Ah, I failed to understand that you were using the Leica monochrome
camera. That makes a big difference.
You may be able to restore the "natural" colour sensitivity of the sensor
by using a low density red or magenta filter, such as a 23A, which is almost
directly opposite the green to yellow-green filtering tht you are experiencing.
Those are reasonably available in glass. You can get more exacting by using a
#32 gelatin.
>
>Chris: The Leica Monochrom sensor has no color filter array. Each pixel
>is just brightness. There is no color balancing, because there's no
>color info at all. There's also no RGB interpolation, so noise at higher
>ISO is very tight. The Monochrom sensor seems to be a bit more
>sensitive to green than other colors, and a green filter does very
>little. The sensor with no filter acts a bit like B&W film with a green
>or light yellow-green filter--the sky is darkened a bit compared to
>"bare" panchromatic film.
>
>The yellow filter's effect is a bit more like an orange filter with B&W
>film. An orange filter is a little stronger. Curiously, a red filter
>actually defocuses things slightly, almost like an IR filter would. I
>have confirmed all of the above with other Monochrom users.
>
>I almost always shoot Raw anyway.
>
>
>> Did you notice any differences when using the yellow filter? I've
>> found with the E-500/510/520 that you have to use RAW mode in order
>> to use Wratten filters, otherwise the camera processes the effects
>> out due to colour temperature balancing.
>
Chris
When the going gets weird, the weird turn pro
- Hunter S. Thompson
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