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  #11  
Old 15th January 2021, 07:21 PM
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skellum skellum is offline
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It's Friday, and I'll admit to being a bit tired.
However, anyone know what happens if you just dial in lots of cyan?
Does that only reduce brightness, or any implications for contrast?
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  #12  
Old 15th January 2021, 10:43 PM
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Assuming we are talking about Black and White here, Cyan is the same as a minus red filter. Black and White paper is sensitive to Blue and Green light. Red is of course the safe light and using Cyan to block Red light just makes for the equivalent of a dimmer safe light with no effect on paper exposure.
On the other hand filters are not perfect and there may be minor changes to the small degree that the Cyan filter might actually change Yellow or Magenta light.
So yes the use of Cyan makes the visualized image dimmer but with no changes in exposure or contrast.
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Old 16th January 2021, 06:12 AM
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If you yont want to buy a filter, you may simply put some sheets of frosted paper in the filter drawer. The type of paper which you use for wrap food. With times so short you may even use printer paper-
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Old 16th January 2021, 01:11 PM
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Thank you for that reasoned explanation Bill, makes sense.

I'd probably have gone and tested before asking, but darkroom currently out of commission.
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  #15  
Old 16th January 2021, 02:12 PM
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Quote:
Originally Posted by Bob View Post
What's all this with people getting too-short times? I am insanely jealous!
Dodging, short times means it is almost impossible to do it accurately or repeatedly.

Burning in can be a little less frantic - by using a smaller hole in your burning in card you effectively give yourself a smaller lens aperture.

Plus, if you make the hole in your burning in card rather soft and fluffy you increase the size of the penumbra (the soft graduated edge of the ring of light which is neither fully shaded or fully exposed) - you are less likely to leave tell-tale signs of burning in - particularly noticeable on harder grades.

Martin
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  #16  
Old 11th February 2021, 10:39 AM
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The ND gels have done the job. I'm now in a more sensible range.

I do use the dials to get contrast grades, it seems stable enough to do split grade printing without any movement caused between the grades.

I did think of swapping out the bulbs for 200W, but its only 20% less than the original 250W so I don't think it'd be enough on its own.
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