David William White Find the minimum time for each film type to just get to maximum black through the film rebate (edges) for a mid-aperture exposure via test strip. Record aperture said:Thanks! I wasn't aware that I should use a filter, I do have them so I will try it out. Also, did I understand correctly, that each film type has a recommended exposure time? Or did you mean each paper type?
With most papers, you can use a red safelight or red filter over your enlarger lens so that you can see what you're doing when you line the film up. I do that to get the framing just right, if I want clean white borders.
Yes, I always do emulsion-to-emulsion, and for bendy negs I weigh them down with a thick piece of clean glass. Everything needs to be dust free, of course.
Rather than pushing and pulling negs in and out of sleeves for successive prints, I move the neg onto fresh paper right after each exposure. Once I get things about right then I just go quickly from one print to the next.
Oh and having your enlarger at f/2.8 probably isn't such a good idea, why not stop it down quite a lot, say f/16 or more, to produce a more collimated beam. That will also improve sharpness. (And, in my experience, a contact print done through a protective sleeve shouldn't be terribly unsharp if you do have a well-collimated light source.)
Do take the time to track down any light leaks that might give you some non-collimated exposure.
Jon is this a particular type of sleeve that is considered better for this kind of thing? I specifically bought these clear sleeves so that I could use them for printing. I also went with the Patterson printer because it really keeps them secure against the glass. Ok, so from all the responses. I assume that I need to try something different with the negs (with the exception of the f-stop) and it doesn't have to do with the processing. I had initially thought that I had overcooked it or something but it sounds like 10 seconds is an alright start.I always do the proof sheets with the negs in the printfile sleeves and have no problems with sharpness there. Check that your glass is providing good pressure on the negs/paper.
Jon
Thanks! I wasn't aware that I should use a filter, I do have them so I will try it out. Also, did I understand correctly, that each film type has a recommended exposure time? Or did you mean each paper type?
Is it possible the negatives are overexposed or on the dense side? I find the Printfile sleeves fine for contacting as long as the negs are a 'normal' density. However, if the negs are on the heavy side, they seem to look a bit difused when contatcted through the bag, especially 35mm which is on a thicker base. Also, the edge of the frame and the rebate tends to bleed a bit. If so, I will usually re-contact those ones out the sleeves.
Is it possible the negatives are overexposed or on the dense side? I find the Printfile sleeves fine for contacting as long as the negs are a 'normal' density. However, if the negs are on the heavy side, they seem to look a bit difused when contatcted through the bag, especially 35mm which is on a thicker base. Also, the edge of the frame and the rebate tends to bleed a bit. If so, I will usually re-contact those ones out the sleeves.
Are they in 'contact', ie. do you put a piece of glass over top?
That is a most interesting and excellent idea. I will most definitely do that once I have figured out how my current problem. The other difficulty is that the Fomaspeed states that it reduces exposure and development times by 50%. Well that doesn't do me much good because I don't have a basic exposure time from which to work. I tried 10 sec. then 15 sec. and then 20 sec. all with 60 sec. in the tray. Is there a 'standard' developing time somewhere out there? I couldn't find anything on the Foma site...Yes, in addition to the film, different paperstocks can have different exposure times for contact and projection prints, and further beware that different papers respond differently to contrast filtration. Most of my printing is done with Ilford contrast filters on Ilford MG paper.
Anyway, if you do the contact prints using a #2 filter, then you get some idea what filter you need for your projection print (more or less contrast), so it's helpful. Also, if contact prints are excessively flat, then maybe increase your film development time. If too dark, maybe increase your film exposure time (in-camera). Contact prints can be very helpful from one end to the other.
To see what different filmstocks do, take a sections of unexposed film (developed & fixed so you see "base fog") of different types, lay them up for contact printing, then do a step test (t, 2t, 3t, 4t,...) and you'll notice that some filmstocks get to maximum black faster than others.
But you are right, different papers will respond differently and a survey of those you use would prove helpful.
I know this sounds like a lot of dicking around for just contact prints, but this sort of craftwork pays back enormously when it comes to acheiving repeatability and reliability in exposure, film development, and of course, the whole point, the final printing.
I'm in the middle of this, too.
Is there any chance that you have the paper in upside down (i.e. with emulsion side down, rather than up)? The emulsion side is a bit more "shiny" when observed (briefly) under safelight, at a slight angle.
Alternatively, is there a problem with your Patterson proof printer? Does it have foam, and is it in good enough shape to ensure that when the glass is lowered, there is good firm contact between the negatives (in sleeves) and the emulsion side of the paper?
You should standardise on one developing time that is near the mid range for the developer and paper you use, and then adjust the f/stop and time of exposure to get the results you want. I usually try for something like a 10 second exposure time. It seems to me that if you are having to use f/2.8 then something isn't normal.
Have fun!
Matt
PS - I usually contact print through the sleeves too. When you say the contact prints are really blurry, are you saying that details like the frame numbers are blurry, or is it just the image details themselves?
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