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Author Topic: EOS-M sharper than 6D?  (Read 16586 times)

ND40

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Re: EOS-M sharper than 6D?
« Reply #30 on: July 18, 2013, 10:42:05 AM »
No, this was an AF (single point) shot.  I did some other shots with live view and manual focus and they looked similar.  I'll post one this afternoon for comparison.

If that's how properly focused shots look, it appears that something is wrong with your camera.

That's what I've been thinking...  This is still under warranty.

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Re: EOS-M sharper than 6D?
« Reply #30 on: July 18, 2013, 10:42:05 AM »

miejoe

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Re: EOS-M sharper than 6D?
« Reply #31 on: July 18, 2013, 10:55:09 AM »
Is there any chance we're seeing vibrations from mirror slap in the 6D's large mirror?

Might as well use Mirror Lockup for any future test shots just to rule that out.

neuroanatomist

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Re: EOS-M sharper than 6D?
« Reply #32 on: July 18, 2013, 10:56:08 AM »
Is there any chance we're seeing vibrations from mirror slap in the 6D's large mirror?

Not in the Live View shots.
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Swphoto

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Re: EOS-M sharper than 6D?
« Reply #33 on: July 18, 2013, 10:56:42 AM »
Is there any chance we're seeing vibrations from mirror slap in the 6D's large mirror?

Might as well use Mirror Lockup for any future test shots just to rule that out.

One of the shots was at 1/1500.

ND40

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Re: EOS-M sharper than 6D?
« Reply #34 on: July 18, 2013, 11:10:40 AM »
Is there any chance we're seeing vibrations from mirror slap in the 6D's large mirror?

Might as well use Mirror Lockup for any future test shots just to rule that out.

One of the shots was at 1/1500.

Yes.  With input from others on the CR Forum I refined my testing process.  Some of the earlier shots were with camera settings that didn't make for a good side-by-side comparison.  The most recent photo's were shot at recommended settings from BozillaNZ. 

I'll upload a live view, manual focus shot from the last set of pictures in about an hour.

bholliman

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Re: EOS-M sharper than 6D?
« Reply #35 on: July 18, 2013, 11:38:28 AM »
All of your 6D shots are very soft in my opinion.  I would suspect a focus issue, but you stated you have performed AFMA on the lenses and you also included some live view shots.

100% crops of my 6D images are much sharper than what you posted.

If it were my camera I would ship it back to Canon to repair or replace.
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infared

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Re: EOS-M sharper than 6D?
« Reply #36 on: July 18, 2013, 12:27:31 PM »
Hmmmm.... what on earth would cause a camera to be soft like this????????...there is no point in the frame where there is true sharpness.
5D Mark III, Canon 15mm f/2.8 Fisheye, Canon 17mm f/4L TS-E, Canon 16-35mm f/4L IS, 21mm f/2.8 Zeiss, Sigma 35mm f/1.4, 24-70mm f/2.8 II, 50mm f/1.4 Sigma Art, 85mm f/1.2L, 100mm f/2.8L Macro,70-200mm f/2.8L IS II...1.4x converter III, and some other stuff.....

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Re: EOS-M sharper than 6D?
« Reply #36 on: July 18, 2013, 12:27:31 PM »

ecka

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Re: EOS-M sharper than 6D?
« Reply #37 on: July 18, 2013, 12:40:56 PM »
Did you use something weird to clean your 6D sensor?
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Swphoto

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Re: EOS-M sharper than 6D?
« Reply #38 on: July 18, 2013, 12:44:35 PM »
Did you use something weird to clean your 6D sensor?

That's a good thought - maybe something dried and left a film (sorry) over the sensor?

ecka

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Re: EOS-M sharper than 6D?
« Reply #39 on: July 18, 2013, 12:55:15 PM »
Did you use something weird to clean your 6D sensor?

That's a good thought - maybe something dried and left a film (sorry) over the sensor?

That, or even damaging it.
Another possible reason - cheap UV filters.
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neuroanatomist

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Re: EOS-M sharper than 6D?
« Reply #40 on: July 18, 2013, 12:59:12 PM »
Another possible reason - cheap UV filters.

He used the same lens for both cameras.  I sort of think he would have mentioned putting on a cheap UV filter for the 6D shots and taking it off for the EOS M shots, don't you?  ;)
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ecka

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Re: EOS-M sharper than 6D?
« Reply #41 on: July 18, 2013, 01:14:05 PM »
Another possible reason - cheap UV filters.

He used the same lens for both cameras.  I sort of think he would have mentioned putting on a cheap UV filter for the 6D shots and taking it off for the EOS M shots, don't you?  ;)

Yes, I thought the same thing. However, nobody here did mention this possibility, so I did :).
« Last Edit: July 18, 2013, 01:43:45 PM by ecka »
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ND40

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Re: EOS-M sharper than 6D?
« Reply #42 on: July 18, 2013, 02:00:39 PM »
Thanks for the suggestions.  To answer some recent questions:
(1) I have not manually cleaned the sensor on this camera.  I've only had it 6 weeks and use had been limited until now.
(2) No UV or other filters on the lenses for any of these test shots, just bare lens.

This is very strange.  I've worked extensively on manual focus to see if I can get a sharp shot, but no luck so far.

Here are my latest round of test shots.

* EF 70-200 2.8 II lens
* WB set to daylight
* shot in RAW processed in DPP as a batch with all default settings.  100% crops of JPG
* cameras mounted on tripod, wireless remote trigger

(1) M: Av, 102mm, f2.8, ISO 100
(2) 6D: Av, 155mm, f4.5, ISO 250 autofocus
(3) 6D: Av, 155mm, f4.5, ISO 250 live view, manual focus

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Re: EOS-M sharper than 6D?
« Reply #42 on: July 18, 2013, 02:00:39 PM »

ND40

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Re: EOS-M sharper than 6D?
« Reply #43 on: July 18, 2013, 02:02:44 PM »
Three more shots in the same order as above.  Same tripod set-up, different subject.

neuroanatomist

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Re: EOS-M sharper than 6D?
« Reply #44 on: July 18, 2013, 02:04:33 PM »
Time to stop testing and start calling Canon Service...
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Re: EOS-M sharper than 6D?
« Reply #44 on: July 18, 2013, 02:04:33 PM »