Polarisers
Posted 03/09/2007 - 01:22
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Thanks for noting this. And thanks to Galoot for posting the link (at which is also www.dpfwiw.com/polarizer.htm#circular, which has the LP test on it that RF mentions). Very pleased to report that my K10D passes this test. So I'll stick with my linear polarisers
No simple little test is going to truly establish whether a camera is fully compatible with a linear polarizer in all metering and focusing situations. That requires extensive testing under various conditions. The camera manufacturers have done that testing and, following the discovery of occasional metering and focusing issues, now recommend the use of circular polarizers. Not a single camera or filter manufacturer today recommends the use of a linear polarizer with a modern camera.Thanks for noting this. And thanks to Galoot for posting the link (at which is also www.dpfwiw.com/polarizer.htm#circular, which has the LP test on it that RF mentions). Very pleased to report that my K10D passes this test. So I'll stick with my linear polarisers
Of course, there will always be those who feel they know better than the camera and filter manufacturers. But I suggest heeding the recommendations of the manufacturers instead, especially since there is so very little (or no) difference in cost between the two filter types today.
stewart
Posted 03/09/2007 - 11:12
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Of course, there will always be those who feel they know better than the camera and filter manufacturers. But I suggest heeding the recommendations of the manufacturers instead, especially since there is so very little (or no) difference in cost between the two filter types today.
stewart
Yes, but there is a difference in cost between buying a circular because you don't already have one, and not buying a linear because you do.ChrisA wrote:
Thanks for noting this. And thanks to Galoot for posting the link (at which is also www.dpfwiw.com/polarizer.htm#circular, which has the LP test on it that RF mentions). Very pleased to report that my K10D passes this test. So I'll stick with my linear polarisers
No simple little test is going to truly establish whether a camera is fully compatible with a linear polarizer in all metering and focusing situations. That requires extensive testing under various conditions. The camera manufacturers have done that testing and, following the discovery of occasional metering and focusing issues, now recommend the use of circular polarizers. Not a single camera or filter manufacturer today recommends the use of a linear polarizer with a modern camera.Thanks for noting this. And thanks to Galoot for posting the link (at which is also www.dpfwiw.com/polarizer.htm#circular, which has the LP test on it that RF mentions). Very pleased to report that my K10D passes this test. So I'll stick with my linear polarisers
Of course, there will always be those who feel they know better than the camera and filter manufacturers. But I suggest heeding the recommendations of the manufacturers instead, especially since there is so very little (or no) difference in cost between the two filter types today.
stewart
G
Keywords: Charming, polite, and generally agreeable.
Posted 05/09/2007 - 14:16
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my experience is that not one Pentax AF camera is actually upset by the use of a linear polariser. I have used ME-F, SFX, Z50p, MZ7, *istDL2 and K10D with success.
On a fairly unrelated point - I've also got an ME-F but have never had the AF lens (28-70 F2.8 or similar if I recall correctly) for it. Is it worth getting i.e. is it sharp and what's the AF actually like. Not that I use the ME-F much, however I still wouldn't mind one of the lenses for completeness sake.
my experience is that not one Pentax AF camera is actually upset by the use of a linear polariser. I have used ME-F, SFX, Z50p, MZ7, *istDL2 and K10D with success.
Posted 05/09/2007 - 16:26
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The lens (35-70) is big and heavy, and a real battery killer. Collectors only.Mongoose wrote:
my experience is that not one Pentax AF camera is actually upset by the use of a linear polariser. I have used ME-F, SFX, Z50p, MZ7, *istDL2 and K10D with success.
On a fairly unrelated point - I've also got an ME-F but have never had the AF lens (28-70 F2.8 or similar if I recall correctly) for it. Is it worth getting i.e. is it sharp and what's the AF actually like. Not that I use the ME-F much, however I still wouldn't mind one of the lenses for completeness sake.my experience is that not one Pentax AF camera is actually upset by the use of a linear polariser. I have used ME-F, SFX, Z50p, MZ7, *istDL2 and K10D with success.
G
Keywords: Charming, polite, and generally agreeable.
Posted 05/09/2007 - 16:32
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The lens is optically excellent, and a very useful F2.8.
But, as George says, very big and heavy.
But, as George says, very big and heavy.
Best regards, John
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7 posts
18 years
"LPs are simpler, less expensive and theoretically optically cleaner than their circular counterparts. (snip)
stewart