Timeline for How can I tell if my Sony ILC is applying lens corrections to in-camera JPEGs?
Current License: CC BY-SA 3.0
11 events
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| Aug 12, 2017 at 8:08 | comment | added | Michael C | You should be able to look at it and tell if Vignetting or CA have been applied or not. | |
| Aug 12, 2017 at 8:07 | comment | added | Michael C | If it says 'None' it did not apply the correction. You can set the parameters to 'On' or "Off', rather than 'Auto' and then you would know for sure. | |
| Aug 12, 2017 at 8:05 | comment | added | feetwet |
The example I'm looking at was produced from EXIFTool. So, at least in the case of Sony, it appears that one would have hunt down some specs I have never seen to determine whether corrections were used. For example, also found by EXIFTool in this example: Vignetting Correction: Auto, Lateral Chromatic Aberration: Auto. Based on these and the values in my earlier comment, it appears that we can't tell whether CA or Vignetting corrections have been applied. Rather, all we can be sure of is that the camera has not applied Distortion Correction (but could have)?
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| Aug 11, 2017 at 22:37 | history | edited | Michael C | CC BY-SA 3.0 |
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| Aug 11, 2017 at 22:31 | history | edited | Michael C | CC BY-SA 3.0 |
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| Aug 11, 2017 at 22:20 | comment | added | Michael C | "Or what software can apply or unapply those parameters?" The actual correction profiles aren't included in the EXIF info, only whether you used them or not when the photo was taken. The camera stores the profile for each lens in its memory (assuming either you have loaded it or the camera came with it preloaded). If you use an application to apply correction after the fact a profile for that lens/camera combination must be contained in the app. The two profiles (one that the camera has, the other that the app has) may or may not be the same. It just depends on where each profile came from. | |
| Aug 11, 2017 at 22:14 | comment | added | Michael C | @feetwet what application did you use to query the JPEG referenced in your above comment? | |
| Aug 11, 2017 at 20:12 | comment | added | feetwet | So ... are the "correction parameters" I found non-standardized EXIF info? Does their presence mean that those corrections were applied by the camera? Or what software can apply or unapply those parameters? | |
| Aug 11, 2017 at 20:03 | comment | added | Michael C | The problem with LR is it ignores a lot of the EXIF info located in the non-standardized 'maker notes' section. The names of the EXIF fields in the maker notes section will be specific to a particular manufacturer, a specific camera model, or even a particular firmware version for that model. Because they are non-standardized fields the manufacturer can put whatever they want there. | |
| Aug 11, 2017 at 14:31 | comment | added | feetwet |
What EXIF fields will inform us of corrections that have been applied to the file in question? E.g., I queried a JPEG and I see things like Distortion Corr Params Present: Yes, and Distortion Correction: None. Plus there are Distortion Corr Params, Vignetting Corr Params, Chromatic Aberration Corr Params ... so it appears there are a lot of correction data present, but not applied? And is it obvious how to tell Lightroom to apply these parameters?
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| Aug 9, 2017 at 5:12 | history | answered | Michael C | CC BY-SA 3.0 |