Thank you Mishkin...

Frank Nichols said:

I am not crazy after all.

I knew you had a "measurbators dream chart, but didn't bother with
it since things have been going fairly well with my lenses and 10D
lately.

Got my Tamron 28-75/2.8 Di back from service today and decided to
print out your chart and see how it faired against my 24-70L.

Well, forget about focus for a minute and look at this:



Notice the focus square is offset and the image is tilted? Well for
months I have been frequently having to rotate my shots about 2 to
3 degrees in PS and I was really getting frustrated with myself for
not paying closer attention to making sure my shots were square and
level.

Well, I checked, double checked and checked again, and in the view
finder my focus square exactly matches (overlays) the square in the
printed chart!

Another problem solved!

Sorry if shooting "tests" offends certain people on this forum -
but I ASSumed this was my problem and not the camera - so much for
ASSUming my 10D works correctly.

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed. Without this chart (and Mishkin)
I would have gone on being frustrated with myself and my technique!

Thank you Mishkin!

Frank
--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

John Pinches said:

I think this is why you say you have to correct the slant in some
shots and not others. If it was a camera defect, than every shot
would need correction.

John

Frank Nichols said:

I am not crazy after all.

I knew you had a "measurbators dream chart, but didn't bother with
it since things have been going fairly well with my lenses and 10D
lately.

Got my Tamron 28-75/2.8 Di back from service today and decided to
print out your chart and see how it faired against my 24-70L.

Well, forget about focus for a minute and look at this:



Notice the focus square is offset and the image is tilted? Well for
months I have been frequently having to rotate my shots about 2 to
3 degrees in PS and I was really getting frustrated with myself for
not paying closer attention to making sure my shots were square and
level.

Well, I checked, double checked and checked again, and in the view
finder my focus square exactly matches (overlays) the square in the
printed chart!

Another problem solved!

Sorry if shooting "tests" offends certain people on this forum -
but I ASSumed this was my problem and not the camera - so much for
ASSUming my 10D works correctly.

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed. Without this chart (and Mishkin)
I would have gone on being frustrated with myself and my technique!

Thank you Mishkin!

Frank
--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

--
http://www.jbp-photography.net
Equipment List In Profile

Click to expand...

Frank Nichols said:

Thak would make sense if I had not used a mirror on the target to
align the camera prior to the shot?

Frank

John Pinches said:

I think this is why you say you have to correct the slant in some
shots and not others. If it was a camera defect, than every shot
would need correction.

John

Frank Nichols said:

I am not crazy after all.

I knew you had a "measurbators dream chart, but didn't bother with
it since things have been going fairly well with my lenses and 10D
lately.

Got my Tamron 28-75/2.8 Di back from service today and decided to
print out your chart and see how it faired against my 24-70L.

Well, forget about focus for a minute and look at this:



Notice the focus square is offset and the image is tilted? Well for
months I have been frequently having to rotate my shots about 2 to
3 degrees in PS and I was really getting frustrated with myself for
not paying closer attention to making sure my shots were square and
level.

Well, I checked, double checked and checked again, and in the view
finder my focus square exactly matches (overlays) the square in the
printed chart!

Another problem solved!

Sorry if shooting "tests" offends certain people on this forum -
but I ASSumed this was my problem and not the camera - so much for
ASSUming my 10D works correctly.

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed. Without this chart (and Mishkin)
I would have gone on being frustrated with myself and my technique!

Thank you Mishkin!

Frank
--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

--
http://www.jbp-photography.net
Equipment List In Profile

Click to expand...

--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

Frank Nichols said:

Thak would make sense if I had not used a mirror on the target to
align the camera prior to the shot?

Frank

John Pinches said:

I think this is why you say you have to correct the slant in some
shots and not others. If it was a camera defect, than every shot
would need correction.

John

Frank Nichols said:

I am not crazy after all.

I knew you had a "measurbators dream chart, but didn't bother with
it since things have been going fairly well with my lenses and 10D
lately.

Got my Tamron 28-75/2.8 Di back from service today and decided to
print out your chart and see how it faired against my 24-70L.

