Yashica GSN and Filter Factors

I've never made any adjustments however I've never done an A/B test to determine the outcome of "with and without filter". I usually bracket by f stop and find I have at least one image I can work with.

If you decide to do a test to find out, I'd be interested to see your results back in this thread.
 
You're supposed to change the ASA. With the GSN, the meter is not "behind the filter" on the front of the lens barrel like most other RFs. It's on the camera body so the meter doesn't "know" if you're using a filter or not. You have to adjust manually. The "number" of the filter tells you what to divide the ASA by. So if it's a yellow Y2 filter (Yellow, filter factor 2) and you're using 400 speed film, set the ASA to 200 (400/2) manually on the GSN when using the filter.

If you're using a RF with the meter on the front of the lens, behind the filter because the light is metered after it passes through the filter, there's no need to manually adjust it. Just set the camera to the box film speed.
 
HM...what about polarizing filters...I am using it in minolta slr, with ttl meter, and as I rotate the filter, I can see the effect and ttl metering takes care of exposure which also changes with rotation. The same 55mm polarizer fits on GSN perfectly, guess I can rotate it in front of my eye to see the correct angle, but how to determine the exposure? Can't think of nothing else but to bracket with asa dial by 1-2 stops and hope it will be OK... Any suggestions?
BTW, that goes for any, RF, but I have never used polarizers before, I just couldn't find any in 40,5mm for FSU lenses, not to mention the rollei mount..
 
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for the GSN: make some test shots.
for the Rollei: sell it, get yourself a Minolta Aotocord or a late Rolleicord
and the Minolta polarizer! Baj.1, full visual control! Spend the rest for film...
 
for the GSN...sure, I just thought that someone allready tested similar things.

for the rolleiflex..hm.:bang:.guess the reasonable thing would be to sell it, together with Leica , two elmars and a summicron, and buy a Eos 5D with a splendid 50mm f1.4 lens.
And compensate a warehouse full of film with a few SD cards.
But who listens to reason? :D:D:D
 
Moretto...

Moretto...

you can use a linear polarizer and you won't need to rotate the filter. The meter on the body is the one thing I really don't like about the GSN, but the lens is worth the aggravation.

Mary in Florida
 
Until now I believed LIN and CIRC kinds of polarizer both rotate. I have used polarizer on RF but now I think it's gymmick. For shots of those "car with shiny windshield" or "rose bud with water drops" SLRs are better suited. One use of polarizer on Electro could be on very bright day when 1/500th is too slow, instead of ND filter.
 
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