Well, I learned about polarizers as being a means to cancel reflections, either specular ones or image forming ones as in window panes.
I am even quite sure that the sky darkening is not even mentioned in any of my older textbooks at all.
Thus I am surprised about mainly relating a polarizer to sky darkening or colour saturating, a stand that seems the major one here/today.
Such statement is too generic. A polarizer only can influence contrast if there is polarisation at the lighting or at reflections. Also whether it adds or reduces contrast is dependand on situation and what the way you define the term contrast.Polarizing filters add contrast to shading photos and do likewise with high contrast pictures.
OK, so...... or and.....
Polarizers are absolutely mandatory in a serious photographers kit.
People who say otherwise are:
A. Unadventurous/not curious enough. In the same category as people who use the learned, “available light photographer” badge as a way to glorify their fear of flash and modifiers.
B. Missing out on some great effects and opportunities.
Being able to cut through water and window reflections is reason enough in itself to use one.
Polarizing the sky is the way to get the last stops down to dark skyes with the IR emulsions available today.
Hmmm, lets see. TLR: bayonet the polarizer on the viewing lens and adjust as desired. Then remove and bayonet onto the taking lens with the same orientation.. Done.Polarizers are a pain to use properly with a TLR or rangefinder camera. And nobody seems to mention the variable filter factor.
Still a pain--you should be careful to maintain the orientation of the polarizer while you move it around from eye to meter to lens.Hmmm, lets see. TLR: bayonet the polarizer on the viewing lens and adjust as desired. Then remove and bayonet onto the taking lens with the same orientation.. Done.
Rangefinder: I agree that it can be clumsy. But with Leica's 39mm lenses, the 13352 swing out polarizer makes it easy.
Exposure: you hold the polarizer in front of your light meter.
Polarizers are a pain to use properly with a TLR or rangefinder camera. And nobody seems to mention the variable filter factor.
I often will check which way i want the polarizer to be looking through it with my eye, not the camera. There's a white line in one spot on the ring of my polarizer. So I just note which way it's facing to orient it the same way when I mount it it on my lens.Still a pain--you should be careful to maintain the orientation of the polarizer while you move it around from eye to meter to lens.
I was just making the point that using a polarizing filter on such cameras is not necessarily straightforward. And changing the rotation a bit can make a big difference in the effect. But by all means, use the filter, I'm not knocking that.Oh, give up. You are grasping a straws to bash the use of polarizer filters on TLR or rangefinder cameras. Where are you going with this? Lets go to the basic exposure. The filter factor for most polarizers is about 1.2 to 1.5 stops (some brands might be a bit different). You hold the filter and dial in the degree of darkening that you like. Then you move it down to your hand-held meter and do your best to maintain the same orientation. OK, so maybe you rotated it a bit. How much? 1/8 stop? 1/4 stop? That will really make a great difference in your film? Millions of photographers used polarizers on all sorts of cameras. They managed somehow.
I rarely use anything but a mild yellow filter. It seems to improve more natural rendering. If dark skies and popping clouds are important than an orange filter will do. To me a red filter overdoes that effect.Sometimes when capturing a desirable scene, and, it's at or near 90 degrees to the sun, I'll polarize. Sometimes, though not always, it can enhance - skies darker/clouds pop out, improves building exteriors on glass/metallic buildings to name a couple. Red might enhance the sky portion - but ruins the rest.
But I find most don't, thinking polarizers are mainly for color, or they can burn-in or dodge for enhancements.
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