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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 14 Jan 2014 (Tuesday) 07:48
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70D focus issue & blurred pictures

 
Jiggo0109
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Nov 05, 2014 18:13 |  #1336

musicmaster wrote in post #17253001 (external link)
All right. Got a Refurbed 70D from the Canon direct store. Threw on my Canon 50 1.4 and shot at F/1.6

Focus using Live view is clearly sharper than using the standard focus points. Do I call Canon support or go through Canon Sales to get a new one?

That being said, I don't notice it with my Tamron 17-50 2.8...

This was also my problem even after a successful repair of my 70d and only to find out at the end that it was a lens issue (sigma 50 1.4). After Sigma replaced my 50, I get sharper images even at 1.4 but always get blurry photos due to camera movement. Try it on a tripod first.




  
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Invertalon
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Nov 05, 2014 20:38 |  #1337

Scoobert wrote in post #17254358 (external link)
Great news Invertalon.

I good working 70D is a very nice camera. It's no 5Diii, then again it doesnt cost like one either :)

Very true! I have not shot a "crop" camera since I sold off my 7D 3-4years ago when I bought the 5D Mark II (and currently 5D3)... So while it's a bit of a IQ difference, the images still look great. I look forward to actually taking real pictures with it, eventually. :D

I mainly bought it primarily as a backup but I plan to use it with my telephotos when needed. The $600 price was much easier to swallow for a backup than the $1700 7D Mark II which would have been my choice if this deal did not roll around!


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LonelyBoy
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Nov 06, 2014 22:13 |  #1338

Phoenixkh wrote in post #16936653 (external link)
I contacted Canon customer service in regards to my wife's SL1... there is a way to do a hard reset but I can't recall how to do it... for cameras that have that internal battery.

I just emailed Canon customer support about a hard reboot for the 70D. I'll report back when they reply.

I was thinking about an SL1. Would you mind saying what the issue with your wife's was? I was hoping it wouldn't suffer from this issue, since it seemed to use the older 9-point AF system that everyone here calls reliable.


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samsen
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Dec 29, 2014 13:42 |  #1339

So is this AF problem that has made so many good deals available on 70D recently?


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titans856
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Dec 29, 2014 17:50 |  #1340

Could be.

My center point focus is very erratic on my faster lenses (35mm F2 (non-IS), 24mm STM and 17-50 2.8) when focusing anywhere from 15, 25, 50+ feet. When it misses (quite often) it tends to front focus by varying degrees, which makes AFMA useless. If I switch one AF point to the left or right of center, the problem goes away.

This 70D was bought brand new from Adorama in November.

If I had the foresight I would have returned it in within the first 30 days, but there are so many posts out there blaming AF issues on the users, so I figured I had to to my homework and learn about the "more advanced AF system" and how to properly do tests (I am not passing the blame, I get why this is an issue for many cameras, but I think the 70D issue is a special case). I should have went with my gut in knowing something was off about my new body. There was just a lot more to learn coming from a 450D, even assuming I had a 100% functional new 70D body.

I borrowed my Dad's T3i for spurts of time to make sure my lenses weren't out of whack or my technique. But his center point functions as expected with the faster lenses.

With the 19AF points, it does make it easier than the 9 point AF system to use non-center points, but it's kind of a bummer that my camera's most accurate AF point is the least reliable for shots. It also makes using the center zone mostly useless as well.

I'm going to Hawaii in a few weeks and plan to use my off-center points for the trip. After then I'll try and deal with my Canon warranty. I'm assuming I will get the "electrical calibration/adjustment​s" the first trip anyway.

This experience has kind of bummed me out on my Canon gear. I was super excited to jump from my 450D.




  
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samsen
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Dec 29, 2014 18:58 as a reply to  @ titans856's post |  #1341

Sorry to hear that and YES, don't give up.

I love Canon but its seems at times it is a one way love and other party looks at financial gains before anything else.
Now I am wondering what percentage of the great deals under "Refurbished" by Canon or others are just the same defective bodies with no attempt to rectify the problem...


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DaveKosiba
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Post edited over 4 years ago by DaveKosiba. (2 edits in all)
     
Jan 14, 2015 10:41 |  #1342

No updates to this thread in over two weeks. Has everyone who has had a problem gotten some resolution?

Meanwhile the 7d II focus issue thread is very active.

Seems to be lots of discussion with regard to focus on these two camera bodies. I assume the commonality is the new 20.2MP APS-C 'Dual Pixel CMOS AF' sensor that Canon uses in both the 70d and 7d II.

I have a 70d that I purchased in December of 2013 and so far have not noticed any focus issues that were not user error. I have done the Dot Tune method of MFA for all my lenses so possibly that helped, or my 70d just doesn't have the issue that is causing people problems.


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firemanchip
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Jan 14, 2015 11:05 |  #1343

Well I just got my 70D back from Canon a few days ago and due to crummy weather, I have not had a chance to really test it yet. Ive done some shots around the house and the results have been good. Im shooting with the Sigma 18-35 1.8. They said it was improperly set at factory. Well see how it goes.


