Lens Correction: Unsupported File CR2, Canon 5d mk ii

gregger1

• 2011年01月16日 19:30

Hi there,
I am trying to correct some pincushion distortion in some wide angle pictures. I have noticed that none of my 16-35mm lens pictures can be corrected while some other pictures (using other lenses) allow me to do Generic pincushion correction.

All my 16-35mm pictures (e.g. the ones that matter) say "Unsupported File".

It appears to be the lens I'm using (I thought it was the new firmware version v2.0.😎.

So far these lenses say "Unsupported File":
Canon 16-35mm f/2.8 L II (this is the only one I care about)
Canon 135mm f/2.0

These are OK:
Canon 24-70mm f/2.8
Canon 50mm f/1.2 II

The Keystone tool only sort of works for what I need.

What can I do?
Thanks,
TTFN
Gregg

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  gregger1

  • 2011年01月18日 21:25

  Update:
  The answer from support is:
  Don't shoot in anything other than full RAW format.
  
  I had shot the picture in SRAW1 because it was going to be highly noisy (low light). SRAW1 lowers the density of the sensor and can result in a bit better noise performance.
  
  So evidently, there is no pincushion recourse possible. This seems a little weird to me, but I don't know how this feature actually works.
  
  Maybe someone else here has some experience? Or am I basically S.O.L.?

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  Paul Steunebrink

  • 2011年01月18日 22:01

  The lens correction feature is a specific trick performed on the raw file. This is created into Capture One for each type/model raw file individually. The smaller raw files like sraw and mraw are considered less high performance file formats, hence these advanced tricks are not brought into these type of files. (my explanation might not be 100% technically accurate, but I think I come close)
  
  So, if you want all the bells and whistles from your raw file like lens correction, full raw is your way to go in Capture One.

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  gregger1

  • 2011年01月18日 22:08

  OK, thanks... lesson learned and image lost.
  
  Will keep that in mind with wide angle shots!
  TTFN
  Gregg

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