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  #1  
Old 6th September 2011, 09:27 PM
Rob Hale Rob Hale is offline
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Default Which is bluer ?

Hi

Do any of you have both the wratten 47b and the tri colour blue filters ? if so which is the deeper blue ?

Regards

Rob
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Old 7th September 2011, 05:01 AM
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Phil Phil is offline
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Presumably they're the same as they are both 47Bs . . I own neither.
Phil
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Old 7th September 2011, 08:20 AM
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dsallen dsallen is offline
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For Black & White I never found that much difference between the 47 or 47B. Mind you I only very rarely used them when I did landscape work generally to emphasise a more 'old world' look.

If I remember correctly, the 47B was marketed for graphic arts work and could also be used to create the 'trick' of taking 3 identical shots on B&W film using Red, Blue and Green filters mounting them in slide mounts and then using three slide projectors with the corresponding filters over them to project the 3 B&W images to create a full colour image on the screen.

Generally, the main filter that was almost permanently on my Ektar f/7.7 203mm was a Wratten 12 - the so called Minus Blue which, in my opinion gave a much better rendering of landscape than using a normal yellow, Yellow/Green, Orange or Red.

These days, working with Delta 400 in 2 bath developer, I find no need to use filters for my work. Burning in of the sky is only necessary for a particular 'look' or to compensate for the variances over the sky area that result from using a 65mm lens on 6 x 7 film.
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Old 9th September 2011, 02:07 AM
Rob Hale Rob Hale is offline
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Default The answer !!

Hi all

The answer is that Lees sell them as one and same, 47b = tricolour blue.

I live and learn.

Regards

Rob
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