Lea 3 is a sensitive collodion and part of the overall light was naturally quite strong natural light through the window.
Thank you very much.
Lea 3 is a sensitive collodion and part of the overall light was naturally quite strong natural light through the window.
Thank you very much.
Using UVP-X and the B&S developer 1:3 (though for half the time they suggest), I have gotten as low as 160Ws with no additional sources of light. Just depends on what you're illuminating, how you're illuminating it, and the chemicals you're using. UVP-X plus B&S seems to be at least 3 stops faster than most people's collodion when "pulled" to 20" of development to have a complete tonal scale. At the recommended time, it's at least 6 stops faster but too contrasty/wetplatey for my tastes. More exposure and less development gives a gentler tonal scale.
UVP-X and B&S Developer 1:3 for 20"
f/4.5 Tessar wide open
900Ws into a 22" silver beauty dish about 30" from the subject plus 300Ws into a random 8" bowl reflector about 4 feet from the subject as fill.
Overall, this one is perhaps a quarter stop over-exposed, so I should have used less light. Before varnish, the very lightest tones wanted to run together, which means it's just a little hot.
20181230-1.jpg by Ty Williams, on Flickr
Last edited by paulbarden; 10-Feb-2019 at 18:24.
Thanks!
Yes, I seem to be able to use a LOT less light than most other people. I think it's a combination of 2 factors: the developer and collodion combination I use seem to be extremely synergistic and my wife and I have a good hard science and chemistry background so our lab technique is cleaner than what I've observed from other wetplaters.
Love the blur with that lens, Paul! Lovely shot in general.
Here are a couple of interesting characters I met in the park the other day and their van. Sunny and then clouds and rain on and off threw off all my exposures that day. Everything a little overexposed (overcompensating).
5x7 tintypes. New Guy collodion. Coffer's positive developer. Top photo with a B&L 5x7 Tessar 1c f/4.5 and the bottom with an Osaka Wide Field 120mm f/6.3.
Bookmarks