Leica Filters for B&W

[mandelbrot]

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I am trying to understand which Wratten number is related to the Leica Filter #13062 yellow.

Is that Wratten #8?

What about code 13061 orange and 13063 green?

 

Thanks

M

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[Michael Geschlecht]

Hello Mandelbrot,

 

Welcome to the Forum.

 

Modern thru the lens meters in cameras will generally adjust for the appropriate compensation factor when you put a filter on a lens.

 

All you have to do is put the filter on. Don't forget the lens hood because when using filters there is more of a possibility of flare since the filter surface is more exposed to outside light sources then the front-most element of the lens is when there is no filter.

 

Having said that:

Leitz at 1 time made 4 yellow filters which were numbered:  0, 1, 2 & 3.

 

Most of today's yellow filters are either Leitz #1 which is equal to a K1 which is equal to a Wratten #6  which has a filter factor of 1.5 which means that when you are using a camera WITHOUT A BEHIND THE LENS METER you should set the separate exposure meter to give you 2/3ds of a stop of extra exposure so that: ISO 100 film would be used with a meter set to ISO 64.

 

The other alternative would most likely be a Leitz #2 which is equal to a "K2" which is equal to a Wratten #8 which has a filter factor of 2 which means that when you are using a camera WITHOUT A BEHIND THE LENS METER you should set the separate exposure meter to give you 1 stop of extra exposure so that: ISO 100 film would be used with a meter set to ISO 50.

 

What are the names or numbers written on the other 2 filters since I don't have them by model number in my reference data?

Best Regards,

 

Michael

[jplomley]

Are these Leica B&W filters any better for the MM1/MM2 spectral response than bog standard B+W or Heliopan, because if not, they are priced quite high, no?

[Michael Geschlecht]

Hello Jeffry,

 

There is a discussion about just what you asked above going on right now in the Lens Section.

 

It is called:

 

Leica Brand UV Filters..............

 

Best Regards,

 

Michael