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#1
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Polarizer filter
Hello,
I'm a newby to photography and trying to buy some accessories to my camera. I have a Minolta Dimage S414 digital camera. Right now, I'm about to buy some polarizer filters. However, I can't decide: linear or circular? Somewhere I read that linear polarizers are only for older cameras, with digital you should use circular. In a digital camera how-to book I found that circular polarizer is a bad choice for a digital camera. Which is true?? Do you have any suggestions? Any suggestions for brands? Right now I've found Tiffen and Hoya in the price range I'm planning to spend... Thanks for any ideas, Zsolt |
#2
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Polarizer filter
On Sun, 21 Mar 2004 22:09:43 +0000, Zsolt wrote:
Hello, I'm a newby to photography and trying to buy some accessories to my camera. I have a Minolta Dimage S414 digital camera. Right now, I'm about to buy some polarizer filters. However, I can't decide: linear or circular? Somewhere I read that linear polarizers are only for older cameras, with digital you should use circular. In a digital camera how-to book I found that circular polarizer is a bad choice for a digital camera. Which is true?? Do you have any suggestions? Any suggestions for brands? Right now I've found Tiffen and Hoya in the price range I'm planning to spend... Thanks for any ideas, Zsolt Generally speaking autofocus cameras require circular polarizers. HTH Jerry |
#3
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Polarizer filter
Zsolt wrote in :
Hello, I'm a newby to photography and trying to buy some accessories to my camera. I have a Minolta Dimage S414 digital camera. Right now, I'm about to buy some polarizer filters. However, I can't decide: linear or circular? Somewhere I read that linear polarizers are only for older cameras, with digital you should use circular. In a digital camera how-to book I found that circular polarizer is a bad choice for a digital camera. Which is true?? Do you have any suggestions? Any suggestions for brands? Right now I've found Tiffen and Hoya in the price range I'm planning to spend... Thanks for any ideas, The one to use is the one the manufacturer of your model recommends. Check the manual. I have never heard of any camera that could *not* use a circ pol when it *could* use a lin pol - usually it's the other way around. Any camera using a beam-splitter or a half-silvered (semi-pass) mirror is sensitive to linear polarized light, and this applies to countless cameras on the market today. Many use them for auto-focusing or exposure metering. A circ pol, however, essentially passes non-polarized light, so there is no interference with AF or metering. So it doesn't seem to make any sense that a camera wouldn't be able to use this, if it can use a linear. I suspect that the how-to book had it backwards - this is certainly the first I've heard of it (which doesn't make it impossible). I would definitely look for this info to be repeated anywhere else. And you can look up circular polarizers numerous places on the web for a full understanding of how they work. Good luck! - Al. -- To reply, insert dash in address to match domain below Online photo gallery at www.wading-in.net |
#4
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Polarizer filter
Al Denelsbeck wrote:
The one to use is the one the manufacturer of your model recommends. Check the manual. The manual doesn't suggest anything. A circ pol, however, essentially passes non-polarized light, so there is no interference with AF or metering. So it doesn't seem to make any sense that a camera wouldn't be able to use this, if it can use a linear. I suspect that the how-to book had it backwards - this is certainly the first I've heard of it (which doesn't make it impossible). I would definitely look for this info to be repeated anywhere else. And you can look up circular polarizers numerous places on the web for a full understanding of how they work. The author was saying that circular polarizers create interference with the mosaic filter of the CCD in the digital cameras, which later cannot be removed from the pictures. But as you suggest, it really can be the other way around. Thanks, for the help: Zsolt |
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