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About that diopter thing
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Oct 22, 2014 10:48:31   #
dsmeltz Loc: Philadelphia
 
Leitz wrote:
"Diopter Adjustment Question" (There, now isn't that better? :) )
You are correct, you do want your diopter adjusted just so.


You have a problem with "thingy" questions?? Next you will refuse to answer questions about whatchmabobs!!!

:wink:

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Oct 22, 2014 11:15:39   #
Dan L Loc: Wisconsin
 
Apaflo example works for me, he is right on with his explanation!!!
I recently backed focus calibration in menu settings for a specific lens 28-300mm which improved my sharpness of my pictures for that lens. I also used that back focus setting for the general setting for all lenses, which was a mistake. I was shooting with my 300mm manual prime lens took a shot with all picture variables in the sweet spot, manual focused reviewed the picture on my computer and I had out of focus picture. So I say this that using a lens to adjust your diopter can be problematic. I also used my diopter to adjust my viewfinder sharpness with great results.
Apaflo wrote:
It helps, but not with focusing the lens on a subject!

Put a lens cap on the lens, or if you want to be really perverse just take the lens off the camera and put body cap on instead.

Use the diopter adjustment to focus the information display in the viewfinder. That is what it's for!

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Oct 22, 2014 14:46:03   #
Leitz Loc: Solms
 
It strikes me as incredible that anyone would not know the how and why of diopter adjustment - it is explained in the owner's manual for every camera that has it.

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Oct 22, 2014 14:51:55   #
amehta Loc: Boston
 
Leitz wrote:
It strikes me as incredible that anyone would not know the how and why of diopter adjustment - it is explained in the owner's manual for every camera that has it.

I think this is a very inappropriate comment. Not everyone knows everything about everything, even if they could read it in their manuals.

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Oct 22, 2014 15:08:54   #
SonnyE Loc: Communist California, USA
 
Separate question, but same subject...

What if your Diopter adjustment is near the maximum on one end?
Is there a way to center the adjustment? (Or re-center it so it is tuned to your eye)

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Oct 22, 2014 15:19:32   #
Leitz Loc: Solms
 
amehta wrote:
I think this is a very inappropriate comment. Not everyone knows everything about everything, even if they could read it in their manuals.


When one applies what they read, and see the viewfinder readouts and/or focusing screen markings go from blurred to sharply defined, does it not become apparent?

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Oct 22, 2014 15:21:19   #
amehta Loc: Boston
 
Leitz wrote:
When one applies what they read, and see the viewfinder readouts and/or focusing screen markings go from blurred to sharply defined, does it not become apparent?

And the OP understands that it helps to have it sharp for manual focusing. The question was whether it affects autofocus at all, and that is not apparent.

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Oct 22, 2014 15:38:30   #
Armadillo Loc: Ventura, CA
 
SonnyE wrote:
Separate question, but same subject...

What if your Diopter adjustment is near the maximum on one end?
Is there a way to center the adjustment? (Or re-center it so it is tuned to your eye)


SonnyE,

I can only speak about Canon EOS bodies. When the Diopter adjustment will not meet the needs of the eye (+/- 1d) the owner can purchase a replacement diopter and have it installed.

Most diopters come with a range of between +/- 3d, or you might be able to find a third party suppler who can provide an optical lens attachment on the outside of the viewfinder. Something like a replacement viewfinder eye shield with optical glass installed.

Michael g

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Oct 22, 2014 15:44:25   #
Leitz Loc: Solms
 
amehta wrote:
And the OP understands that it helps to have it sharp for manual focusing. The question was whether it affects autofocus at all, and that is not apparent.


The question had already been answered; my comment concerned those who had misconceptions about diopter adjustment.

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Oct 22, 2014 15:52:26   #
SonnyE Loc: Communist California, USA
 
Armadillo wrote:
SonnyE,

I can only speak about Canon EOS bodies. When the Diopter adjustment will not meet the needs of the eye (+/- 1d) the owner can purchase a replacement diopter and have it installed.

Most diopters come with a range of between +/- 3d, or you might be able to find a third party suppler who can provide an optical lens attachment on the outside of the viewfinder. Something like a replacement viewfinder eye shield with optical glass installed.

Michael g


Thanks Michael!
I'm just looking at that bridge before I cross it. ;)
I do suppose I can force myself to use my reading glasses.
Add-a-lens (via eyepiece) is probably easier than having the camera modified.

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Oct 22, 2014 19:23:13   #
Armadillo Loc: Ventura, CA
 
SonnyE wrote:
Thanks Michael!
I'm just looking at that bridge before I cross it. ;)
I do suppose I can force myself to use my reading glasses.
Add-a-lens (via eyepiece) is probably easier than having the camera modified.


SonnyE,

It is good to look at those bridges before crossing. If you had to change the diopter, for most cameras, it is buried inside the camera body just behind the pentaprism. The viewfinder eyepiece normally has a thin eye cup that is removable to add deeper cups to block bright light.

If it were difficult to send your camera to an authorized repair facility for replacement of the diopter I would try the adapter lens for the eyepiece.

Michael g

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Oct 22, 2014 19:28:26   #
boberic Loc: Quiet Corner, Connecticut. Ex long Islander
 
BabyNurse wrote:
Am I correct in assuming that it is important to have it set just so-so when you are doing manual focusing and not for auto focus?


I never assume that autofocus is dead on. I like to see as accurate a view as possible in either mode.

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Oct 22, 2014 21:49:56   #
SonnyE Loc: Communist California, USA
 
Armadillo wrote:
SonnyE,

It is good to look at those bridges before crossing. If you had to change the diopter, for most cameras, it is buried inside the camera body just behind the pentaprism. The viewfinder eyepiece normally has a thin eye cup that is removable to add deeper cups to block bright light.

If it were difficult to send your camera to an authorized repair facility for replacement of the diopter I would try the adapter lens for the eyepiece.

Michael g


Oh, I did change my eye piece from stock to a Hoodman glasses type. I don't wear glasses, except for over the counter readers (2.00 X).
It makes it easier for me to glue the camera to my face. ;)
It blocks the LCD view somewhat, so folks need to be aware of that.
I like it.

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Oct 22, 2014 23:45:34   #
Armadillo Loc: Ventura, CA
 
SonnyE wrote:
Oh, I did change my eye piece from stock to a Hoodman glasses type. I don't wear glasses, except for over the counter readers (2.00 X).
It makes it easier for me to glue the camera to my face. ;)
It blocks the LCD view somewhat, so folks need to be aware of that.
I like it.


Sonny,

Off topic. Reading your avatar text, me too. Northridge where the Valley Girls were born.

Michael

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Oct 23, 2014 07:36:35   #
dsmeltz Loc: Philadelphia
 
SonnyE wrote:
Oh, I did change my eye piece from stock to a Hoodman glasses type. I don't wear glasses, except for over the counter readers (2.00 X).
It makes it easier for me to glue the camera to my face. ;)
It blocks the LCD view somewhat, so folks need to be aware of that.
I like it.


I have tried Crazy Glue and Bondo with initially good results during the day. However, at night, I looked silly going out to dinner. My next attempts will be with medical skin glue and gorilla glue. I will try to keep you updated. :thumbup:

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