Wide Angle/fish Eye Distortion On Arw Files But Not On The Jpeg

[nellypope]

Camera/photography question. I shoot in both ARW and Jpeg format, yesterday I had to take some photos of a desk top for a client (nothing too complicated) when I went to review the photos I noticed very apparent distortion between what should be (I thought) two identical pictures. The ARW file has this fish eye distortion on it. I have never noticed it before. I only notice it on fairly close up subjects. Is there anyway round this? Do all cameras do this? I have a Sony RX100

[Zacs-Master]

When you say ARW do you mean Raw? Anyway, what mode were you in / how close to the subject?

[Zacs-Master]

I now see that ARW is Sony's Raw file type. I have no idea why this should be happening unless the fish eye is an 'effect' I.e. a deliberate Sony 'mode' which the jpeg file can't handle. You don't say what you're reviewing the image on (camera / pc using photoshop?). I believe ARW files can be difficult to open with photoshop, so maybe it (photoshop) is corrupting the file.

[Fitzer]

My guess would be that the camera is post processing the jpg knowing that fish-eye distortion will be present, as the raw shots won't have this then the distortion will be visible. I assume the software that came with the camera will be able to remove the distortion by applying the same correction, my Canon software certainly can but you have to tell it to do so.

[nellypope]

Thankyou for your for your answers, I couldn't find reference to this anywhere. The distortion only appears on the thumbnail (when in finder) and when you actually open the image in preview (I'm working on a Mac) thankfully I have found when you actually open the image in Photoshop, or the ARW file opens in Camera Raw 8.1 it must correct it. Makes previewing tricky though.