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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

 
vengence
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Feb 26, 2014 11:39 |  #91

If it only happens with one lens (particularly a third party lens), I don't think you can blame the body for the problem. While canon isn't exactly great at sharing AF system with third parties, Sigma has added the USB dock to specifically upload firmware to the lenses for this reason. I'd suggest testing this with a couple of your other lenses to verify it's the one lens that has the problem.




  
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hairy_moth
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Feb 26, 2014 11:54 |  #92

This thread reminds me of the time that GM sent a bunch of cars to Washington state with defective windshields. Here's the story. (external link)


7D | 300D | G1X | Tokina 11-16mm f/2.8 | EF-S 17-55mm f/2.8 | EF-S 60mm f/2.8 Macro | EF 85mm f/1.8 | 70-200 f/2.8L MkII -- flickr (external link)

  
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Frodge
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Feb 26, 2014 12:13 |  #93

hairy_moth wrote in post #16719410 (external link)
This thread reminds me of the time that GM sent a bunch of cars to Washington state with defective windshields. Here's the story. (external link)

Not exactly. These are new cameras. So the bad af has not been there all along as the putting windshields were. Especially people that notice it right away adter coming from another camera.


_______________
“It's kind of fun to do the impossible.” - Walt Disney.
Equipment: Tokina 12-24mm, Canon 40mm 2.8, Tamron 17-50 2.8 XR Di, Canon 18-55mm, Canon 50mm 1.8, Tamron 70-300VC / T3I and 60D

  
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single_track
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Feb 26, 2014 12:31 |  #94

vengence wrote in post #16719353 (external link)
If it only happens with one lens (particularly a third party lens), I don't think you can blame the body for the problem. While canon isn't exactly great at sharing AF system with third parties, Sigma has added the USB dock to specifically upload firmware to the lenses for this reason. I'd suggest testing this with a couple of your other lenses to verify it's the one lens that has the problem.

Thanks for the suggestion except one problem, as I understand it, the 70d issues is isolated to lenses that are 2.8 or faster. I wish I had a barn full of fast Canon glass but for now, the 24-70 is my only fast Canon lens and the Sigma is the only other fast lens that I have. My other L's never seem to miss a beat.

I just went thru a sports season of shooting basketball games with the 70-200 f4L IS and the 24-70 f2.8L using primarily center point viewfinder and the hit rate for focus accuracy was near perfect for both so I was pretty sure the 24-70 would come out fine in these tests. Of course, almost all of the basketball shots were longer than 15'.

I agree that if the problem is only 3rd party lenses, this is not a Canon problem. My sigma, while having good sharpness at 1.4, great sharpness stopped down and great bokeh, has never been a well-oiled focusing machine. It sometimes fails to achieve focus even with well lit, very contrasty subjects. This is true on my 40d, 5d and 70d. The focus motor seems to skip and chatter sometimes as it steps around searching for focus.

Still, the 5' sigma failures will bug me for the 70d performance.


I always want C&C on my shots.
Gear list: 70d, 5d & 40d | 70-200L/f4 IS | 24-70L | 17-40L | Sigmalux | 17-85 IS | Opteka 6.5mm fisheye | 580exII
Flickr: https://www.flickr.com​/photos/120400139@N03/ (external link)

  
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hairy_moth
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Feb 26, 2014 12:32 |  #95

Frodge wrote in post #16719454 (external link)
Not exactly. These are new cameras. So the bad af has not been there all along as the putting windshields were. Especially people that notice it right away adter coming from another camera.

Yes, I know, there are some minor differences. But when this focus issue is all sorted out, I suspect the conclusion (stating with the heading: "ONE FOR THE BOOKS") from the article will be the same -- well maybe not exactly the same -- the local authorities haven't been involved and, you know -- it not 1954, but besides that... ;)


7D | 300D | G1X | Tokina 11-16mm f/2.8 | EF-S 17-55mm f/2.8 | EF-S 60mm f/2.8 Macro | EF 85mm f/1.8 | 70-200 f/2.8L MkII -- flickr (external link)

  
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vengence
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Feb 26, 2014 12:35 |  #96

single_track wrote in post #16719492 (external link)
Thanks for the suggestion except one problem, as I understand it, the 70d issues is isolated to lenses that are 2.8 or faster. I wish I had a barn full of fast Canon glass but for now, the 24-70 is my only fast Canon lens and the Sigma is the only other fast lens that I have. My other L's never seem to miss a beat.

