berrywoodson
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When would you use and not use a multi-coated circular polarizing lens filter?
Polarizing filter
- Thread starter berrywoodson
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Use to stop MOST not all reflections, use to saturate Colours, use to darken Sky's and make clouds look superb.Use to give longer exposure to slow running water (blur it) but use a tripod.
Not to be used in dark conditions as it lets less light in and without a tripod you will blur images,Do not use if you want reflections, be careful if used on very wide lenses 10-20 etc in landscape ,as some of the sky might go very dark and some not.
Not to be used in dark conditions as it lets less light in and without a tripod you will blur images,Do not use if you want reflections, be careful if used on very wide lenses 10-20 etc in landscape ,as some of the sky might go very dark and some not.
OP
berrywoodson
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What would determine whether you use a UV rather than a polarizing lens filter?
Lensflare
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Stick a UV on and leave it on...but don't get a cheap one. Itwill protect your lens element from everything except a big hammer.
A UV/ Skylight (can't remember which is which now!) has a slight pink tinge (the other has a straw tinge) to help overcome the blue cast in shadows caused by UV (have I just answered my own question!) in bright conditions, such as high up in mountains, or when there are clear skies.
A polariser is used, exactly as you would your sunglasses, it is sunglasses for your camera. Look at the effect your glasses make - th epolariser on your lens does the same thing.
You can cut through reflections to see through water....those holiday brochure shots where the sea looks so clear because you can see every pebble on the bottom....polariser. The white clouds stand out more from the blue sky. Cars windscreens become see through, not a sheet of white reflection (you can see the driver now), shine on foliage such as the leaves of trees or grass caused by reflection is cut through and the green becomes stronger.....when though is up to you.
If you use a polariser for people, you will turn their skin red, they will look sunburned quite often.
Use it when you need to.Like any other filter - except a UV, my lenses get a new, highquality UV from the moment they come out of the box. I don't buy a lens without buying a good UV at the same time, to fit it for protection from the second the lens cap comes off.
Filters are cheap, front elements are expensive. I buy Hoya Pro 1 filters, both UV and polariser. The UV filter for my 24-70 was £58. The polariser was £149.
You can get cheaper ones, like you can get cheaper lenses - but they are crud in comparison.
A UV/ Skylight (can't remember which is which now!) has a slight pink tinge (the other has a straw tinge) to help overcome the blue cast in shadows caused by UV (have I just answered my own question!) in bright conditions, such as high up in mountains, or when there are clear skies.
A polariser is used, exactly as you would your sunglasses, it is sunglasses for your camera. Look at the effect your glasses make - th epolariser on your lens does the same thing.
You can cut through reflections to see through water....those holiday brochure shots where the sea looks so clear because you can see every pebble on the bottom....polariser. The white clouds stand out more from the blue sky. Cars windscreens become see through, not a sheet of white reflection (you can see the driver now), shine on foliage such as the leaves of trees or grass caused by reflection is cut through and the green becomes stronger.....when though is up to you.
If you use a polariser for people, you will turn their skin red, they will look sunburned quite often.
Use it when you need to.Like any other filter - except a UV, my lenses get a new, highquality UV from the moment they come out of the box. I don't buy a lens without buying a good UV at the same time, to fit it for protection from the second the lens cap comes off.
Filters are cheap, front elements are expensive. I buy Hoya Pro 1 filters, both UV and polariser. The UV filter for my 24-70 was £58. The polariser was £149.
You can get cheaper ones, like you can get cheaper lenses - but they are crud in comparison.
Does anyone else find that adding on a CPL or UV filter throws off the Auto Focus a touch. I guess it means that I should be in manual but its not 'that' bad - even reviewing it on the screen shows it sharp but get home and its blurred a touch.
Thmaga
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Im sure UV filters have no effect on digital cameras (except protecting the front element), I thought they were just something used for film?
c_robinson
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i was using a uv filter when shooting cars doing about 100mph, then hitting a big dip and jumping, had about 5 focus misses from 80 cars, pretty happy with that (20d canon 70-200 2.8) so no i wouldn't say it affects focus atall
HoppyUK
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The downside is that they cause flare. Cheap uncoated ones are bad, single coated ones are much better and multi-coated ones are quite hard to provoke in most situations, but still possible.
UV filter is clear, Skylight has slight yellow/pinkish tinge. Both are used to correct high UV light in certain cirumstances with film. All digital cameras have UV (and IR) filters over the sensor so neither filter has any effect with digital.
Only like polarising sunglasses.
Not true. A polariser good polartiser has no colour changing effect.
Good quality filters are not cheap, and certainly more expesnive than a lens hood which provides good protection and reduces flare in some situations, while never increasing it.
Sorry to be picky
A good quality filter should have no effect on focus.