Overclock.net › Forums › Consumer Electronics › Photography › 7D front focusing? Or maybe its my 50mm?
New Posts  All Forums:Forum Nav:

7D front focusing? Or maybe its my 50mm?

post #1 of 10
Thread Starter 
I finally got around to shooting a little with the 7D today. I think I know why someone returned this body and Canon sold it as refurbished. Big time front focusing.

http://www.flickr.com/photos/jason_l...n/photostream/

Check that full res picture out (1/8000 sec, f/2.0, 50mm). Focus point is on the dog's right eye and its even off by just a little. Its off by a whole bunch. The 18-55 does the same thing and both lenses are fine on my T2i.

Time to send it back to Canon?
Edited by ljason8eg - 8/23/11 at 6:11pm
SFF Goodness
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k ASRock z87m OC formula MSI GTX 780 GAMING 8GB G Skill Ripjaw DDR3 2400MHz 
Hard DriveHard DriveCoolingOS
SanDisk Extreme II 480 GB Seagate 2TB Noctua NH-D14 Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell U2312HM x3 Das Model S Professional Silverstone Strider Gold Evolution 750w Silverstone SG10 
MouseAudioAudioAudio
Logitech G500 Xfi Titanium HD Audioengine 5+ Velodyne Impact 12 
  hide details  
Reply
SFF Goodness
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k ASRock z87m OC formula MSI GTX 780 GAMING 8GB G Skill Ripjaw DDR3 2400MHz 
Hard DriveHard DriveCoolingOS
SanDisk Extreme II 480 GB Seagate 2TB Noctua NH-D14 Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell U2312HM x3 Das Model S Professional Silverstone Strider Gold Evolution 750w Silverstone SG10 
MouseAudioAudioAudio
Logitech G500 Xfi Titanium HD Audioengine 5+ Velodyne Impact 12 
  hide details  
Reply
post #2 of 10
it could be the lenses but most likely i think you might want to send it in. but im not expert lol i would send it in just so it would calibrated and works properly

i would test it on a tripod just in case though since 50mm f2 is a little shallow it is possible user error from swaying or the dog moving or any number of things.

just my 2 cents though. dont take it as professional advice
Montage mkIII
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7-6700K ASUS ROG Maximus VIII Hero EVGA 980Ti Classified Corsair 16GB DDR4-3000 
Hard DriveHard DriveHard DriveCooling
Samsung 240GB EVO 850 Samsung 128GB EVO 830 Samsung 1TB EVO 850 CM 212EVO  
OSMonitorKeyboardPower
Win10 Dell U2713HM Logitech 810 EVGA Supernova 750W P2 
CaseMouseMouse PadAudio
Corsair 450D Razer Deathadder Steelpad QcK Audioengine D1 
Audio
Audio-technica ATH-A900X 
  hide details  
Reply
Montage mkIII
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7-6700K ASUS ROG Maximus VIII Hero EVGA 980Ti Classified Corsair 16GB DDR4-3000 
Hard DriveHard DriveHard DriveCooling
Samsung 240GB EVO 850 Samsung 128GB EVO 830 Samsung 1TB EVO 850 CM 212EVO  
OSMonitorKeyboardPower
Win10 Dell U2713HM Logitech 810 EVGA Supernova 750W P2 
CaseMouseMouse PadAudio
Corsair 450D Razer Deathadder Steelpad QcK Audioengine D1 
Audio
Audio-technica ATH-A900X 
  hide details  
Reply
post #3 of 10
Thread Starter 
Yeah, I wasn't on a tripod but that is off by a whole bunch. I did take 4 shots to make sure it wasn't an anomaly and all are equally bad.

