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thorny question 1247.JPG
04-Nov-2013

thorny question 1247.JPG

Canon EOS Rebel T3i
1/500s f/8.0 at 85.0mm iso400 full exif

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Lensrentals05-Nov-2013 14:19
I believe the image meets your criterion that a "corner is defined as the area bounded by the square made from perpendicular lines drawn at 25% of the length of horizontal and vertical sensor edges from the actual sensor corner." The image is "a real-world object that is not a test chart of any type. Double bonus points if the image is of something outdoors."

I shot handheld with my 85mm f/1.8 lens because, at the same distance, it would give slightly more depth-of-field than my 100mm f/2. Because it was breezy, I selected a faster prime lens to keep shutter speeds higher, although I was eventually able to shoot at f/8. This is also why I shot at ISO 400 vs ISO 200, and did not use a monopod or tripod. I shot this at f/8, thinking this would give me the best depth-of-field while maintaining an adequate shutter speed and avoiding diffraction. Finally, I reduced exposure by 1/3 EV, and set the white balance to "shade" to emphasize the reds, knowing I would not be able to edit the photo.
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