Filter ???
 

Hi, I need to know how many stops of light I will lose using a B+W 091 dark
red filter? Thanks,mj

Filter ???
 

In article k.net, "Mike
Jenkins" wrote:

Hi, I need to know how many stops of light I will lose using a B+W 091 dark
red filter? Thanks,mj

It's got a filter factor of about 8 (3 stops) and admits light of about
600nm on up.

Filter ???
 

Mike Jenkins wrote:

Hi, I need to know how many stops of light I will lose using a B+W 091
dark red filter?

3 stops. I've also found that some B&W films might need even more exposure
to get printable negs using this type of filter so I'd bracket another stop
over and look at the results.
--

Stacey

Filter ???
 

Stacey wrote:

Hi, I need to know how many stops of light I will lose using a B+W 091
dark red filter?

3 stops. I've also found that some B&W films might need even more exposure
to get printable negs using this type of filter so I'd bracket another
stop
over and look at the results.

Depends on type of light too.
In artificial light, there is proportionally more red, hence a larger part
will be filtered out, which in turn means more compensation needed.
In daylight, there is ... You get the picture. ;-)

Filter ???
 

"Q.G. de Bakker" wrote in message
...
Stacey wrote:

Hi, I need to know how many stops of light I will lose using a B+W 091
dark red filter?

3 stops. I've also found that some B&W films might need even more
exposure
to get printable negs using this type of filter so I'd bracket another
stop
over and look at the results.

Depends on type of light too.
In artificial light, there is proportionally more red, hence a larger part
will be filtered out, which in turn means more compensation needed.

Oops.

In daylight, there is ... You get the picture. ;-)

David J. Littleboy
Tokyo, Japan

Filter ???
 

David J. Littleboy wrote:

Depends on type of light too.
In artificial light, there is proportionally more red, hence a larger
part
will be filtered out, which in turn means more compensation needed.

Oops.

"Oops" indeed.

Anyway, "You get the picture. ;-)"