I wish I had this lens earlier. From one parent to another, I'll tell you the price of the lens is irrelevant, as the pictures it produces are priceless.
More Detail : http://www.amazon.com/exec/obidos/ASIN/B00009XVCZ/tipfla-20
More Review : http://camera.babybi.com/detail.php?id_detail=23
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