Well, forget about focus for a minute and look at this:



Notice the focus square is offset and the image is tilted? Well for
months I have been frequently having to rotate my shots about 2 to
3 degrees in PS and I was really getting frustrated with myself for
not paying closer attention to making sure my shots were square and
level.

Well, I checked, double checked and checked again, and in the view
finder my focus square exactly matches (overlays) the square in the
printed chart!

Another problem solved!

Sorry if shooting "tests" offends certain people on this forum -
but I ASSumed this was my problem and not the camera - so much for
ASSUming my 10D works correctly.

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed. Without this chart (and Mishkin)
I would have gone on being frustrated with myself and my technique!

Thank you Mishkin!

Frank
--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

--
http://www.jbp-photography.net
Equipment List In Profile

Click to expand...

--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

John Pinches said:

I again looked at this and examined the focus area of the chart.
Especially the offset of the image circle. It does still appear to
me that the right side of the chart is falling somewhat back.
Compare the offset of the viewfinder circle to the printed circle
on each side. The right side has more offset indicating possibly
that the right side of the chart is slightly further back from the
lens than the left side. Thus the image slanting left-to-right.

I take it you placed the mirror in front of the subject chart to
align the camera. Could the chart somehow still be out of whack a
bit?

Can you try mounting the chart on the wall and aligning with mirror
again? This would virtually eliminate the depth issue unless you
have very crooked walls!

This thread has my curiousity up! I may want to try this one
myself if you continue getting these results.

John

Frank Nichols said:

Thak would make sense if I had not used a mirror on the target to
align the camera prior to the shot?

Frank

John Pinches said:

I think this is why you say you have to correct the slant in some
shots and not others. If it was a camera defect, than every shot
would need correction.

John

Frank Nichols said:

I am not crazy after all.

I knew you had a "measurbators dream chart, but didn't bother with
it since things have been going fairly well with my lenses and 10D
lately.

Got my Tamron 28-75/2.8 Di back from service today and decided to
print out your chart and see how it faired against my 24-70L.

Well, forget about focus for a minute and look at this:



Notice the focus square is offset and the image is tilted? Well for
months I have been frequently having to rotate my shots about 2 to
3 degrees in PS and I was really getting frustrated with myself for
not paying closer attention to making sure my shots were square and
level.

Well, I checked, double checked and checked again, and in the view
finder my focus square exactly matches (overlays) the square in the
printed chart!

Another problem solved!

Sorry if shooting "tests" offends certain people on this forum -
but I ASSumed this was my problem and not the camera - so much for
ASSUming my 10D works correctly.

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed. Without this chart (and Mishkin)
I would have gone on being frustrated with myself and my technique!

Thank you Mishkin!

Frank
--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

--
http://www.jbp-photography.net
Equipment List In Profile

Click to expand...

--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

--
http://www.jbp-photography.net
Equipment List In Profile

Click to expand...

Frank Nichols said:

I will try again tomorrow with the chart on a wall. the fact it was
taped to a box means it could have moved when I removed the mirror.

Frank

John Pinches said:

I again looked at this and examined the focus area of the chart.
Especially the offset of the image circle. It does still appear to
me that the right side of the chart is falling somewhat back.
Compare the offset of the viewfinder circle to the printed circle
on each side. The right side has more offset indicating possibly
that the right side of the chart is slightly further back from the
lens than the left side. Thus the image slanting left-to-right.

I take it you placed the mirror in front of the subject chart to
align the camera. Could the chart somehow still be out of whack a
bit?

Can you try mounting the chart on the wall and aligning with mirror
again? This would virtually eliminate the depth issue unless you
have very crooked walls!

This thread has my curiousity up! I may want to try this one
myself if you continue getting these results.

John

Frank Nichols said:

Thak would make sense if I had not used a mirror on the target to
align the camera prior to the shot?

Frank

John Pinches said:

I think this is why you say you have to correct the slant in some
shots and not others. If it was a camera defect, than every shot
would need correction.

John

Frank Nichols said:

I am not crazy after all.

I knew you had a "measurbators dream chart, but didn't bother with
it since things have been going fairly well with my lenses and 10D
lately.

