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Contacting printing without an enlarger

I know a number of people have successfully done contact printing in a darkroom without an enlarger. For example, that was the norm in the early days of photography. Some folks recommend using some kind of diffusion with the light source to reduce it's intensity. This does make sense because using a bare bulb may only allow extremely brief exposure times of perhaps a second or two. However, if you used multigrade filters in conjunction with a bare bulb (like a Grade 2 filter for example), would this allow decently long exposure times like 3 or 4 seconds?

Regarding paper types, a number of people recommend using graded papers so that any light source can be used with them for contacting printing minus an enlarger. Supposedly, multigrade papers can only be used with very specific light sources. However, someone on another forum reported that he got good results contact printing with Ilford multigrade paper and Phillips 5 watt and 7.5 watt bulbs held about 4 feet above the paper.

Edit: would a moderator be able to change the title of this thread to "Contact printing without an enlarger"? The current typo may possibly cause some confusion.
 
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JoelM

Active member
When I was Pt/Pd printing, I used a UV light source which consisted of 8, I think, bare fluorescent bulbs. I've known people to use a mercury vapor bare bulb as well as the great big point light source in the sky. I don't think that diffusing the light source matters unless it isn't covering your contact frame. A diffused light source gives the advantage of time, thus allowing you to do some dodging/burning of your negative.

HTH,

Joel
 

arri

Active member
In the past silver chloride papers were available from all makers, now only Adox has one in production, is has the old Agfa name for this paper, "Lupex"

Silver chloride is much slower than the standard silver bromide papers, it needs 7x more time to exposure and this gives much more safety during the exposure process.
The other point is that the silver chlorid paper has a finer grain.
It is made only in grade 3 but it is possible via pre exposure to reduce the grade to 2 or 1.

But is has a disadvantage, it is very expensive, a 8x10" sheet costs nearly 2 Euros in Germany and I don´t know if it is available in the States.
 

Shashin

Well-known member
A regular bulb or halogen lamp will work--that is what most enlargers use. You don't need a source high in UV unless you are doing something like platinum printing, but then you can use sunlight.

I would simply put your bulb on an enlarger timer to control exposure. You can then use fractions of a second. Manually using a light switch is not great.

If you are contact printing for final prints, then the distance from the light source will be important, not only for even illumination but also sharpness. When building a contact printer for lith film for a single bulb source, we found around 10-12 feet to be a minimum distance. A large diffused source is not ideal.
 
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