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Cameras, Lenses and Accessories: Discuss Polarizing Filter Question...Hello to all Sorry I have been absent for a few weeks but PC packed up and have only just ...
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Old 05-05-2007, 15:02   #1 (permalink)
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Polarizing Filter Question

Hello to all
Sorry I have been absent for a few weeks but PC packed up and have only just managed to afford a new one but {all being well & Vista being kind} I hope to become {once again} someone to pose questions for ALL you experts to answer.
Still enough of that, my question is: I wear glasses that have reaction lenses fitted, my camera has a round polarizing filter, when I am in the sun my glasses darken so how can I know when the filter is polarized correctly? As I cannot see a thing without my glasses I cannot leave them off to find the right setting, is there an answer to this?
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Old 05-05-2007, 16:28   #2 (permalink)
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Re: Polarizing Filter Question

I could regurgitate, but Moose Peterson has an excellent primer on what Circular Polarising filters are, when they should be used and - most importantly - how to use them in a technically correct manner; see Using the Nikon Slim Polarizer for details.

As to using your camera without your glasses: your camera should have a diopter adjustment knob or slider close to the viewfinder - read the manual to find out how you adjust the diopter so you can use the viewfinder without your glasses.
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Old 05-05-2007, 17:01   #3 (permalink)
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Re: Polarizing Filter Question

Thank You Viking.
The site you directed me to was very helpfull and answered my question fully of how to use {corectly} the filter. I will check my camera manual re adjusting the diopter and see if it can help. If not I may buy a pair of plain standard clear lens glasses for taking my photos as I do not think it would be cost effective {for me} to have my strength lenses put into my viewfinder
Thank you again
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Old 05-05-2007, 18:33   #4 (permalink)
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Re: Polarizing Filter Question

thats a very imformative link VP...... question.. what do u do if you havn't got a diopter adjustment and does this work for everyone who wears glasses?
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Old 05-05-2007, 19:10   #5 (permalink)
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Re: Polarizing Filter Question

Fiona;

Most dSLR cameras have diopter adjustment dials or knobs and they can correct for most common vision variances.

Believe it or not, incorrect diopter settings are a major cause of out-of-focus images if you're shooting in manual focus - many people simply don't realise that it's a necessary step when setting up a new camera for the first time!

As to what can be done if the camera doesn't have a diopter adjustment - you can purchase diopter correcting viewfinder pieces for most dSLR's - at least I know you can for all Nikon kit.
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Old 05-05-2007, 21:58   #6 (permalink)
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Re: Polarizing Filter Question

Viking
I must admit that Adjusting the diopter was not something that I had thought would have made a lot of difference but looking back on a lot of my pictures that I have taken since I got my first Dslr I can see what you mean. I think the problem is that the size of the viewing screen on my Olympus is not large enough to spot that type of thing under some lighting conditions {Night shots ect} and it is not until I get home and view them on my PC that I have seen that a lot have been out of focus and also some what fuzzy.
I belive that the fuzzy effects are due to the way I am holding my camera {this I am trying to rectify but I could not work out why a lot of shots were some what out of focus
So once again I must thank you for your wisdom

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Old 05-05-2007, 22:39   #7 (permalink)
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Re: Polarizing Filter Question

Good to see you around again, Sparhawk
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Old 06-05-2007, 11:12   #8 (permalink)
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Re: Polarizing Filter Question

Quote:
Originally Posted by stepheno View Post
Good to see you around again, Sparhawk
Thank You Stepheno
I have missed the board more than you will ever know
but it is GREAT TO BE BACK on the BEST PHOTOGRAPHY BOARD
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Old 07-05-2007, 14:34   #9 (permalink)
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Re: Polarizing Filter Question

As far as I remember, when you view the image through a pentraprism on an SLR you are focussing at around 10 inches not infinity. For this reason many people who normally need glasses do not need them for using the viewfinder. It is certainly worth trying without glasses and adjustimg the diopter setting. If you have some unusual eye problems, it may be worth talking to your optitian who maybe able to come up with a better solution.
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