I just went thru a sports season of shooting basketball games with the 70-200 f4L IS and the 24-70 f2.8L using primarily center point viewfinder and the hit rate for focus accuracy was near perfect for both so I was pretty sure the 24-70 would come out fine in these tests. Of course, almost all of the basketball shots were longer than 15'.

I agree that if the problem is only 3rd party lenses, this is not a Canon problem. My sigma, while having good sharpness at 1.4, great sharpness stopped down and great bokeh, has never been a well-oiled focusing machine. It sometimes fails to achieve focus even with well lit, very contrasty subjects. This is true on my 40d, 5d and 70d. The focus motor seems to skip and chatter sometimes as it steps around searching for focus.

Still, the 5' sigma failures will bug me for the 70d performance.

Sounds like you've got the perfect excuse to buy a 40mm pancake.... ;)

I'm trying to figure out if I want to do this testing on my 70D this weekend. I need to get to it, but sadly this is a hobby for me and other life obligations often takes priorities.




  
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Keyan
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Feb 26, 2014 20:11 |  #97

Looking through a bunch of pics....I have some misses, mostly hits, using my 17-55 in a variety of conditions. I was using center point wide open for an entire day at an apple orchard with my kids running around and have a lot of keepers. I feel like in part this is going to be a isolated issue, and I seem to recall a lot of similar threads about focus "problems" with the 7D..and just about every other body.


Cameras: 7D2, S100
Lenses: 17-55 f/2.8 IS USM, 18-135 STM, 24-70 f/4L IS USM, 50 f/1.4 USM,70-300L IS USM
Other Stuff: 430 EX II, Luma Labs Loop 3, CamRanger

  
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vengence
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Feb 26, 2014 20:28 |  #98

So I ordered a focus genie. I'll get some testing in this weekend or next depending on when it comes in. I've got 3 canon 2.8s or better: 100 2.8, 40 2.8, 50 1.4... so we'll see what happens.




  
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ooze_21
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Feb 27, 2014 03:05 as a reply to  @ vengence's post |  #99

This af issue is very disturbing indeed. Canon 70d is the camera that I want to upgrade to from my t2i. I need a camera with better focus for more keepers. Now I have to wait and see if Canon does something about this problem.

Reading upon it, it seems that 7d has had similiar complaints. Not looking too good.


Canon 5D Mark III - Canon 24-105 F4L IS - Canon 70-200 F2.8L IS II - Canon 40mm F2.8 STM - Canon 50 F1.8 STM - Canon 430EX II - YN-622C - YN-622C-TX

  
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Frodge
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Feb 27, 2014 04:28 |  #100

ooze_21 wrote in post #16721045 (external link)
This af issue is very disturbing indeed. Canon 70d is the camera that I want to upgrade to from my t2i. I need a camera with better focus for more keepers. Now I have to wait and see if Canon does something about this problem.

Reading upon it, it seems that 7d has had similiar complaints. Not looking too good.

Get a 60d or 6d.


_______________
“It's kind of fun to do the impossible.” - Walt Disney.
Equipment: Tokina 12-24mm, Canon 40mm 2.8, Tamron 17-50 2.8 XR Di, Canon 18-55mm, Canon 50mm 1.8, Tamron 70-300VC / T3I and 60D

  
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hairy_moth
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Feb 27, 2014 07:37 |  #101

ooze_21 wrote in post #16721045 (external link)
This af issue is very disturbing indeed. Canon 70d is the camera that I want to upgrade to from my t2i. I need a camera with better focus for more keepers. Now I have to wait and see if Canon does something about this problem.

