[pure-silver] Re: Use of Shutters in low light?
- From: "richard l. gifford" <rlgif@xxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sun, 06 Feb 2005 13:45:58 -0600
I also shoot mostly landscapes, and I think most of my
4x5 work is 1 sec or longer. I rate FP4+ at 50. I use
the old rule of thumb, smallest safe f-stop is 1/4 the
focal length, so 90mm is f22 and 127mm is f32. And
there are filter factors, especially with anything shot
on a sunny day. I looked back across notes and find
occasional exposures at 1/4 sec and even 1/8, so I
would miss a shutter, but most stuff is countable. I
remember a six minute indoor exposure. I use barrel
lenses only on the larger formats.
regards.... Dick Gifford
J.R. Stewart wrote:
> I've been wondering about something lately.
>
> I've been concentrating on large format for only about a year or so (4x5).
> Mostly landscapes using ASA 64 and 200 film). The big difference I'm seeing
> is that LF/view cameras seem to require smaller lens aperatures (for depth
> of field) or slower shutter speeds. I don't know if there's a technical
> reason for this... it may just be my attitude after lugging my view camera
> to the chosen spot for the photograph and wanting to get a shot I'd have
> given up on with MF.... but nevertheless that's my situation.
>
> I've taken a number of shots that reflect a compromise I made at the time I
> clicked the shutter at say f8 at 1/10th : poor depth of field. I suspect
> focus would have been much better at f22 at 1/2 second or f45 at 2 sec(+).
>
> So I'll ask: how often do folks really need a shutter for shooting LF? Do
> you find yourselves using T or B in the field and longer exposures? Even
> indoors using available light must force some of you to consider this "low
> light" situation a challenge. How do you handle it? Do many of you have and
> use barrel lenses for field work?
>
> Thanks for the feedback.
> J.R. Stewart
> Leesburg, VA
>
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