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General photography questions and answers: Discuss diopter...Think me eyesight starting to play funny tricks so the question is how do you know what strength of diopter ...
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Old 02-07-2013, 23:34   #1 (permalink)
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diopter

Think me eyesight starting to play funny tricks so the question is how do you know what strength of diopter to pick to put on your camera
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Old 02-07-2013, 23:41   #2 (permalink)
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Re: diopter

Do you means other than the built-in diopter adjustment? You can get extra lenses that slot into the viewfinder cup, maybe your optician can advise.

Nikon do an eyepiece that gives a slight magnification, but also reduces the viewfinder area by a couple of percent. This can make it difficult to see the info at the bottom of the viewfinder.
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Old 02-07-2013, 23:51   #3 (permalink)
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Re: diopter

The opticians the guy to see then for advice, just i seen Nikon done different levels, have noticed that things are a wee bit harder to see recently when they are close-up & thought this might effect what i see in the viewfinder to
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Old 03-07-2013, 00:03   #4 (permalink)
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Re: diopter

I don't think that the diopter lenses will affect the viewfinder - only the magnifying ones.

I've got a magnifying one that you can have if you want it. Just have to check that it will fit your eye cup. It fitted my D70s and I think it fitted my D300, so it ought to fit your D90.
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Old 03-07-2013, 08:14   #5 (permalink)
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Re: diopter

Maybe the other option is to get specticles, the diopter adjuster on the camera will then be back in the adjustment range, I have got a coating on my glasses to prevent scratching, it has lasted 5 years so far but I will need some new ones soon as the coating is wearing and they are harder to "de smear" now.
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Old 04-07-2013, 09:53   #6 (permalink)
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Re: diopter

Thanx guys, thats very good of you Graham thank-you but i have a magnifier on the D90 M-21 or something like that, it should be more than good enough then, just have to keep an eye on the problem then & hope it do-sent/shouldn't get any worse as its only slight at the minute
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Old 04-07-2013, 10:35   #7 (permalink)
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Re: diopter

Hi Shane,, because I have always enjoyed macro, "no matter how bad I do", I keep searching for things to do and help. I like my little spade pod, I can get down on my knees to shoot close to the ground. The problem, I needed a 90 degree viewer to attach to my eyepiece. When I finally got one and put it on, I noticed that it had a 2X and 1X adjustment. How well it fits is important, but it works and I even can just walk around with it and use it that way too. Also,,sometimes most department stores, "don't know if they have a different name in your homeland", you can find reading glasses that magnify to higher levels to help you read or just see better. You don't even need to see the eye doctor if thats all you need. Doesn't hurt to take a look when your at the nick & knack store, plus they're cheap. Good luck, take care of your ol' bones.
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Old 04-07-2013, 11:57   #8 (permalink)
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Re: diopter

Quote:
Originally Posted by simpbow View Post
M-21 or something like that
Yep - that's the one whatever it's called. I'm sure that the magnification is very low - about 1.1x.

Just a thought. Have you got the diopter set correctly?
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Old 04-07-2013, 23:29   #9 (permalink)
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Re: diopter

Hi guys, yes the mag is low on it Graham but still does enough i think, just about, have the diopter set on camera fine but when i noticed the problem more was with the 11-16 as the detail & everything is so fine, thanx for tip Boofers
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Old 05-07-2013, 08:37   #10 (permalink)
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Re: diopter

I think the numbers on the dioptre on the camera, relate to your prescription. ie +1 or -1 etc. I've never adjusted mine, as I use my glasses all the time when looking through the viewfinder, but I'm now finding that I have to take my glasses off to review the shots or use live view as my close vision is better without glasses, I can then use the zoom function for close accurate focus. It just means my glasses are on and off all the time!
The perils of age!
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Old 05-07-2013, 12:03   #11 (permalink)
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Re: diopter

Yep the perils of age indeed. I can use mine with or without glasses with the adjustment but prefer to use it without glasses
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Old 05-07-2013, 17:55   #12 (permalink)
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Re: diopter

The difficulty with the D90 is that Nikon chose to take it to only +2 dioptre. The D300s goes to +3, D800 goes to +3 in the book but does not seem to be as much as the +3 on the D300s. It is a pity that Nikon choose to mess around with the viewfinder, offering a lot of negative and only little positive correction. On the other hand if you have a +4 dioptre correction in the viewfinder you should be able to adjust the camera to -4 dioptre for anyone that uses it without needing correction (in theory).
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