Reading upon it, it seems that 7d has had similar complaints. Not looking too good.

Read up on the t2i.. there are complaints about that too. Read the complaints; determine if they are consistent with your experience. That will help you determine how much weight you should give to online lore when making your purchasing decisions.

The complaints in this thread seem to be limited to early adopters of the 70D that purchased their camera in Germany; if you are not purchasing the camera from a German retailer's original stock, I would not worry too much (or at all) about the issues you are reading here.

If I had trusted all of the online naysayer, I would still be waiting to find that first piece of equipment to purchase, because everything available so far has been plagued with problems: the 7D has horrible noise, the 11-16's flare is so bad it is unusable, the 17-55 has build quality issues, the 70-200 is pretty good, but far too expensive and is a rip-off; all of these problems are well documented on this board, and there is a grain of truth to each.


7D | 300D | G1X | Tokina 11-16mm f/2.8 | EF-S 17-55mm f/2.8 | EF-S 60mm f/2.8 Macro | EF 85mm f/1.8 | 70-200 f/2.8L MkII -- flickr (external link)

  
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vapore0n
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Feb 27, 2014 07:41 |  #102

ooze_21 wrote in post #16721045 (external link)
This af issue is very disturbing indeed. Canon 70d is the camera that I want to upgrade to from my t2i. I need a camera with better focus for more keepers. Now I have to wait and see if Canon does something about this problem.

Reading upon it, it seems that 7d has had similiar complaints. Not looking too good.

The focus issues seem to affect some fast lens users.
I have the 50 1.8 and 100L and have not had any focus issues. Due to cold winter, I have only used the 70D inside the house, and even with dim lights I havent had focus issues.

I too upgraded from a T2i and it was a big upgrade in every single way.




  
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Frodge
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Feb 27, 2014 07:46 |  #103

hairy_moth wrote in post #16721274 (external link)
Read up on the t2i.. there are complaints about that too. Read the complaints; determine if they are consistent with your experience. That will help you determine how much weight you should give to online lore when making your purchasing decisions.

The complaints in this thread seem to be limited to early adopters of the 70D that purchased their camera in Germany; if you are not purchasing the camera from a German retailer's original stock, I would not worry too much (or at all) about the issues you are reading here.

If I had trusted all of the online naysayer, I would still be waiting to find that first piece of equipment to purchase, because everything available so far has been plagued with problems: the 7D has horrible noise, the 11-16's flare is so bad it is unusable, the 17-55 has build quality issues, the 70-200 is pretty good, but far too expensive and is a rip-off; all of these problems are well documented on this board, and there is a grain of truth to each.

There is truth to this. But on the same hand, when people with experience post photos of at inconsistencies, we need to address the fact that here could in fact, be a problem with some of the units.


_______________
“It's kind of fun to do the impossible.” - Walt Disney.
Equipment: Tokina 12-24mm, Canon 40mm 2.8, Tamron 17-50 2.8 XR Di, Canon 18-55mm, Canon 50mm 1.8, Tamron 70-300VC / T3I and 60D

  
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jaromire
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Feb 27, 2014 08:32 |  #104

Well my 70D is not from Germany but from Malaysia. Bought the Sigma 18-35 f1.8 to replace my Tamron 17-50 f2.8 due to error message lenses not attached during Video mode after a few second recording consistently.




  
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hairy_moth
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Feb 27, 2014 08:46 |  #105

jaromire wrote in post #16721385 (external link)
Well my 70D is not from Germany but from Malaysia. Bought the Sigma 18-35 f1.8 to replace my Tamron 17-50 f2.8 due to error message lenses not attached during Video mode after a few second recording consistently.

Completely different issue than the one being discussed.


7D | 300D | G1X | Tokina 11-16mm f/2.8 | EF-S 17-55mm f/2.8 | EF-S 60mm f/2.8 Macro | EF 85mm f/1.8 | 70-200 f/2.8L MkII -- flickr (external link)

  
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70D focus issue & blurred pictures
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