Got my Tamron 28-75/2.8 Di back from service today and decided to
print out your chart and see how it faired against my 24-70L.

Well, forget about focus for a minute and look at this:



Notice the focus square is offset and the image is tilted? Well for
months I have been frequently having to rotate my shots about 2 to
3 degrees in PS and I was really getting frustrated with myself for
not paying closer attention to making sure my shots were square and
level.

Well, I checked, double checked and checked again, and in the view
finder my focus square exactly matches (overlays) the square in the
printed chart!

Another problem solved!

Sorry if shooting "tests" offends certain people on this forum -
but I ASSumed this was my problem and not the camera - so much for
ASSUming my 10D works correctly.

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed. Without this chart (and Mishkin)
I would have gone on being frustrated with myself and my technique!

Thank you Mishkin!

Frank
--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

--
http://www.jbp-photography.net
Equipment List In Profile

Click to expand...

--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

--
http://www.jbp-photography.net
Equipment List In Profile

Click to expand...

--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

• Apocalypse Now

Abu Mumia said:

I don't understand what is supposedly wrong here. It looks to me
like the film plane is not parallel to the chart...why it is tilted
is beyond me. But it has nothing to do with the lens.

Are you guys aware that you could take a thousand successful pro
photographers and not a single one would have any interest in what
you are doing? That's cause it is a very small blip on the radar.
If you are doing some sort of engineering documentation it might be
relevant...so better buy a Hasselblad or a Leica. There is a reason
those cameras cost so much.

Meanwhile, Canon is giving you a camera that does what it needs to
do at a price you'll pay. A new Leica R9 will cost you $2,000 for
the body and $3,000 for the equivalent zoom lens you are using. Are
you going to pay that?

Abu Mumia

--
'He's out there operating without any decent restraint, totally beyond
the pale of any acceptable human conduct.'

• Apocalypse Now

Click to expand...

John Pinches said:

Abu Mumia said:

I don't understand what is supposedly wrong here. It looks to me
like the film plane is not parallel to the chart...why it is tilted
is beyond me. But it has nothing to do with the lens.

Are you guys aware that you could take a thousand successful pro
photographers and not a single one would have any interest in what
you are doing? That's cause it is a very small blip on the radar.
If you are doing some sort of engineering documentation it might be
relevant...so better buy a Hasselblad or a Leica. There is a reason
those cameras cost so much.

Meanwhile, Canon is giving you a camera that does what it needs to
do at a price you'll pay. A new Leica R9 will cost you $2,000 for
the body and $3,000 for the equivalent zoom lens you are using. Are
you going to pay that?

Abu Mumia

--
'He's out there operating without any decent restraint, totally beyond
the pale of any acceptable human conduct.'

• Apocalypse Now

Click to expand...

--
http://www.jbp-photography.net
Equipment List In Profile

Click to expand...

Frank Nichols said:

Frank

Frank Nichols said:

Thak would make sense if I had not used a mirror on the target to
align the camera prior to the shot?

Frank

John Pinches said:

I think this is why you say you have to correct the slant in some
shots and not others. If it was a camera defect, than every shot
would need correction.

John

Frank Nichols said:

I am not crazy after all.

I knew you had a "measurbators dream chart, but didn't bother with
it since things have been going fairly well with my lenses and 10D
lately.

Got my Tamron 28-75/2.8 Di back from service today and decided to
print out your chart and see how it faired against my 24-70L.

Well, forget about focus for a minute and look at this:



Notice the focus square is offset and the image is tilted? Well for
months I have been frequently having to rotate my shots about 2 to
3 degrees in PS and I was really getting frustrated with myself for
not paying closer attention to making sure my shots were square and
level.

Well, I checked, double checked and checked again, and in the view
finder my focus square exactly matches (overlays) the square in the
printed chart!

Another problem solved!

Sorry if shooting "tests" offends certain people on this forum -
but I ASSumed this was my problem and not the camera - so much for
ASSUming my 10D works correctly.

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed. Without this chart (and Mishkin)
I would have gone on being frustrated with myself and my technique!

