Contribution of UV portion to WPC exposure is negligible with common lenses.
"Well, some say combination of UV-rich light and vintage (uncoated) lens is fastest, but i would really doubt the UV...
Type: Posts; User: knuf; Keyword(s):
Contribution of UV portion to WPC exposure is negligible with common lenses.
"Well, some say combination of UV-rich light and vintage (uncoated) lens is fastest, but i would really doubt the UV...
Hi Bob,
could you tell me the year of my 65364, please?
thx
fomaspeed 311s, linhof super technika 9x12, fujinon 300mm @ f5.6, natural + artificial light
169239
Thx.
Exp was ~ 4s using lens cap. Need to find some way to calm down the wiggly camera, though.
paper negative, fkd 18x24, industar 300mm, fomaspeed 311s @ iso6, fomatol lqn, left unretouched
168454
fomaspeed 311s, fkd 18x24, industar-37, 300mm @ f8, natural + artificial light
168419
1. UV portion is almost useless - won`t pass through glass below 350nm. you need massive blue portion instead
2. hybrid (custom wavelenghts) LED modules are best for this . I use hybrid aquarium...
my street
9x12 fomaspeed 311S, cropped to square
through 1.5$ plastic lens (f~25mm)
160598
Thx!
That vintage pose was his idea actually :)
It`s combination of two DIY LED lights.
Description here :
...
two from recent session
jana + peter
owh, 1s@5.6
160034
one of the better plates from my 2nd session . lessons learned :
- how long to wait for collodion to settle before dipping it into silver
- too fast dipping and design of dipper causes swirly...
hmm, understood
does it mean that all materials are fluorescent in VIS after exposure to UV ?
Interesting pictures, somehow mysterious as best UV capable lenses (not-fluorite) can see down below to maybe 320nm and have zero transmittance in UV-B / UV-C .
Or is he using 7000$ nikon 105/4.5 ?
1st light : 24x 48LED panels (5630 type)
- 24 panels : 80 USD
- heatsinks : 30 USD
- power supply : 30 USD
- light stand ...
finally got all materials needed to test the LED lights - my first wet plates ever
two lights from 200 cm placed next to camera lens to get even illumination
1st light : 24*48 5630 LED panels...
well, some say combination of UV-rich light and vintage (uncoated) lens is fastest, but i would really doubt the UV transmittance of any glass. Looking at salted collodion spectral sensitivity, it...
Hi, i`m currently building two lights for wetplates :
1. made of 24 panels with 48 5630 cold white LEDs each - 1152 LEDs total from 40cm*20cm surface. It should give around 20k lumens at lower end...
just testing newly acquired 5x7 camera while waiting for new retropan 320 in 5x7, my first attempts on paper negs
fomaspeed 311S as ISO3, xenar 150/4.5, fomatol P in stock, v500 scan
135334
hola,
i have a chance to buy set of 5 linhof filters in original boxes for 20E. these are referred as 42mm drop-in, slip-in or lollipop filters, but i do not know what lens hood / filter holder...