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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 04 Dec 2005 (Sunday) 03:24
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350D/Rebel XT Eyepiece Dioptric Adjustment

 
Glyno
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Location: Chester, UK
     
Dec 04, 2005 03:24 |  #1

I've been adjusting the Diotric Adjustment for the viewfinder on my 350D and am struggling to get the focus points absolutely sharp.

According to the manual (page 42): Turn the knob left or right until the AF points in the viewfinder look sharp.
And... If the camera's dioptric adjustment still cannot provide a sharp viewfinder image, using Dioptric Adjustment Lens E (10 types, optional) is recommended.

Now, whilst I don't claim to have 100% perfect eyesight I do think my eyesight is better than average and would expect to get the focus points sharp in the viewfinder.
I'd appreciate any other users' feedback, many thanks,
Glyn.



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R ­ Hardman
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Dec 04, 2005 11:13 |  #2

I got mine to be sharp just a tad of full left.


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Mitcon
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Dec 04, 2005 13:31 |  #3

I adjust mine with a lens cap on, try adjusting it until the readout (green numbers and such) in the viewfinder is sharp.


Cheers Wayne :D
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Glyno
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Dec 04, 2005 14:22 |  #4

Thanks guys, I've tried using the method suggested and the correct setting seems to be at the extreme left - maybe my eyesight isn't as good as I thought!



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visionboy
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Dec 04, 2005 22:12 as a reply to  @ Glyno's post |  #5

Glyno wrote:
Thanks guys, I've tried using the method suggested and the correct setting seems to be at the extreme left - maybe my eyesight isn't as good as I thought!

If its best at the extreme left, then most likely you're an undercorrected myope. That means you're nearsightedness, and your current glasses or contact lens is not strong enough to allow you to see 20/20. If you're not wearing any glasses or contacts, then you should consider seeing and eye doctor. :)

OR it's possible that your camera's dioptric control is not calibrated.


350d
tamron 28-75 f2.8
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Bracketracer
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Dec 11, 2005 14:12 as a reply to  @ visionboy's post |  #6

Lense cap on,, use the green readout to set up

Great tip,,, found this in my search,, thankyou




  
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StevenRaith
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Dec 11, 2005 15:10 |  #7

Hmm. I am -3 in my left eye for my spectacle prescription, so sharp viewing minus glasses is not possible [which is a PITA].

Any idea how to check what adjustment I would need? Does anyone know if there is somewhere I could get this looked at? Reference charts with spectacle prescription/relevant adjuster type perchance?




  
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Mitcon
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Dec 11, 2005 21:04 |  #8

Very welcome Bracketracer, what we're here for and certainly what the search feature is for also.

The viewfinder on the 350D with it's standard diopter is adjustable between -3.0 to +1.0 diopter, you may be right near the verge so maybe buying then next level diopter adjustment lens should be able to solve your problem for you. theres 10 different lenses avail to you I think from memory.


Cheers Wayne :D
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visionboy
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Dec 12, 2005 00:48 as a reply to  @ StevenRaith's post |  #9

StevenRaith wrote:
Hmm. I am -3 in my left eye for my spectacle prescription, so sharp viewing minus glasses is not possible [which is a PITA].

Any idea how to check what adjustment I would need? Does anyone know if there is somewhere I could get this looked at? Reference charts with spectacle prescription/relevant adjuster type perchance?

with your glasses on you should have the setting to '0'
without glasses u should have set to -3

or
you can just turn the dial to where images are sharpest


350d
tamron 28-75 f2.8
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50 f1.8

  
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StevenRaith
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Dec 12, 2005 02:04 |  #10

Oh, right, I didnt ralise it was that simple....!

Seeing as I can't get it with the standard viewfinder, I'm guessing that getting an eye test and finding out what my prescription has changed to would be an idea before getting the adjuster then? :)

I can shoot with the glasses on, it's just a bit annoying....




  
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Mitcon
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Dec 12, 2005 03:47 |  #11

Sure you can shoot with glasses on, I do most the time.


Cheers Wayne :D
EOS 30D+350Dx2+BG-E2+BG-E3+18-55MkII+EF 70-300IS/USM+EF 75-300IIusm+Sigma 50-500DG+Tamron SP90 f2.8Di+Sigma 17-70+Kenco MC7 2x+580EX+430EX

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350D/Rebel XT Eyepiece Dioptric Adjustment
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