photo developing too fast (8sec..)

[webestang64]

Enlarger manual if needed.

http://www.jollinger.com/photo/cam-coll/manuals/enlargers/durst/Durst_M605.pdf

 

[lieven van meulder]

You printing 35mm negs ? with a 50mm lens and single condenser ?

Don't know what you mean by that.. single condenser?

 

[480sparky]

My enlarger is a Durst M605 .
the enlarger has a set of 3 color filters: Cyan, Magenta and Yellow.

Dial in equal amounts of C, M and Y. That will effectively be an ND filter.

 

[lieven van meulder]

Hi Sparky,

Thank you sooo much . Didn't know that you could make your own ND filter like that...

Will try it tomorrow...

 

[ac12]

I agree with Sparky about the CMY filters to create an ND filter.

I have a Durst M600, and like you the exposure time was way too short, with the standard 150w bulb and the lens closed down all the way. I replaced the 150w bulb with a lower wattage 75w bulb, to reduce the light. But the light was not reduced enough, I still had relatively fast exposures of about 10 seconds. I really needed a 30w bulb, to get to a 20+ second exposure. That enlarger was BRIGHT.
Next step would have been to screw a 2-stop ND filter onto the lens, to get the light level down further.

 

[compur]

Enlarger brightness can be reduced with a variac or auto transformer.

 

[ac12]

Enlarger brightness can be reduced with a variac or auto transformer.

Won't that also change the color temp of the bulb.

 

[compur]

Enlarger brightness can be reduced with a variac or auto transformer.

Won't that also change the color temp of the bulb.

Yes, it can and you may have to compensate via filtration when using VC papers.