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My 7D consistently BACKFOCUSES considerably

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Geir Ove

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Hello,

I also started to suspect that my 7D foucsed in the wrong places, so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
 
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
--
JusGene
'The easiest thing you can be ... is wrong!' -Me (7/29/1993)
'Statistically, people make mistakes 70% of the time' -Independent Research Firm
'The more you know, the more you don't know' -Me (8/14/1987)
'Life is nothing, but for a bunch of words' -Me (11/4/1990)
RD-175, X-9, 450si(DATE), SPxi, Mamiya 645, D7u
 
  • Cener Focus Point selected for AF shot !
  • Camera serial#: 00410244
Geir Ove
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
 
JusGene said:
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
--
JusGene
'The easiest thing you can be ... is wrong!' -Me (7/29/1993)
'Statistically, people make mistakes 70% of the time' -Independent
Research Firm
'The more you know, the more you don't know' -Me (8/14/1987)
'Life is nothing, but for a bunch of words' -Me (11/4/1990)
RD-175, X-9, 450si(DATE), SPxi, Mamiya 645, D7u
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
 
I have #004060XX, and it focuses perfectly
Geir Ove said:
  • Cener Focus Point selected for AF shot !
  • Camera serial#: 00410244
Geir Ove
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
 
on loger distances, yes, but try the ruler or some close-ups. Mine also focuses more and more correctly the greater the distance is.

Geir Ove
JacquesBalthazar said:
Geir Ove said:
  • Cener Focus Point selected for AF shot !
  • Camera serial#: 00410244
Geir Ove
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
 
I had a problem with backfocus when using my 50mm f1.7 minolta lens. It turned out to be a problem with the lens itself. All my other lenses were fine but the 50mm had a pretty bad backfocus problem. I had used this lens on my 600si film body and never noticed the problem, but looking back through my pics I did have quite a few that had focus problems. I just counted them as user error ect.

I think that users are noticing a lot of lens issues that they never notcied/paid attention to in film shots. With digitals ease of taking, reviewing, and blowing up pictures everyone is seeing the lens faults that they never noticed. A lot of these issues would go unoticed on a 4x6 walmart print.

When I started going through my limited lens collection on the 7D I was amazed at how bad some of my lenses were.

At least this was my experience.
Geir Ove said:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
Click to expand...
--
Thanks,
Chadd
http://www.pbase.com/chadd
 
Hello,

I suppose you are right. However, I don't understand how the lens can make the camera focus wrongly? I thought the AF system turned the servo motor of the lens until the picture is in focus (Closed Loop Regulation to speak in Control engineering terms). However, if the camera does Open Loop Control (no feedback), then it estimates how much the servo motor should be turned and then give that signal to the lens. If the lens motor then behaves errarically, the error will occur.

I think it is VERY SAD that we need to put up with this kind of problem with equipment in this price range!

I have tested my A1 focus, and it performs very well.

Geir Ove
Chadd Thompson said:
I think that users are noticing a lot of lens issues that they
never notcied/paid attention to in film shots. With digitals ease
of taking, reviewing, and blowing up pictures everyone is seeing
the lens faults that they never noticed. A lot of these issues
would go unoticed on a 4x6 walmart print.

When I started going through my limited lens collection on the 7D I
was amazed at how bad some of my lenses were.

At least this was my experience.
Geir Ove said:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
Click to expand...
--
Thanks,
Chadd
http://www.pbase.com/chadd
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
 
Mine focuses perfectly at all distances, as far as I can tell up to now, even wide open. I only own two lenses at the moment (50mm f1.7 and 100mm f2.8 SF), so not pretending any universal truth. Not played with the ruler, but played with newspaper (was not testing focus, was testing AS, but those pics show perfect focus, consistently). Happy to mail u a 100% crop of one of those, if u want.
Geir Ove said:
Geir Ove
JacquesBalthazar said:
Geir Ove said:
  • Cener Focus Point selected for AF shot !
  • Camera serial#: 00410244
Geir Ove
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
 
As Chadd said below, it can be the lens. See my response to him.

Geir Ove
JacquesBalthazar said:
Geir Ove said:
Geir Ove
JacquesBalthazar said:
Geir Ove said:
  • Cener Focus Point selected for AF shot !
  • Camera serial#: 00410244
Geir Ove
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
 
Well,

I may have to retract this statement. I just checked my lenses again and it seems that a tamron lens I have may also be having a problem with backfocus. It is much harder to tell though because it is only an f4.5 so it doesn't have a super shallow DOF. I also tried my 50mm 1.7 again that I thought I had working ok the other day, but at 10ft it is off by around 8" or so. The distances I checked with it the other day were much closer, in which the camera nails the focus with the 50mm 1.7.

Also now that I think about it what you mention about the lens/af deal in all reality should be correct. I wpuld think that the camera should be what determines the AF point not the lens. As long as the lens focus can focus to the distance the body tries to put it at. I wish I had another fast lens besides the 135 2.8 "which does ok" to test with. Anyone out there that can do some tests with some faster lenses?

Thanks for bringing this to my attention again as it does seem there is at least some sort of focusing issue here. Does anyone have a 50mm 1.7 lens that will focus accurately at 10ft?

Getting DSLR's to focus correctly must be a bear. You would think that AF would be one thing that they would make sure was spot on before they released a camera?

At this point I would just like to buy something that doesn't have issues. It seems that is not an option anymore though as almost every brand I have looked at someone has been complaining about some sort of problems.

