Re: Not enough exposure time
Try developing a paper with no enlarger exposure. Let us know the results.
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Re: Not enough exposure time
As you (I guess) saw a non suspicious projected image... only 3 things can go wrong:
> Developer
> Paper
> Safety light
IMHO the enlarger exposurse you made (f/22, 3 seconds) should not built density with development, guessing enlargement size was something common.
I'd do that:
1) Take a not exposed strip of paper, develop it without exposing it. Develop 2min does it go black ??
2) Repeat development of a new unexposed paper strip (2 min) in total darkness. If now result is white then it was safety/ambient light. It if not it is paper or developer.
3) Mix new developer to the right concentration, better is it is from a new purchase, try again.
4) Buy a new paper box.
Re: Not enough exposure time
Re: Not enough exposure time
I tested to see if it was my safelight earlier. I let a piece of paper sit exposed to the safelight for a few minutes and developed it. Pearly white!
That tells me it's not my safelight or paper. I made a print successfully but it was 15 seconds at f32.
The blacks seems fine so I don't think it's fogging. Im using ilford multigrade developer diluted 1+9.
Re: Not enough exposure time
Are you positive the lens is at f22, etc..? A couple of mine have levers on the back to open them up completely for focusing even when set for f16, f22, etc.. I've left them opened up a couple of times by accident.
Other than that, your methods and settings seem fine to me.
1 Attachment(s)
Re: Not enough exposure time
This lens has no such release for the aperture, but I did check just in case! Though it's very precievibly darker at f32 than it is at f4.5. My question I guess would be, how dark should it be? My only logical conclusion is that my lamp is too bright. But I inspected it and it says it's only 75 watts. With the lens stopped down to f32, I can still see it quite easily under the safelight. Here's a photo of the circle of light (through the grade 2 filter) with the lens opened to f4.5 but with the regular lights on. I use three 500 lumen LED bulbs in this hybrid bathroom/darkroom, so it's not dim by any means! However the light from the enlarger is still very clearly visible. Attachment 168626
Re: Not enough exposure time
These very short exposure times happen more often with condensor enlargers. Generally it is a combination the high output of light of the enlarger and thin negatives. Probably there is nothing wrong with your safe lights, lamp, lens or aperture.
Solution is to put a grey filter somewhere in the path of the light. I use a high qualty 3-step one that screws into the filter thread of the lens. There are also grey filters you can put into the filter drawer of the enlarger. You have to do a search here or on APUG to find the place where you can purchase them.
Re: Not enough exposure time
Quote:
Originally Posted by
TroyG
This lens has no such release for the aperture, but I did check just in case! Though it's very precievibly darker at f32 than it is at f4.5. My question I guess would be, how dark should it be? My only logical conclusion is that my lamp is too bright. But I inspected it and it says it's only 75 watts. With the lens stopped down to f32, I can still see it quite easily under the safelight. Here's a photo of the circle of light (through the grade 2 filter) with the lens opened to f4.5 but with the regular lights on. I use three 500 lumen LED bulbs in this hybrid bathroom/darkroom, so it's not dim by any means! However the light from the enlarger is still very clearly visible.
Attachment 168626
75w from a LED bulb throws x5 to x7 more light than a 75w from an incandescent lamp. For this reason you where needing x7 less exposure time, I guess.
Please post what brightness has the image projected by enlarger, you can obtain the level in different ways:
> A lux meter, like the (Amazon) Leaton Digital Luxmeter, 0.1Lux capable, $16 (interesting to hace something like that in the darkroom)
> Use a Lux Meter app for the smartphone, it uses a sensor that's near screen for screen autobrigth feature. It gives too high readings with directonal light, but still a reference.
> Use DSLR/SLR photometer and say the f/, shutter speed and iso