Quote:
Originally Posted by okiscopey
Half an hour! 
Black-and-white enlarging paper usually starts fogging within a few minutes even under dim, indirect safelighting (which is what you try to achieve in a well-designed darkroom). If the paper's been exposed in a camera or under an enlarger (and thus carrying a latent image before processing) it's even more sensitive to these mis-named 'safelights' as the initial 'inertia' of the paper's response has been overcome. Also, there can be a mis-match between the type of paper and the type of safelight. Modern multigrade paper needs an orangey colour (e.g. S902 for Ilford Multigrade) rather than the traditional yellow 'OB'.
Red light affects b/w photo paper the least (given that the paper is primarily blue-sensitive), but you still can't exposethe paper to direct light for half an hour and expect it to survive!
Keep up the good work! |
i honestly never knew that "safelights" could have such a strong effect. i expected them to slightly effect the photopaper, but not make the paper go black!
anyway, we had another go today. took some pictures just to test different exposure times, nothing worth posting.
my main reason for posting is regarding using the old camera for astrophotography. im wondering if B/W photographic paper would be sensitive enough to record startrails? i don't know the exact type of photogrphic paper, all i know is that its B/W.
thanks for all your positive feedback,
Jarrod.