M8 raw file question

[ddimaria]

Hello, Does anyone know if the coding info on the lenses gets applied to the Raw file or just the jpgs? If you shoot only in RAW is there any advantage to coding your lenses?

Thanks All.

 

[afineman]

The coding is in the file info of both RAW and JPG files. The only advantage that I have found is on the very wide lenses 15 & 21mm with the IRUV filter. The coding helps reduce cyan vingetting.

-Aaron
www.aaronleefineman.com

 

[jaapv]

It corrects "normal" vignetting as well, when lensdetection is enabled. The corrections are applied to the RAW file.

 

[boilerdoc2]

It's a big help on wides and the Noctilux. Corrects the vignetting in the corners- both cyan shift (with the IR filter on) and normal fall off of light. Longer lenses? No difference in quality, it just IDs the lens in your EXIF file.
Steve

 

[zeitz]

There could be a difference. With JPEG, the camera applies the correction and it is permanently in the .jpg file. With RAW, the RAW conversion software applies the correction on the computer. I would assume Capture One and Photoshop CS2 and CS3 would apply the same correction if they have latest M8 profiles. The original Photoshop CS does not have an M8 profile (that I have ever found) so a generic .dng profile is used. I doubt the generic profile applies the coded lens correction.

The problem is that it is hard to know what each raw converster does. In the end they are each different, and no information seems to be available to the user.

 

[sandymc]

There could be a difference. With JPEG, the camera applies the correction and it is permanently in the .jpg file. With RAW, the RAW conversion software applies the correction on the computer.

No, with raw the vignetting correction is also applied "permanently". the raw converter has no role in that.

Sandy