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Hasselblad B60 filters

allard2

New Member
On the Hasselblad site there are only Pola, UV-Haze and Softar I-III filters.

But I found there are also cb 12 & cr 3 filters. What kind of filters are they?
And are there yellow filters as well?
 

qnu

Banned
CB and CR filters are "light balancing" and "conversion filters" filters, the ones you use to corect for diferences in colour temperature.

Hasselblad they no longer sell filters, except the types you mentioned first) did use the decamired system to name their filters.

Decamired stands for DEca (i.e. x10) MIcro (i.e. 1/1,000,000th) REciprocal (i.e. 1/x) Degree.
To convert from degrees Kelvin (the "degree" in mired) to decamired directly (skipping the deca and reciprocal bits) you use the formula:
DM = 100,000 / degree Kelvin

To go the other way, just go the other way. ;-)

A CB 12 filter is a blue (B) filter providing a shift in colour temperature of 12 decamired.
It is equivalent to the Kodak Wratten 80B, and is used when daylight (balanced film is used with incandescent light sources producing light of about 3400 Kelvin.

A CR 3 is a red (R) filter shifting colour temperature 3 decamired.
It is a correction filter used to correct for the blue cast you get in shade outdoors, under a blue sky. Its Kodak Wratten equivalent is 81B.


Hasselblad did sell a yellow filter, yes. A yellow filter intended to be used as a contrast filter in B&W photography.
It was called (you'll never guess... ;-)) "Y", for Yellow.
They also sold "R" (red), "YG" (yellow-green), "O" (orange) and "G" (green) filters.

Today, you have to get new B60 filters directly from filter manufacturers like B+W or Heliopan.
Or see what you can find used, or on That Auction Site.
 

qnu

Banned
And excuse the incorrect spelling of "correct" The "Hasselblad they" bit, the missing "(", etc.
One day, i keep promising, i know..., one day i'll check before posting ;-)
 

hattu

New Member
Hello,

I have a B+W KR6 filter (equivalent to 81EF).
I would like to know if I can use it for B&W photography and what would be its effect.
Thanks.
 

qnu

Banned
You can use any filer for B&W as well, but most filters are not "strong" enough to have a noticeable effect.

The KR6 is reddish, so it will darken blue a bit.
But not nearly as much as a Yellow (Wratten 8) Orange (Wratten 16 or 22) or even Red (Wratten 25 or 29) filter.
 

hattu

New Member
Thanks a lot Qnu.
It is exactly what I wanted to know (comparison between that filter and B&W filters).
 
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