If this does turn out to be an issue I wonder if it is something that can be fixed with a FW release or if it is a send the camera in deal?
Chadd Thompson said:
All my
other lenses were fine but the 50mm had a pretty bad backfocus
problem.
Click to expand...
--
Thanks,
Chadd
http://www.pbase.com/chadd
 
IF the Focus System uses an Open Loop Regulation Stepping Motor to adjust the distance indicated by the camera AF system, then it might step to far or short if the Stepping Motor Accelration / Deceleration table is not carefully followed (How fast the Lens Motor accellerates up to speed and slows down again to hit the target posision: This depends upon load). This also explains how one lens can work, and another NOT: IT depends on the LOAD the lens exerts on the AF Stepping Motor.

From my last tests, it looks like the above can be the case: If I put the lens at Infninity it backfocuses LESS than if it is preset at the near limit before the test. See test results below.

If my assumptions here are correct, the AF motor is acrually to blame. Since the lens contains NO LOGIC, I cannot see how the lens can fail.

However, if the lens contains FEEDBACK of the lens position (Closed Loop Regulation) , this feedback info may be innacurate and thus some lenses may be to blame.

Focus preset at Infinity before focus test:

http://objective.bitfikler.com/geirove/web/temp_images/focus_preset_at_infinity.jpg

Focus preset at Near Limit (0.25 cm) before test:

http://objective.bitfikler.com/geirove/web/temp_images/focus_preset_at_near_limit.jpg
 
Hi

I have exactly the same issue as you and my camera is going back tomorrow - see my posts under title "a frustrating week"

David
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
 
I certainly hope KM sorts this out, because I relly like this camera, and sure will get one as soon as the AF issue is fixed.

Geir Ove
David 000 said:
I have exactly the same issue as you and my camera is going back
tomorrow - see my posts under title "a frustrating week"

David
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
 
I've found that my 85mm/1.4 G backfocusses consistently, 3 to 5cm at 3m, a lot more it seems at greater ranges. The 100mm/2 displays this to a smaller degree. At close ranges, both lenses seem to reasonably accurate. My 50mm/1.4 just seems to be inconsistent at times.

Despite all of this, I'm keeping the 7D, dwelling on the positive aspects. I can work around the backfocus issue by tweaking the focus by using DMF, luckily the focus in the viewfinder is accurate. 90% of my photos are with the 35mm/2 which is autofocussing very well. I just hope KM come up with an explanation of the problem, and hopefully a fix (of body or lens).

Cheers,
Daniel.
 
Geir Ove said:
Geir Ove
David 000 said:
I have exactly the same issue as you and my camera is going back
tomorrow - see my posts under title "a frustrating week"

David
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
 
Hi!

I sent you an email earlier this evening regarding this issue.
My camera has serial#: 00410202, so I guess they are from the same batch.

It would be really interesting if we could get together and try out each others lenses to see if there is any difference between the cameras, and hopefully get a bit closer to isolating the focusing issues.

-Torstein
Geir Ove said:
Geir Ove
David 000 said:
I have exactly the same issue as you and my camera is going back
tomorrow - see my posts under title "a frustrating week"

David
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
 
Well, guys, I’m sorry to hear about your problems. It’s been anticipated that those who gets the first samples mayl be some kind of beta testers.

Backfocus is unfortunately nothing new … I still remember all he panic about Nikon d100 and canon 10d (not to mention 20D, or D70)

I hope KM will comment this issue and fix them.

I didn’t still receive my 7D. And guess what, I will gladly take one of your samples camera … I’m that confident that KM will fix that;)

Happy shooting

--
7D dedicated website http://www.dyxum.com
 
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
--I been following these threads about BackFocus problems with your Lenses.....Logic tells me it can not be the Lenses that's at fault because majority of you are useing different lenses..You can't tell me that different lenses from same or different manufacturers are ALL at Fault!!!!

It has to either be the AF in the Camera, or you all got a Big Learning Curve with how to use this 7D..!!
MrScary (DennisR)
Swansea, Wales. UK

http://www.pbase.com/dennisr
http://community.webshots.com/user/mrscarecrow
http://digiden.photoshare.co.nz
 
I have 004101XX, i havent noticed any backfocus. BUT.. mine is going back, it hangs up sometimes and sometimes when i switches CF-card, the cam won´t start up right, and can´t be turned off until the battery is taken out. Ive also lost 5 pictures that has been corrupted.

Geir Ove, i live in norway too. Where did you buy yours?
I bought mine at ddmr.no.
JacquesBalthazar said:
Geir Ove said:
  • Cener Focus Point selected for AF shot !
  • Camera serial#: 00410244
Geir Ove
Geir Ove said:
Hello,

I also started to suspect that my 7D foucsed in the wrong places,
so I decided to set up a test, the infamous Ruler test:

Setup for both shots below:
  • Minolta 28mm 2.8 lens. Minimum Focus distance: 30 cm.
  • Camera set to Single Shot AF for one shot,
and Manual Focus for the MF shot
  • Aperture Mode, f2.8, s 1/60 Flash Used
  • Campera put on a tripod
  • Focused on number 20 on right side of Ruler in both cases.
Distance: 40 cm from camera lens.

Result:

Results repeated at least 10 times for AF with consistently the
same SUBSTANTIAL BACKFOCUS result! The number 30 is in focus!

My camera is going back. I will wait until KM fixes this. I so far
LOVE the rest of the camera and its imnage quality.

AF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_s_af.jpg

MF sample:

http://objective.bitfikler.com/geirove/web/temp_images/ruler_mf.jpg

Geir Ove

--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
--
My album at: http://objective.bitfikler.com/geirove/web/
Click to expand...
Click to expand...
 
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