Daan;
Looked at your insect page. Truly awesome work. Especially without a
tripod!
George
dkalmeijer@xxxxxxxx wrote:
>
> Thanks Chuck,
>
> I've made a little chart (I think I lost it somewere, but it's all in my
> head now) with the right exposure for each lens/flash/magnification
> combination. I only need do vary on this when I have a subject in a very
> bright surrounding, where the surrounding reflects a lot of light on the
> subject (bug on a white flower ...). I think it did cost me only two films
> to make this chart. This chart is really very "flat": with most lenses the
> setting doesn't vary more a single stop. F.i: with the 38 mm, T28-twin and
> Velvia, at 65 mm extension I get F16-1/3 and at 116 mm extension I get
> F11-1/3. I think this because of the "reverse square rule" that Shaw writes
> about in his close-up book.
>
> I find it near impossible to focus by changing the extension. Since I work
> without a tripod, moving the whole rig is much easier.
>
> Daan.
>
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