Never bothered before but...

[Ambermile]

... just loaded up the Fuji 120 with PanF and also dropped a Hoya Yellow(Y(K2)) filter on the pointy bit. Metering is through the viewfinder though so will miss the filter... do I need to allow for it with the ISO setting maybe or just forget it?

... and what about polarisers? I mean... how?

 

[joxby]

I'm allowing 1 stop for a red un

*edit*polarisers 1 1/2 stops...

 

[Ambermile]

Hmm, so maybe 1/2 then - but polarisers I mean *how* do you use one on a rangefinder - guess? Take it off, have a look then put it back on again?

 

[joxby]

Take it off, have a look then put it back on again?

That's what I do with the Mam 6, it can be tricky because you have to screw the thing on after you've decided where you want it..

 

[acs]

These are for Nikon filters:

              Daylight        Tungsten
Light   Y 44  1.5 (1/2 stop)  1.0
Medium  Y 48  1.7 (2/3)       1.2 (1/3)  K2
Deep    Y 52  2.0 (1)         1.4 (1/2)

 

[acs]

http://www.robertwhite.co.uk/products.asp?PT_ID=284

 

[TheBigYin]

With my polarising filter, either by happy accident, or by design, if the letters CPL are at the top (12 o'clock position) the polarising effect is at it's strongest, 90degrees left or right (3 or 9) it's at it's weakest. So - I just take a squint though the pola-filter before screwing it in, decide if I want 12,1,2,3 'clock and put the filter in place.

As far as the filters go, just put them on the (whispers) digital camera, and see how many stops you lose, and adjust exposure accordingly - just checked mine (fleabay specials!) and red came out 1 1/3 stop, orange 2/3 stops and yellow 1/3 stop.

 

[Ambermile]

OK, so the consensus is 1/2 stop tops for the yellow then?

CPL, suck it first and pray?

As far as the filters go, just put them on the (whispers) digital camera

Pah... never even thought of doing that :bonk:

 

[Mohain]

Check if your polariser has a white dot or mark on the rim. If it does, point this to the sun. That will be the maximum polarised angle of the filter.

 

[s162216]

Based on the general filter factors heres what I've calculated/found each to be:

Yellow (K2): 1 stop
Orange: 1 2/3 stops
Red: 3 stops
Very Deep Red/IR 720nm 4 stops
Yellow Green: 2 stops
Green: 2 2/3

If you buy a new filter then generally you can find out what the filter factor is for it anyway from the manuafacturer usually although sometimes like with Hoya (who provide no information) this can be difficult.

I personally wouldn't trust TTL meter readings from an orange or red filter unless you've got a Cds meter which are more sensitive to red light. Even then its best to subtract perhaps half a stop as well.