How does LightZone open RAW files


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leahcimi
How does LightZone open RAW files

Being relatively new to LightZone and having recently discovered that it does not correct RAW files for Barrel/Pincushion distortion, I thought I had found a workaround but it does not work and I can't see why.

 

I have an image taken with my Canon S95 at wide angle and it shows Barrel distortion. I opened the image in Canon's Digital Photo Professional, corrected the distorion and saved the CR2 file. If I reopen the file in DPP, sure enough it is corrected. If I view the file with FastStone Image Viewer it is shown corrected but if I open it in LightZone, it is still uncorrected.

 

Can someone explain why please?

 

SFA
The RAW (CR2, etc) files are

The RAW (CR2, etc) files are never changed in LZ.

 

I think the same is true for DPP although I have not used it for a long time. However RAW files tend to have embedded jpg thumbnails as created in camera and so these are created with existing presets/lens correction from the camera. They are not totally untouched raw data files. I think this is what FastStone uses for its image viewer. If it corrects directly from the file I would be surprised as Lens correction does not seem to be mentioned anywhere on the product - or at least the version that I have does not mention it nor does the latest information on the web page.

 

LZ does not use the "in camera " adjustments and starts from the RAW file (as do most RAW converters although these days some make use of lens correction information embedded in the file if there is any).

 

HTH.

 

 

Grant

 

 

leahcimi
I am indebted to you for your

I am indebted to you for your explanation yet again Grant.

 

Many thanks.

waltherv
can't get the raw file showing up

hello just started with lightzone, looks great but when I open a raw file in lightzone, it will show as a jpeg (above is says csc00044.jpg in stead of .raw)

maybe somewone can tell me were I go wrong.