Thank you Mishkin!

Frank
--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

--
http://www.jbp-photography.net
Equipment List In Profile

Click to expand...

--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

Frank Nichols said:

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed.

Click to expand...

Abu Mumia said:

I don't understand what is supposedly wrong here. It looks to me
like the film plane is not parallel to the chart...why it is tilted
is beyond me. But it has nothing to do with the lens.

Are you guys aware that you could take a thousand successful pro
photographers and not a single one would have any interest in what
you are doing? That's cause it is a very small blip on the radar.
If you are doing some sort of engineering documentation it might be
relevant...so better buy a Hasselblad or a Leica. There is a reason
those cameras cost so much.

Meanwhile, Canon is giving you a camera that does what it needs to
do at a price you'll pay. A new Leica R9 will cost you $2,000 for
the body and $3,000 for the equivalent zoom lens you are using. Are
you going to pay that?

Abu Mumia

--
'He's out there operating without any decent restraint, totally beyond
the pale of any acceptable human conduct.'

• Apocalypse Now

Click to expand...

Frank Nichols said:

I am at the office and will test tonight when I get home, but I had
a question.

I understand perspective distortion, but I don't understand how, if
I am viewing the subject through the lens, how can I compose the
shot and see in the viewfinder that the two squares and circle
(viewfinder and subject) are in perfect alignment, and yet, in the
images they are off by so much?

Should I see the distortion in the viewfinder?

Frank

John Pinches said:

Abu Mumia said:

I don't understand what is supposedly wrong here. It looks to me
like the film plane is not parallel to the chart...why it is tilted
is beyond me. But it has nothing to do with the lens.

Are you guys aware that you could take a thousand successful pro
photographers and not a single one would have any interest in what
you are doing? That's cause it is a very small blip on the radar.
If you are doing some sort of engineering documentation it might be
relevant...so better buy a Hasselblad or a Leica. There is a reason
those cameras cost so much.

Meanwhile, Canon is giving you a camera that does what it needs to
do at a price you'll pay. A new Leica R9 will cost you $2,000 for
the body and $3,000 for the equivalent zoom lens you are using. Are
you going to pay that?

Abu Mumia

--
'He's out there operating without any decent restraint, totally beyond
the pale of any acceptable human conduct.'

• Apocalypse Now

Click to expand...

--
http://www.jbp-photography.net
Equipment List In Profile

Click to expand...

--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

• Apocalypse Now

Pete Perry said:

(Chuck Westfalls document)
http://www.pbase.com/image/18920257/original

However, if you're saying you notice about a 1mm shift in focus
(which isn't likely) then I could understand that.

Frank Nichols said:

Frank

Frank Nichols said:

Thak would make sense if I had not used a mirror on the target to
align the camera prior to the shot?

Frank

John Pinches said:

I think this is why you say you have to correct the slant in some
shots and not others. If it was a camera defect, than every shot
would need correction.

John

Frank Nichols said:

I am not crazy after all.

I knew you had a "measurbators dream chart, but didn't bother with
it since things have been going fairly well with my lenses and 10D
lately.

Got my Tamron 28-75/2.8 Di back from service today and decided to
print out your chart and see how it faired against my 24-70L.

Well, forget about focus for a minute and look at this:



Notice the focus square is offset and the image is tilted? Well for
months I have been frequently having to rotate my shots about 2 to
3 degrees in PS and I was really getting frustrated with myself for
not paying closer attention to making sure my shots were square and
level.

Well, I checked, double checked and checked again, and in the view
finder my focus square exactly matches (overlays) the square in the
printed chart!

Another problem solved!

Sorry if shooting "tests" offends certain people on this forum -
but I ASSumed this was my problem and not the camera - so much for
ASSUming my 10D works correctly.

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed. Without this chart (and Mishkin)
I would have gone on being frustrated with myself and my technique!

Thank you Mishkin!

Frank
--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

--
http://www.jbp-photography.net
Equipment List In Profile

Click to expand...

--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

Click to expand...

Frank Nichols said:

I am not crazy after all.

