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Darin Heinz
http://www.darinheinz.com (temporary redirect) http://www.modelmayhem.com/508484
How can I increase the density of a B/W negative?
I have some T-Max negatives I'd like to mount and project as slides (even though they're negatives). Unorthodox, I know. In my first attempt, the difference between acetate clear and darkest black wasn't sufficient enough to produce a suitably contrasty image. My question, then, is whether an agent can be used post-process (such as selenium or some alien concoction) to increase the density of the black areas, or if I should reshoot using a different film that has a deeper black (such as Tech Pan, Kodalith, et cetera). Even mounting the exposed-by-direct-sunlight leader proved to be quite translucent.
Any advice would be greatly appreciated.
Thanks!
Darin
4 AnswersPhotography1 decade agoBuilding Power Adapter for Camera?
Hi everyone. I have built a special housing for an older camera which takes a 6V Lithium (K28L) battery.
Because of reasons I can't go into here, I need to hard-wire an external longer-life battery pack to the contacts in the battery compartment. Can I safely use 4 AA batteries? Or a 6V AC-DC adapter? My concerns center around the current (amperage) provided by using higher-Amp power sources.
The module I've built makes it impossible to access the battery compartment once the camera is in place, and the limited lifespan of the K28L battery is severely inadequate for the project I'm shooting with the camera.
Is there some sort of inline adapter I can build into the circuit to provide the correct current, or will the amperage draw be dictated by the camera itself?
I should have taken an electronics course, but I burned up all my elective credits on photography classes...
My next mission is to find the Excedrin.
Thanks in advance for your help!
Darin
3 AnswersEngineering1 decade ago