Archived from groups: rec.photo.digital (More info?)
Canon "designed for digital" lenses which will cover a sensor the size
of a 35mm frame are pretty thin on the ground. This means early buyers
of 5D Canon DSLRs could experience "purple fringing" or Chromatic
Aberrations off the sensor's micro lenses far worse than 'crop factor'
camera users. Just using 'made for 35mm film' lenses will not overcome
the issue.
Of course all those Pro's using 1Ds Canon's and Kodak Pro DSLR cameras
already know about this effect and probably try to avoid situations
where this will occur. Pretty easy if you are a fashion photographer.
Action Photojournalists and sports photographers who often have no
choice in their subject location and buy a 5d thinking they'll get
better results will discover this problem real fast and go back to their
'crop factor' cameras.
Canon will point out (if you push them) the 5D is not a Professional
camera and they do market 2 different Pro camera so you have a choice of
which to use for what type of photography. Of course! It makes perfectly
good sense. The 1Ds for studio and controllable subjects and the 1D for
sports photographers... Now why didn't I think of that! The "s" on the
end of 1D is for "STUDIO".
The purple fringe problem occurs when adjacent photo detectors overload.
That is to say when the contrast range between the elements in a
photograph are outside that which the camera is capable of recording
detail in... Shooting a branch or building edge with bright sky will do
it as will shooting into the sun. Pretty much anything that will produce
CA in a lens, will add the sensor to the area of responsibility. CA from
the micro lenses is not yet fully understood (by me at any rate) but it
has been found to exist in laboratory tests.
Steve has some information most people should find easy to understand
(it's in picture form) about lens design to prevent or at least try to
prevent the problem ...which is currently being built into Olympus
digital lenses. http
/www.steves-digicams.com/2004_reviews/e300_pg2.html
The Canon "S" series digital SLR lenses that are suitable for 300D, 350D
and 20D won't work on a 5D. I'd expect Sigma, Tokina and Tamron "made
for digital" lenses to pick up sales as people discover these are the
only currently offered digital lenses to fit a 5D.
--
Douglas...
Have gun will travel... Said his card.
I didn't care, I shot him anyway.
1/125th @ f5.6. R.I.P. Mamiya.
Canon "designed for digital" lenses which will cover a sensor the size
of a 35mm frame are pretty thin on the ground. This means early buyers
of 5D Canon DSLRs could experience "purple fringing" or Chromatic
Aberrations off the sensor's micro lenses far worse than 'crop factor'
camera users. Just using 'made for 35mm film' lenses will not overcome
the issue.
Of course all those Pro's using 1Ds Canon's and Kodak Pro DSLR cameras
already know about this effect and probably try to avoid situations
where this will occur. Pretty easy if you are a fashion photographer.
Action Photojournalists and sports photographers who often have no
choice in their subject location and buy a 5d thinking they'll get
better results will discover this problem real fast and go back to their
'crop factor' cameras.
Canon will point out (if you push them) the 5D is not a Professional
camera and they do market 2 different Pro camera so you have a choice of
which to use for what type of photography. Of course! It makes perfectly
good sense. The 1Ds for studio and controllable subjects and the 1D for
sports photographers... Now why didn't I think of that! The "s" on the
end of 1D is for "STUDIO".
The purple fringe problem occurs when adjacent photo detectors overload.
That is to say when the contrast range between the elements in a
photograph are outside that which the camera is capable of recording
detail in... Shooting a branch or building edge with bright sky will do
it as will shooting into the sun. Pretty much anything that will produce
CA in a lens, will add the sensor to the area of responsibility. CA from
the micro lenses is not yet fully understood (by me at any rate) but it
has been found to exist in laboratory tests.
Steve has some information most people should find easy to understand
(it's in picture form) about lens design to prevent or at least try to
prevent the problem ...which is currently being built into Olympus
digital lenses. http
/www.steves-digicams.com/2004_reviews/e300_pg2.htmlThe Canon "S" series digital SLR lenses that are suitable for 300D, 350D
and 20D won't work on a 5D. I'd expect Sigma, Tokina and Tamron "made
for digital" lenses to pick up sales as people discover these are the
only currently offered digital lenses to fit a 5D.
--
Douglas...
Have gun will travel... Said his card.
I didn't care, I shot him anyway.
1/125th @ f5.6. R.I.P. Mamiya.
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