B+W Black and white FILM/DIGITAL Hi contrast wit RED filter/CircPOL

[Canon_Shooter]

I'm trying to turn the Blue sky black with minimal Vignetting What filter combo im thinking B+W CirPol and a 89b red filter(best???) but worried both are F-PRO or Just slim and order of operations, as in circular polarizer then the red filter then the lens (24 mk II 77mm).

thanks for the info.

 

[Quasimodo]

I have no insights to provide here, but would like to hear what people have to say. I just ordered a Hoya 25a red filter yesterday for my Canon A-1 camera. That was not to blacken the sky, but rather to create more contrast/punch in the skies

 

[Canon_Shooter]

same im interested in your results , can get quite dark with a red and a circPol set to the right angle

 

[Quasimodo]

same im interested in your results , can get quite dark with a red and a circPol set to the right angle

I found a website yesterday with a matrix with filter factors, fstop increases, and what they do, that I found informative. fineart-photography.com/bwfilter.html

According to this, the 25a increases by three stops, so I guess that I will try it with the AE first, to be certain that I get the right exposure

 

[DominoDude]

same im interested in your results , can get quite dark with a red and a circPol set to the right angle

I found a website yesterday with a matrix with filter factors, fstop increases, and what they do, that I found informative. fineart-photography.com/bwfilter.html

According to this, the 25a increases by three stops, so I guess that I will try it with the AE first, to be certain that I get the right exposure

Not shooting film anymore, but that link seem to contain useful info.
I once had a pamphlet from Kodak that contained information and listings on just about any and all filters and their effects. (Haven't seen mine for the last 15 or so years, so it must have been lost during moving.)
If any of you can find that pamphlet there will be tons of information - it have to exist somewhere in either paper form or electronically.

 

[quod]

Red filters should create the effect you want. That said, I took the attached shot in Death Valley with only a circular polarizer. To create this effect, I processed it in Adobe RAW, dropping down the blue color slider in HSL/Greyscale module down to zero, and convert to black and white on the same module. I opened it in Photoshop, created a layer mask, refined that mask, and then burned sky with a huge brush (e.g., 2,000 pixels) for even distribution. If you'd like more details, PM me.

By the way, a good resource on filters is Ansel Adams' book, The Camera. Many public libraries have it in their collections.

 

[Canon_Shooter]

trick is wanting the clouds to stand out and nor be darkened by brush stroke and the "in camera" look i produce.


but its a 25a by the Kodak 'scale' or naming convention.