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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

 
Keyan
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Mar 17, 2014 09:21 as a reply to  @ post 16764274 |  #181

Mine as best as I can tell does not have this issue.

Tested Lenses:
Canon EF-S 17-55
Canon EF 50mm 1.4

First 3 of serial: 022
Pre-ordered from Best Buy, US, delivered in late August 2013


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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Keyan
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Mar 17, 2014 10:07 |  #182

nazmo wrote in post #16764241 (external link)
Hi All, just to give my input.

Canon 50mm 1.4 - Front focused, I fixed this with a +13 micro adjustment

Tamron 17-55mm f2.8 - Focusing at all apertures seem OK under 3 meters. Over 3 meters, I need to change stop to f4.

Tamron 70-200mm f2.8 non-vc - Was front focussing, +3 adjustment.
HOWEVER, at 2.8, any distance within 3 meters, no issue at 2.8. Any distance over 3meters, I need to stop to f4 or f4.5 to ensure sharpness. No micro adjustments help here.

So it seems large aperture at distance can be problematic. I must still do a more scientific approach, but this seems to be happening to me.

Have you tried your Tamrons on a different body? This almost seems like a calibration issue with them and you may want to contact Tamron about it. Do they focus correctly when using a non-center point?


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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Scoobert
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Mar 17, 2014 13:28 |  #183

Keyan wrote in post #16764576 (external link)
Have you tried your Tamrons on a different body? This almost seems like a calibration issue with them and you may want to contact Tamron about it. Do they focus correctly when using a non-center point?

+1
Definitely try on another camera if you can.
Plus when you are using your Focus Genie or the dot tune to set your MFA make sure you don't use the center focus point. My Tammy 28-75 was at +18 one time at 17 feet then was +9 at 20 feet on the very next test. Once I used the side focus point it dropped to +3 and stayed there through the range of test.
Basically, don't trust the center focus point to give you a good reading for a MFA.




  
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single_track
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Mar 17, 2014 14:23 as a reply to  @ Scoobert's post |  #184

For those following along, I did my outdoor tests (read: good lighting) and found zero mis-focuses with my 24-70L f2.8 ver I and zero mis-focuses with my Sigma 50MM 1.4 with both the viewfinder center-point and live view actuations. I did these at various distances but focused on 15' where some others have had problems. This was previously posted earlier in this thread.

I redid the tests indoor (15') with pretty low lighting and found no mis-focuses under any of the tests.

Test summary:
I tested extensively with my two fastest lenses under a wide variety of conditions (24x70L and 50 1.4, wide open and f4 apertures, low/good lighting, 5', 15' 30', live view vs center point VF vs other point VF) under pretty controlled conditions (heavy tripod, MLU, Consistent lighting, PC viewing at 100%, timer delayed drive).

Conclusions:
No difference with live view vs center point viewfinder vs other point viewfinder on my 24-70 or 50MM Siggy under all tests EXCEPT with the Siggy at 5'. The Siggy missed 60% of the time at 5'. However, I believe this to be a Siggy problem and not at 70D problem because I also had missed with the Siggy at 5' with the 40D (30% misses) and the 5D (misses percentage not recorded). Siggy focusing has been iffy since day one. Great bokeh though.

I am no longer worrying about this issue for myself, and I wish others the best. If I had a problem to the magnitude that a few people seem to, I would raise holy hell with the point-of-sale dealer and with Canon directly until they replaced my camera or fixed the problem.

My serial number starts with '052'


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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MakisM1
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Mar 17, 2014 14:49 |  #185

single_track wrote in post #16765216 (external link)
... Siggy focusing has been iffy since day one. Great bokeh though.

bw!

If all you get is lemons, make lemonade! JK...

Glad to hear that your 70D performs as expected. Hopefully it's something in the OS of a single batch of cameras that got corrupted (although I think I remember somebody saying that they reflashed the software)...:rolleyes:


Gerry
Canon 5D MkIII/Canon 60D/Canon EF-S 18-200/Canon EF 24-70L USM II/Canon EF 70-200L 2.8 USM II/Canon EF 50 f1.8 II/Σ 8-16/ 430 EXII
OS: Linux Ubuntu/PostProcessing: Darktable/Image Processing: GIMP

  
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Keyan
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Mar 17, 2014 14:59 |  #186

Scoobert wrote in post #16765087 (external link)
+1
Definitely try on another camera if you can.
Plus when you are using your Focus Genie or the dot tune to set your MFA make sure you don't use the center focus point. My Tammy 28-75 was at +18 one time at 17 feet then was +9 at 20 feet on the very next test. Once I used the side focus point it dropped to +3 and stayed there through the range of test.
Basically, don't trust the center focus point to give you a good reading for a MFA.