I was playing with my 300mm lens as well with the dog running at me using AI servo and burst firing. I was still getting mostly front focused images.
SFF Goodness
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k ASRock z87m OC formula MSI GTX 780 GAMING 8GB G Skill Ripjaw DDR3 2400MHz 
Hard DriveHard DriveCoolingOS
SanDisk Extreme II 480 GB Seagate 2TB Noctua NH-D14 Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell U2312HM x3 Das Model S Professional Silverstone Strider Gold Evolution 750w Silverstone SG10 
MouseAudioAudioAudio
Logitech G500 Xfi Titanium HD Audioengine 5+ Velodyne Impact 12 
  hide details  
Reply
SFF Goodness
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k ASRock z87m OC formula MSI GTX 780 GAMING 8GB G Skill Ripjaw DDR3 2400MHz 
Hard DriveHard DriveCoolingOS
SanDisk Extreme II 480 GB Seagate 2TB Noctua NH-D14 Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell U2312HM x3 Das Model S Professional Silverstone Strider Gold Evolution 750w Silverstone SG10 
MouseAudioAudioAudio
Logitech G500 Xfi Titanium HD Audioengine 5+ Velodyne Impact 12 
  hide details  
Reply
post #4 of 10
then im out of ideas sorry. you might be ready to mail it in so you can get it back soon so you can enjoy your 7D
Montage mkIII
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7-6700K ASUS ROG Maximus VIII Hero EVGA 980Ti Classified Corsair 16GB DDR4-3000 
Hard DriveHard DriveHard DriveCooling
Samsung 240GB EVO 850 Samsung 128GB EVO 830 Samsung 1TB EVO 850 CM 212EVO  
OSMonitorKeyboardPower
Win10 Dell U2713HM Logitech 810 EVGA Supernova 750W P2 
CaseMouseMouse PadAudio
Corsair 450D Razer Deathadder Steelpad QcK Audioengine D1 
Audio
Audio-technica ATH-A900X 
  hide details  
Reply
Montage mkIII
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7-6700K ASUS ROG Maximus VIII Hero EVGA 980Ti Classified Corsair 16GB DDR4-3000 
Hard DriveHard DriveHard DriveCooling
Samsung 240GB EVO 850 Samsung 128GB EVO 830 Samsung 1TB EVO 850 CM 212EVO  
OSMonitorKeyboardPower
Win10 Dell U2713HM Logitech 810 EVGA Supernova 750W P2 
CaseMouseMouse PadAudio
Corsair 450D Razer Deathadder Steelpad QcK Audioengine D1 
Audio
Audio-technica ATH-A900X 
  hide details  
Reply
post #5 of 10
Wow, that's pretty bad, and I'm not even an avid photographer. I think Canon's customer support/service is supposed to be pretty good in terms of these things. At least, my experience with their point-and-click is pretty nice. They replaced screens that had clear discoloration/dead pixels at absolutely no cost to me. Not sure about something like this though...
    
CPUMotherboardGraphicsRAM
i5-2500K Biostar TP67B+ XFX HD5750 1GB 2x4GB DDR3 Corsair 1600 
Hard DriveOSMonitorPower
60GB OCZ SSD, 2x160GB HDD RAID0, 500GB+500GB+1.5TB Windows 7 Ultimate 64-bit Samsung SyncMaster 930B Antec SmartPower 450w 
Case
Antec 900 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5-2500K Biostar TP67B+ XFX HD5750 1GB 2x4GB DDR3 Corsair 1600 
Hard DriveOSMonitorPower
60GB OCZ SSD, 2x160GB HDD RAID0, 500GB+500GB+1.5TB Windows 7 Ultimate 64-bit Samsung SyncMaster 930B Antec SmartPower 450w 
Case
Antec 900 
  hide details  
Reply
post #6 of 10
Microadjust, apply to all lenses.

But really, if you can't fix it that way, return it.
Edited by sub50hz - 8/22/11 at 5:24pm
post #7 of 10
Thread Starter 
Quote:
Originally Posted by sub50hz View Post
Microadjust, apply to all lenses.

But really, if you can't fix it that way, return it.
Oh trust me, I tried that. I moved it all the way to the max and it did have an effect but not nearly enough.