I knew you had a "measurbators dream chart, but didn't bother with
it since things have been going fairly well with my lenses and 10D
lately.

Got my Tamron 28-75/2.8 Di back from service today and decided to
print out your chart and see how it faired against my 24-70L.

Well, forget about focus for a minute and look at this:



Notice the focus square is offset and the image is tilted? Well for
months I have been frequently having to rotate my shots about 2 to
3 degrees in PS and I was really getting frustrated with myself for
not paying closer attention to making sure my shots were square and
level.

Well, I checked, double checked and checked again, and in the view
finder my focus square exactly matches (overlays) the square in the
printed chart!

Another problem solved!

Sorry if shooting "tests" offends certain people on this forum -
but I ASSumed this was my problem and not the camera - so much for
ASSUming my 10D works correctly.

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed. Without this chart (and Mishkin)
I would have gone on being frustrated with myself and my technique!

Thank you Mishkin!

Frank
--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

John Davis said:

Maybe this is another tempest in a glass...

John

Frank Nichols said:

I am not crazy after all.

I knew you had a "measurbators dream chart, but didn't bother with
it since things have been going fairly well with my lenses and 10D
lately.

Got my Tamron 28-75/2.8 Di back from service today and decided to
print out your chart and see how it faired against my 24-70L.

Well, forget about focus for a minute and look at this:



Notice the focus square is offset and the image is tilted? Well for
months I have been frequently having to rotate my shots about 2 to
3 degrees in PS and I was really getting frustrated with myself for
not paying closer attention to making sure my shots were square and
level.

Well, I checked, double checked and checked again, and in the view
finder my focus square exactly matches (overlays) the square in the
printed chart!

Another problem solved!

Sorry if shooting "tests" offends certain people on this forum -
but I ASSumed this was my problem and not the camera - so much for
ASSUming my 10D works correctly.

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed. Without this chart (and Mishkin)
I would have gone on being frustrated with myself and my technique!

Thank you Mishkin!

Frank
--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

Click to expand...

Frank Nichols said:

I am not crazy after all.

I knew you had a "measurbators dream chart, but didn't bother with
it since things have been going fairly well with my lenses and 10D
lately.

Got my Tamron 28-75/2.8 Di back from service today and decided to
print out your chart and see how it faired against my 24-70L.

Well, forget about focus for a minute and look at this:



Notice the focus square is offset and the image is tilted? Well for
months I have been frequently having to rotate my shots about 2 to
3 degrees in PS and I was really getting frustrated with myself for
not paying closer attention to making sure my shots were square and
level.

Well, I checked, double checked and checked again, and in the view
finder my focus square exactly matches (overlays) the square in the
printed chart!

Another problem solved!

Sorry if shooting "tests" offends certain people on this forum -
but I ASSumed this was my problem and not the camera - so much for
ASSUming my 10D works correctly.

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed. Without this chart (and Mishkin)
I would have gone on being frustrated with myself and my technique!

Thank you Mishkin!

Frank
--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...

Frank Nichols said:

I am not crazy after all.

I knew you had a "measurbators dream chart, but didn't bother with
it since things have been going fairly well with my lenses and 10D
lately.

Got my Tamron 28-75/2.8 Di back from service today and decided to
print out your chart and see how it faired against my 24-70L.

Well, forget about focus for a minute and look at this:



Notice the focus square is offset and the image is tilted? Well for
months I have been frequently having to rotate my shots about 2 to
3 degrees in PS and I was really getting frustrated with myself for
not paying closer attention to making sure my shots were square and
level.

Well, I checked, double checked and checked again, and in the view
finder my focus square exactly matches (overlays) the square in the
printed chart!

Another problem solved!

Sorry if shooting "tests" offends certain people on this forum -
but I ASSumed this was my problem and not the camera - so much for
ASSUming my 10D works correctly.

Now that I know what the problem is it is a simple matter to send
it off to Canon and have it fixed. Without this chart (and Mishkin)
I would have gone on being frustrated with myself and my technique!

Thank you Mishkin!

Frank
--
Someday I will take a good photograph - until then I will blame my
equipment.

Click to expand...