Field curvature + lens distortion in group shots

Started Aug 8, 2012 | Discussions thread
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CherryO
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Field curvature + lens distortion in group shots
Aug 8, 2012

On many occasions (weddings, events) I have been required to take a group shot of as many as 150 people. Something I have always struggled with is keeping the people on the edges nice and sharp compared to in the centre. This has especially been a problem since I switched to using the 17-55/2.8. I've been finding that at, say, 20mm and f/8 I still have distorted and oof faces towards the edges. I know that this lens is considered to have strong field curvature.

I have two questions:

1. What Nikon lens has the lowest field curvature and distortion between 20 and 24mm?

2. Is there a trick that anybody knows of to reduce this effect (in situations when one can't get far enough away from the group to use a longer focal length)?

Thanks,
Owen
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http://www.flickr.com/photos/owencherry

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