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November 19th, 2008

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03:20 pm - Focus Test
Here are the results of the focus test I mentioned yesterday. Let me know which image(s) appear to be in better focus than the others. Frankly, I don't see much difference.

I tried to keep the four images as similar as possible: I set the tripod up in one position, and changed camera backs and lenses, but not the lighting or anything else. All four images were shot at f/8, with focus and shutter speed set by the camera. The only processing from the RAW files was white balance adjustment, and I made sure it was the same on all four. Once in Photoshop, I only did a crop to get 640x480 pixels, and I tried to crop as much the same section of the capture as possible. However, allowing for lens fields of view and sensor size, there's some variation.

D70, 35mm

D300, 35mm

D70, 105mm

D300, 105mm

Or maybe this is just reverse bragging that I got a D300 (back in August, actually).

(2 comments | Leave a comment)


[User Picture]
Date:November 19th, 2008 11:34 pm (UTC)
I vote for the 35mm as best with the 105mm a close second. It's hard to tell because the apparent magnification is different.
[User Picture]
Date:November 20th, 2008 03:53 am (UTC)
The D300 versions look consistently sharper, but that's almost certainly because the magnification is higher; I don't think I can see past that.

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