On the bright side I just got off the phone with Canon's tech support and they've given me a pre paid shipping label to send it back with. Hopefully they can calibrate it and make me a happy customer.
SFF Goodness
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k ASRock z87m OC formula MSI GTX 780 GAMING 8GB G Skill Ripjaw DDR3 2400MHz 
Hard DriveHard DriveCoolingOS
SanDisk Extreme II 480 GB Seagate 2TB Noctua NH-D14 Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell U2312HM x3 Das Model S Professional Silverstone Strider Gold Evolution 750w Silverstone SG10 
MouseAudioAudioAudio
Logitech G500 Xfi Titanium HD Audioengine 5+ Velodyne Impact 12 
  hide details  
Reply
SFF Goodness
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k ASRock z87m OC formula MSI GTX 780 GAMING 8GB G Skill Ripjaw DDR3 2400MHz 
Hard DriveHard DriveCoolingOS
SanDisk Extreme II 480 GB Seagate 2TB Noctua NH-D14 Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell U2312HM x3 Das Model S Professional Silverstone Strider Gold Evolution 750w Silverstone SG10 
MouseAudioAudioAudio
Logitech G500 Xfi Titanium HD Audioengine 5+ Velodyne Impact 12 
  hide details  
Reply
post #8 of 10
yea micro adjust is micro so its not a super huge difference i dont think. my 30 just barely front focused and it took +8 to get it adjusted.
Montage mkIII
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7-6700K ASUS ROG Maximus VIII Hero EVGA 980Ti Classified Corsair 16GB DDR4-3000 
Hard DriveHard DriveHard DriveCooling
Samsung 240GB EVO 850 Samsung 128GB EVO 830 Samsung 1TB EVO 850 CM 212EVO  
OSMonitorKeyboardPower
Win10 Dell U2713HM Logitech 810 EVGA Supernova 750W P2 
CaseMouseMouse PadAudio
Corsair 450D Razer Deathadder Steelpad QcK Audioengine D1 
Audio
Audio-technica ATH-A900X 
  hide details  
Reply
Montage mkIII
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7-6700K ASUS ROG Maximus VIII Hero EVGA 980Ti Classified Corsair 16GB DDR4-3000 
Hard DriveHard DriveHard DriveCooling
Samsung 240GB EVO 850 Samsung 128GB EVO 830 Samsung 1TB EVO 850 CM 212EVO  
OSMonitorKeyboardPower
Win10 Dell U2713HM Logitech 810 EVGA Supernova 750W P2 
CaseMouseMouse PadAudio
Corsair 450D Razer Deathadder Steelpad QcK Audioengine D1 
Audio
Audio-technica ATH-A900X 
  hide details  
Reply
post #9 of 10
Thread Starter 
Yup its a tiny adjustment compared to the issue I'm having. I did take a few pictures over the weekend at a family gathering. Not the best lighting but I was using my speedlite; most if not all came out OOF. Something's gotta be up even if I'm not shooting charts.
SFF Goodness
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k ASRock z87m OC formula MSI GTX 780 GAMING 8GB G Skill Ripjaw DDR3 2400MHz 
Hard DriveHard DriveCoolingOS
SanDisk Extreme II 480 GB Seagate 2TB Noctua NH-D14 Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell U2312HM x3 Das Model S Professional Silverstone Strider Gold Evolution 750w Silverstone SG10 
MouseAudioAudioAudio
Logitech G500 Xfi Titanium HD Audioengine 5+ Velodyne Impact 12 
  hide details  
Reply
SFF Goodness
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k ASRock z87m OC formula MSI GTX 780 GAMING 8GB G Skill Ripjaw DDR3 2400MHz 
Hard DriveHard DriveCoolingOS
SanDisk Extreme II 480 GB Seagate 2TB Noctua NH-D14 Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell U2312HM x3 Das Model S Professional Silverstone Strider Gold Evolution 750w Silverstone SG10 
MouseAudioAudioAudio
Logitech G500 Xfi Titanium HD Audioengine 5+ Velodyne Impact 12 
  hide details  
Reply
post #10 of 10
Thread Starter 
The more I play with it the more I think now its my 50mm lens that is the issue and not the 7D. I tested the 300mm some more and it came out all good, the 50 on the other hand, its very strange. It focuses perfectly when I'm close to the object, but the farther the object is away from me, the more it starts to front focus. I have a bunch of shots to show what I'm talking about. All are taken with the body on a tripod. Focus is on the center of the deer's body using single point.

Close in it hits perfectly: http://www.flickr.com/photos/jason_l...n/photostream/
But gets worse: http://www.flickr.com/photos/jason_l...n/photostream/
And worse as I back up: http://www.flickr.com/photos/jason_l...n/photostream/

Same test at F/8 instead of f/2.8

Close: http://www.flickr.com/photos/jason_l...n/photostream/
Middle: http://www.flickr.com/photos/jason_l...n/photostream/
Far: http://www.flickr.com/photos/jason_l...n/photostream/

Now, f/2.8 with +20 MA. Now it looks like the closest shot is OOF but the other two are closer, but still not great IMO.

Close: http://www.flickr.com/photos/jason_l...n/photostream/
Middle: http://www.flickr.com/photos/jason_l...n/photostream/
Far: http://www.flickr.com/photos/jason_l...n/photostream/

The other three lenses don't do this and seem to hit focus fine now. Time to send the 50 in again?
SFF Goodness
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k ASRock z87m OC formula MSI GTX 780 GAMING 8GB G Skill Ripjaw DDR3 2400MHz 
Hard DriveHard DriveCoolingOS
SanDisk Extreme II 480 GB Seagate 2TB Noctua NH-D14 Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell U2312HM x3 Das Model S Professional Silverstone Strider Gold Evolution 750w Silverstone SG10 
MouseAudioAudioAudio
Logitech G500 Xfi Titanium HD Audioengine 5+ Velodyne Impact 12 
  hide details  
Reply
SFF Goodness
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770k ASRock z87m OC formula MSI GTX 780 GAMING 8GB G Skill Ripjaw DDR3 2400MHz 
Hard DriveHard DriveCoolingOS
SanDisk Extreme II 480 GB Seagate 2TB Noctua NH-D14 Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell U2312HM x3 Das Model S Professional Silverstone Strider Gold Evolution 750w Silverstone SG10 
MouseAudioAudioAudio
Logitech G500 Xfi Titanium HD Audioengine 5+ Velodyne Impact 12 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Photography
Overclock.net › Forums › Consumer Electronics › Photography › 7D front focusing? Or maybe its my 50mm?