using a polariser with the 40mm CFE

[jeryharwood]

Hi, there; I have just acquired a mint 93mm polariser for my 40CFE lens; my question is this; how much extra exposure would I need to give when using the filter at its Max ? Ie in bright sun, with reflections off water, for example. I would assume that two to three stops extra, but what do others think ? thank you in advance.

 

[terrydent]

I have found that you lose two stops with this filter.

 

[polypal]

It varies.

Two stops is a bit pessimistic although it can happen that the loss is as much as that.
It varies according to the adjustment of the polarizer and the sort of light present.
Also the reflecting subject has influence.
Anything between 1,5 and 2,3 stops is possible making 2 stops a rule of thumb.

 

[wbulte]

Ttl!

With polafilters nothing beats a TTL meter. There are just too many factors influencing the light loss due to the filter to come up with a generic answer.

Wilko

 

[vandevantersh]

With polafilters nothing beats a TTL meter. There are just too many factors influencing the light loss due to the filter to come up with a generic answer.

Wilko

The polarizing filter convinced me to buy a PME-45.

Steve

 

[polypal]

The polarizing filter convinced me to buy a PME-45.

Steve

Good thinking!

 

[blowupster]

The polarizing filter convinced me to buy a PME-45.

Steve

Or to buy a digital back to use as a polaroid-test !