New Holga 120 Pinhole
Has anyone been working with the new Holga120 PC pinhole camera? I just bought one from B&H, and they have both the square shooter and the wide angle; I went for the square.
I'm going to be using 400 ISO film to start out, and was wondering if anyone has exposure time recommendations. The aperture is F/192. I'm not a technical type photographer so my natural inclination would be to just try random exposure times until I got decent results. But with the price of film and processing being what it is I thought it might be wise to ask the advice of more experienced pinhole photographers.
I'll be using it in both brightly-lit outdoor situations as well as bad weather, rainy days, etc. So if anyone has suggestions I'd be happy to try them out.
Thanks to all, I always receive helpful information on this site!
P.S. here's a couple of links to my book and blogs
(The first picture in the Photocommentary blog was taken with a Holga by the way.)
Here's a site that has some general guidelines for exposure if you scroll down just a bit.
You can get a table with the exposures equivalent for your f-stop and reciprocity failure for different films with this software http://www.pinhole.cz/en/pinholedesigner/
For example, for FP5
"Pinhole camera exposure times
f number: 192
Exposure factor for f number 22: 76,2 x
Including reciprocity failure for film: Ilford HP5 Plus 400
Time for f 22 Resulting time
1/60 3 s
1/30 6 s
1/15 13 s
1/8 29 s
1/4 1 m
1/2 4 m
1 s 13 m
2 s 46 m
4 s 3 h
8 s 11 h
15 s 38 h
30 s 153 h
1 m 608 h
2 m 2427 h
Created by PinholeDesigner 2.0, film database v1 (9. 6. 2003)
Copyright © David Balihar, 2001-2003 "
Originally Posted by Lowenburg
Fascinating family history and pictures: a treasure in the real sense!
Very kind of you to share
I've been using the wide angle Holga pinhole for a few months now. Absolutely love it.
For exposure I've been following a very simple formula that has worked really well. Measure for f/5.6 and multiply the shutter speed by 1,000.
So for example: yesterday on a bright day my meter measure f/5.6 @ 1/400th of a second (I was using ISO 100 film). So one divided by 400 = .0025 and then times 1,000 you get 2.5 seconds.
My cell phone has a calculator on it so doing this quick little formula when out and about is really easy.
It may not be a perfect formula, but I always get in the pallpark when I use this and for pinhole it's good enough.
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