Re: Primer on photographic exposure, etc.
Re: Primer on photographic exposure, etc.
- Subject: Re: Primer on photographic exposure, etc.
- From: Ben Goren <email@hidden>
- Date: Tue, 21 May 2013 11:04:51 -0700
On May 21, 2013, at 10:22 AM, Ben Goren <email@hidden> wrote:
> On May 21, 2013, at 9:27 AM, José Ángel Bueno García <email@hidden> wrote:
>
>> As you might know, the angle of view is not a problem but the direction of light yes.
>
> What it took me a while to figure out is that the two are very closely related.
Thinking about this further, optimum geometry for copy work is probably 45° + (1/2 angle of view)/0. For a 50mm lens, that would be 68°/0, much steeper than I've been using. For 24mm, that's 87°/0 -- almost perfect side lighting and easily explaining my problems. For 180mm, it's 52°/0, close enough to 45°/0 that nobody is going to notice.
Cheers,
b&
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