I don't understand shooting B&W and B&W, high contrast test charts if
you're ultimately going to be shooting color film and real world scenes.
You could probably save on film by first filtering the duds with the
digital. If the lens doesn't cut it in the center it's unlikely to do
much good in the corners.
Chuck Norcutt
Ken Norton wrote:
>> Due to cost I'd like to make it in B&W -- CA would cause blurring, anyway.
>> I
>> can process B&W by myself.
>>
>
> Lens testing I've done on B&W has been done with Ilford PanF and Delta 100
> processed in Ilfotec DD-X. I prefer Delta 100 as the contrast is held
> better at the edges giving me better clarity of the USAF test chart
> line-pairs. The PanF has slightly more resolution, but also more grain
> scattering which makes the edge-detail a little mushy.
>
> However, some high-acutance developers will allow the grain to "migrate".
> This has the effect of sharpening the edges--not unlike USM in the digital
> world. This will make it easier to count line-pairs.
>
> You can also use Ilford FP4 film in DD-X. This thick-emulsion film has
> tremendous "migration" characteristics which give the lens tests a
> definitive yes/no interpretation of the line-pairs. It mgiht not be the
> finest-grain film (about 2-3x that of PanF and Delta 100), but it is
> generally less expensive and still quite good. It's fun, because when you
> see image details that are down to a single grain-clump you are assured that
> the lens resolved as good as is practical.
>
> Don't use Velvia or Provia because lateral-halation will kill the line-pair
> resolution.
>
> AG
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