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Thread started 23 May 2013 (Thursday) 13:00
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Can't focus properly through the viewfinder on my T3

 
skyh
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May 23, 2013 13:00 |  #1

I've had my T3 for almost 2 years and last year, I sent it to Canon to get some part cleaned (something got into the camera while I was changing lenses). When I got it back, I noticed that it was hard to focus when looking through the viewfinder. Objects I want to focus on get less blurry than the rest of the view, but are never in sharp, clear focus, like it's supposed to be, although the images turn out the way I want them to when I review them. It doesn't matter which lens I use or if it's AF or MF. Looking through the live view, however, is perfectly fine. Would this be possible to correct without sending it back to the shop (since the problem only started when I got my camera back from them)?




  
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FlyingPhotog
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May 23, 2013 13:04 |  #2

Canon probably tweaked your VF Diopter...

Small wheel, next to viewfinder? Take off your lens, point the camera at a blank wall and re-adjust the diopter until the VF symbology is sharp.


Jay
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Rafromak
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May 23, 2013 14:56 |  #3

FlyingPhotog wrote in post #15960177 (external link)
Canon probably tweaked your VF Diopter...

Small wheel, next to viewfinder? Take off your lens, point the camera at a blank wall and re-adjust the diopter until the VF symbology is sharp.

bw!

Good one. There is a thread about checking your camera's diopter


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bclark22
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May 23, 2013 14:57 |  #4

I second the Dioptics adjustment. Should be a small wheel around the vicinity of the viewfinder. Adjust this and it should be fine.




  
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gjl711
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May 23, 2013 15:05 |  #5

What jay said. If your uncomfortable having your lens off for any length of time as you adjust, just unfocus it as much as possible.


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May 23, 2013 15:57 as a reply to  @ gjl711's post |  #6

Since you adjust the diopter whilst looking at the viewfinder information, not the image shown in the viewfinder, it doesn't matter if you have the lens focused or not. Neither do you need to remove it from the camera.


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May 23, 2013 16:03 |  #7

apersson850 wrote in post #15960821 (external link)
Since you adjust the diopter whilst looking at the viewfinder information, not the image shown in the viewfinder, it doesn't matter if you have the lens focused or not. Neither do you need to remove it from the camera.

Actually it works best to do the adjustment with the lens cap on...


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gjl711
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May 23, 2013 16:33 |  #8

apersson850 wrote in post #15960821 (external link)
Since you adjust the diopter whilst looking at the viewfinder information, not the image shown in the viewfinder, it doesn't matter if you have the lens focused or not. Neither do you need to remove it from the camera.

Though you are right, it does not need to be removed or OOF, it is much easier and more accurate to do so when all the background image goes totally blurry.


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FlyingPhotog
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May 23, 2013 16:36 |  #9

MakisM1 wrote in post #15960844 (external link)
Actually it works best to do the adjustment with the lens cap on...

Actually, my viewfinder markings are all black so that's a problem... ;)


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Rafromak
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May 23, 2013 16:55 |  #10

MakisM1 wrote in post #15960844 (external link)
Actually it works best to do the adjustment with the lens cap on...

I just point the camera toward a white board or wall, and then adjust the diopter. This way I can see as the focus points on the viewfinder turn darker or sharper. It's the same as adjusting a riflescope. In this case the crosshairs turn from a lighter or fuzzier color to solid black at the sharpest point.


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YARDBURNER
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May 23, 2013 19:13 as a reply to  @ Rafromak's post |  #11

I just wish the diopter wheel were a little harder to move
or there was a way to lock it once set. (save the super glue jokes:cool:)
It seems get bumped a lot




  
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Tiberius
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May 23, 2013 19:51 |  #12

YARDBURNER wrote in post #15961388 (external link)
I just wish the diopter wheel were a little harder to move
or there was a way to lock it once set. (save the super glue jokes:cool:)
It seems get bumped a lot

I tried to come up with a joke that didn't involve superglue, but I got stuck.


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Rafromak
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May 24, 2013 01:22 |  #13

If anything I would place a small section of black electrical tape over the adjuster wheel. But it's not really a big problem as long as you are aware of it. The adjuster wheel is very tight on my 7D, but a little loose on my 5DII, so I double-check the latter one every now and then just to make sure.


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May 24, 2013 01:40 |  #14

FlyingPhotog wrote in post #15960931 (external link)
Actually, my viewfinder markings are all black so that's a problem... ;)

Not the green digits and icons at the bottom. You just need to keep the shutter button halfpressed every so often.

Actually I like that the diopter is easy to adjust. I use glasses on a regular basis, but I also equip my camera with a dioptric adjustment lens on the eyepiece. When having that mounted, I can cranck the adjustment in the opposite direction, to counter the effect, and then I see fine with my glasses on. When I take my glasses off, I crank the adjustment in the other direction and see fine without glasses too.
I like this, because if I'm trying to capture sports pictures on a rainy day, my glasses and eyepice easily fogs up. Removing the glasses takes away two surfaces where the fog may build up.

A typical rainy day

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May 24, 2013 03:24 as a reply to  @ apersson850's post |  #15

Lol what kind of fool doesn't know to check the diopter..... oh that would be me.
Knocked it off focus on a couple of occasions and spent several minutes trying to get my lenses to focus.

As if that wasn't embarrassing enough I then tried to use my camera with my reading glasses. Couldn't see anything so thought "Ha wont catch me again it isn't my lenses by the Dioptic" and, of course, wasted several minutes trying to get the dioptic to compensate for my awful eyesight (well outside its limited range) before realising my mistake :(


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Can't focus properly through the viewfinder on my T3
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