What sort of camera uses this lens?
From the reviews that I've read, lens distortion, chromatic aberration, purple fringing, are corrected "in camera". Hence no lens profile.
is profile "Samsung 16-50mm F3.5-5.6 Power Zoom ED OIS Samsung 4.0/7.0"
and the images from camera at wide angle (16mm) have a distortions:
I am aware of the web page contents. I am using LR5.7.1 and that particular profile is not present, why, I don't know. My previous post alluded to reviews that I had read. I have to take them at face value. Maybe Adobe will provide a profile in the future.
The lens profile is built in for Mirrorless cameras, nowadays. Here is another raw image sample I downloaded from PhotographyBlog that ACR 8.8 shows has a built-in profile applied:
Adobe tries to simulate the distortion correction that the camera has so if there is some residual distortion the camera JPGs likely show the same.
Here is what the sample raw file looks like without any built-in distortion correction which is not all that much different but there is some:
If you feel that there should be more correction then what do camera jpgs show for the distortion correction? Please post a raw + jpg of your image, above with the grid on the monitor for comparison. You can use something like www.dropbox.com if you don't have your own large-file-hosting server.
Thank you for your analysis.
- JPG images are corrected in camera
- SRW images have built profile
- the information in the list https://helpx.adobe.com/x-productkb/multi/lens-profile-support-lightroom-4.html
is little misleading because suggests there is a profile for Samsung 16-50 lenses
I tried to make a 3 profiles in a Adobe Lens Profile Creator 1.0.4 for 16mm, 26mm and 50mm (but it was very amateur work, so I don't guarantee the quality)
Here is a result:
before correction (16mm):
The information is confusing but it is from when Adobe was just starting to have built-in profiles and they hadn't figured out what to say and not say. It soon became clear that there would be many cameras (mirrorless became popular) with built-in profiles and they quit putting those on the list. It is also possible that it is on the list because Adobe had to create a profile rather than it coming from the camera manufacturer like subsequent profiles possibly have.
It wasn't until ACR 8.4 that there was any information about that a built-in lens profile was being applied, but since it is only in the PS plug-in, it is still confusing to LR users. I am hoping that LR 6 will include a reworked lens-profile area that indicates a built-in profile is used.
I think there is probably a mistake in the profile for this lens and it'll be fixed in a subsequent update from Adobe.
Your lens profile looks to be doing a reasonable job.