Support our Sponsors, they keep FADU free: AG Photographic The Imaging Warehouse Process Supplies RH Designs Second-hand Darkroom Supplies |
> Times too short on Devere 504 |
*** Click here for the FADU 2015/2014 Yearbooks *** |
|
Thread Tools | Search this Thread | Display Modes |
#11
|
||||
|
||||
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? |
#12
|
||||
|
||||
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.
__________________
www.eleventyoneportraits.com |
#13
|
||||
|
||||
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-
|
#14
|
||||
|
||||
Thank you for that reasoned explanation Bill, makes sense.
I'd probably have gone and tested before asking, but darkroom currently out of commission. |
#15
|
||||
|
||||
Quote:
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 |
#16
|
|||
|
|||
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. |
Tags |
504 devere |
Support our Sponsors, they keep FADU free: AG Photographic The Imaging Warehouse Process Supplies RH Designs Second-hand Darkroom Supplies |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Short Exposures??? | RussKelly | Darkroom | 17 | 10th March 2015 05:22 PM |
what is short-peak lamps ? | BlackMo | Equipment miscellaneous | 7 | 23rd December 2013 08:14 PM |
Long/short toe film for low key effect? | Miha | Monochrome Film | 8 | 10th December 2010 10:04 PM |
Printing from Adox film - very short exposure times | wesfraser | Monochrome printing techniques | 5 | 17th November 2010 07:56 AM |
Velvia 50 in short supply | Paul Mitchell | Colour film | 7 | 14th August 2010 09:40 AM |