Canon EOS 70D EOS 5D Mark IV | Tokina AT-X 116 AF Pro DX 11-16mm f/2.8 | Tamron SP AF 17-50mm f/2.8 Di II LD Aspherical [IF] AF 70-300mm f/4.5-5.6 Di LD 1:2 Macro Zoom SP 70-200mm f/2.8 Di VC USD G2 | Sigma 18-35mm f/1.8 DC HSM Art | Canon EF 100mm f/2.8 Macro USM EF 50mm f/1.8 STM EF 24-70mm f/2.8L II USM EF 16-35 f/4 L IS USM

  
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khwaja
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Jan 14, 2015 13:05 |  #1344

firemanchip wrote in post #17381998 (external link)
Well I just got my 70D back from Canon a few days ago and due to crummy weather, I have not had a chance to really test it yet. Ive done some shots around the house and the results have been good. Im shooting with the Sigma 18-35 1.8. They said it was improperly set at factory. Well see how it goes.

I got my sigma 30mm 1.4 calibrated. How do I test for focusing issue with my 70D and sigma 30mm non art lens. Unfortunately my return window is expired.


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firemanchip
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Jan 14, 2015 15:45 |  #1345

khwaja wrote in post #17382196 (external link)
I got my sigma 30mm 1.4 calibrated. How do I test for focusing issue with my 70D and sigma 30mm non art lens. Unfortunately my return window is expired.

I just ordered the Sigma lens dock from B@H so I can adjust the 18-35 1.8 and any future Sigmas I buy. Im getting ready to purchase the 6D and when I get that Im going to get the 35 1.4 A.


Canon EOS 70D EOS 5D Mark IV | Tokina AT-X 116 AF Pro DX 11-16mm f/2.8 | Tamron SP AF 17-50mm f/2.8 Di II LD Aspherical [IF] AF 70-300mm f/4.5-5.6 Di LD 1:2 Macro Zoom SP 70-200mm f/2.8 Di VC USD G2 | Sigma 18-35mm f/1.8 DC HSM Art | Canon EF 100mm f/2.8 Macro USM EF 50mm f/1.8 STM EF 24-70mm f/2.8L II USM EF 16-35 f/4 L IS USM

  
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Two ­ Hot ­ Shoes
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Jan 14, 2015 17:09 |  #1346

The 70D focus issue is an inconsistent front/back focus problem and as such it's one that can't be AFMA'd correct. The issue effects the centre AF point when fast lenses are used. To Test set your 70D up on something solid, use a good shutter speed (like 1/250) and the timer function of 10 seconds. De-foucs the lens, by hand, between successive shots. Set AF to one shot.

First a few control shots using live view and the centre AF point. Next, using the view finder, take shots, allowing the camera to focus using the centre point a few times and a few random outer points as well.

If your camera is affected you will notice perfect focus using live view as well as the outer points in the view finder. The centre focus of the viewfinder will be front/back on different images while the centre of the live view will be spot on.
I had my 70D replaced/refunded using the method above (with a little pressure from my dealer backing me up) so Canon honoured their end of the dealings.


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ltech221
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Jan 14, 2015 18:50 |  #1347

I thought I had the same issue with my 70D using my Sigma 18-35. I used MFA on the body with no luck, ordered the sigma dock and tried various settings without much luck. It was still very random at F1.8-2.8. Finally I sent my Lens & Body to sigma and they calibrated/adjusted the lens to the body. Sent it out on a Sunday and got it back on the Friday after (So Cal to NY and back). Now it rarely misses using the center point. Just as much accuracy as using my 15-85. Can't tell a difference between live view and the eyepiece now :-D I had a canon 50 1.8 but I found out that it was just a crap lens on all bodies I used it on, 3 T2i's, a 60D, a 5d2, a 7d, and my 70D.




  
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Invertalon
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Jan 15, 2015 07:05 |  #1348

I have used my 70D recently at the zoo with my 300 f/2.8 II and also around the house with my 85L at f/1.2... It tends to nail the focus just fine without any considerable difference in shot-to-shot performance. Same as my 5D3 that I can tell (you get some variance, but nothing considerable... normal).

With my uses so far, all appears fine with my refurb I got two months ago or so.


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GrantCC
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Jan 20, 2015 21:29 as a reply to  @ post 17011802 |  #1349

Hi Scoobert,

I'm having exactly the same problems with my 70D, and while Canon has looked, and is more or less still looking at it, basically they are saying that's as good as I should expect. So, is your 70d still working OK?

Thanks
Grant




  
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GrantCC
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Jan 29, 2015 18:54 |  #1350

I'm having the same OOF problems with my 70D, but just wondered if there's a way, other than a screen dump, of saving the pics with the AF points showing. Point is to save a hi res image so I can show it on these forums.

Thanks
Grant




  
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70D focus issue & blurred pictures
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