Well, your 70D Center point is also acting up, so yeah I wouldn't trust it for anything, including MFA :)


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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Scoobert
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Mar 17, 2014 19:12 |  #187

Keyan wrote in post #16765312 (external link)
Well, your 70D Center point is also acting up, so yeah I wouldn't trust it for anything, including MFA :)

LOL yeh I know :)

Just wanted to make sure that wasn't what he was using to set his MFA :)




  
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Scoobert
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Mar 17, 2014 19:26 |  #188

MakisM1 wrote in post #16764257 (external link)
May I suggest that ANYONE who tests their 70D post their results whether positive for this problem or not and a portion of the serial number of their camera (somebody has to do the research, so that privacy is ensured, while meaningful results can still be obtained)...

Good idea

My Center point is HOSED.
Lenses tried.
Canon 50 1.4, Tamron 28-75 2.8, Canon 85 1.8. All get the same exact result, at wide open aperture thru viewfinder HORRIBLE focus. 1 in 20 might be a picture you could use.
Wide open Liveview nails focus almost every time.

Ser 0620*******
Delivered 12-30-13




  
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single_track
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Mar 17, 2014 19:46 as a reply to  @ Scoobert's post |  #189

^ Wow. Presumably manufactured after mine (052) and maybe the worst hit rate that I have read about so far. What happens when you use another focus point (other than center) thru the view finder? Does it focus like the center point (terrible) or like live view (great)?


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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Scoobert
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Mar 17, 2014 20:14 |  #190

single_track wrote in post #16765966 (external link)
^ Wow. Presumably manufactured after mine (052) and maybe the worst hit rate that I have read about so far. What happens when you use another focus point (other than center) thru the view finder? Does it focus like the center point (terrible) or like live view (great)?

If I use one of side points it gets a lot better. 14 out of 20 it NAILED of the last 6 4 were pretty good with the other 2 being blurry.




  
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Frodge
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Mar 17, 2014 20:19 |  #191

Scoobert wrote in post #16765922 (external link)
Good idea

My Center point is HOSED.
Lenses tried.
Canon 50 1.4, Tamron 28-75 2.8, Canon 85 1.8. All get the same exact result, at wide open aperture thru viewfinder HORRIBLE focus. 1 in 20 might be a picture you could use.
Wide open Liveview nails focus almost every time.

Ser 0620*******
Delivered 12-30-13

I'm wondering if your particular body was thrown around by a UPS man around Christmas that would have rather been at home...


_______________
“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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Mar 17, 2014 20:33 |  #192

Scoobert wrote in post #16766033 (external link)
If I use one of side points it gets a lot better. 14 out of 20 it NAILED of the last 6 4 were pretty good with the other 2 being blurry.

This is a serious problem. Even 70% (14 out of 20) is unusable, in my opinion. Are you hounding Canon?


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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Scoobert
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Mar 17, 2014 20:36 |  #193

single_track wrote in post #16765966 (external link)
^ Wow. Presumably manufactured after mine (052) and maybe the worst hit rate that I have read about so far. What happens when you use another focus point (other than center) thru the view finder? Does it focus like the center point (terrible) or like live view (great)?

To give you an idea of my world :)

I went outside yesterday, on a beautiful day (for Nebraska :) ). Set everything up and took 10 shots in a row.
Camera on tripod, 17 feet from target, 50 1.4 lens, 100 ISO, 1/2500, mirror lock up on, electronic trigger and a 2 second delay.
Shots 1 through 5 in order viewfinder.

These shots were brought into LR5 as raw files. Cropped and exported with NO changes.

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Liveview, Not going to show the rest because the all look exactly like this one.

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Scoobert
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Mar 17, 2014 20:42 |  #194

single_track wrote in post #16766078 (external link)
This is a serious problem. Even 70% (14 out of 20) is unusable, in my opinion. Are you hounding Canon?

Not to hounding yet. I have started the system of sending it back. But I have a friend who sent his in over 3 weeks ago with the same exact problem. He got it back with the same exact problem :(.
So now Toby (the website and video guy linked to in this thread) has sent his in. As this is my only camera I was hoping to see if it would get fixed before I bothered sending it off.
If Toby's comes back Unfixed there is not much sense sending it in. But I likely will anyhow :)




  
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single_track
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Mar 17, 2014 20:43 as a reply to  @ Scoobert's post |  #195

I would be camped out at my local camera shop where I bought this problem, while on hold with Canon Customer Service.


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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70D focus issue & blurred pictures
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