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Published by Les McLean
17th December 2008 |
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#2
By
Trevor Crone
on
17th December 2008, 10:46 AM
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Thanks Les, great article. I really must get one of Richard's paper flashers. Removing the negative carrier+negative each time can be a bit of a pain.
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#3
By
B&W Neil
on
17th December 2008, 11:00 AM
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Quote:
Neil. |
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#4
By
Trevor Crone
on
17th December 2008, 11:49 AM
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Cheers Neil.
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#5
By
lee l
on
17th December 2008, 02:01 PM
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Quote:
Not to take anything away from the RH Designs product (I love my Stop Clock Pro), but until you get one of their flashers you can do flashing without removing the negative and carrier. I used to do about 500 custom B&W prints weekly in a small lab, and found it necessary to use flashing to get my best work out. I used a piece of 1/16 inch thick translucent milky/opal perspex over the enlarging lens at a percentage of the full exposure. In my case that worked out to about 20% of the overall exposure on a very consistent basis. I had to work fast, so had no time for a lot of fine tuning, but this approach allowed me to get the work out at higher quality and in good time. No doubt an enlarging meter would have helped for fine tuning the flash, but I had none to hand. The RH Designs Flasher will no doubt be easier to calibrate. Lee |
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#6
By
Trevor Crone
on
17th December 2008, 03:04 PM
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Thanks for that Lee. Although I don't do a lot of flashing I've been meaning to get myself a piece of opaque perspex/glass. It would be useful to give it a go.
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#7
By
Argentum
on
17th December 2008, 03:38 PM
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My durst modular 70, like a lot of enlargers, has a red filter which you can swing under the lens for use whilst composing on the baseboard. It also has a second filter on that stalk which is a diffusion filter which is for flashing. i.e. these diffusion filters can be obtained to fit at least durst enlargers.
My Durst L1200 only has the red filter so I bought some diffusion material and made a little square filter holder for it which I just hold under the lens for flashing on that enlarger. If I ever come across a red filter holder for sale of the correct size for my L1200, then I'll snaffle that and fit it with diffusion material. The diffusion material I use is "Leelux 400" and I use two layers of it in my home made flashing filter. That gives around 10% print time for a paper flash. Leelux 400 can be obtained from any supplier of Lee filters in sheets. As mentioned White Opal perspex works too. |
#8
By
Trevor Crone
on
18th December 2008, 09:58 AM
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Just ordered a sheet of white opal perspex, A4 x 3mm thick on Ebay, just under £3 including postage. Will either hold it under the lens with the negative in place or attach a piece to the enlargers swing filter post. Thanks guys for all the suggestions.
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#9
By
Dave miller
on
18th December 2008, 11:04 AM
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Quote:
The effect can best be seen when exposing pen lines. If they are exposed though a diffuser with the negative in place, one gets a graduation of tone (which may range to black) instead of a pure even black that is obtained using a pure white light. |
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