Luminous Landscape Forum

Raw & Post Processing, Printing => Digital Image Processing => Topic started by: PeterAit on November 28, 2014, 06:10:55 am

Title: Strange image corruption in some photos
Post by: PeterAit on November 28, 2014, 06:10:55 am

My wife uses a Nikon CoolPix L820 and she is seeing an odd artifact in some of her photos (JPEGs). A horizontal strip of the image will be shifted to one side so that elements in the image do not line up properly. In the screen shot below, the two points "A" should line up as should the two points "B" - the lower strip has shifted to the left and "wrapped around" to the right. Also, in some cases a horizontal strip will just be blank, as at the bottom of this photo. This happens rarely, 99% of her photos are fine. Any idea what causes this, or how to fix it (other than laborious cut and paste in Photoshop)?

Title: Re: Strange image corruption in some photos
Post by: Bart_van_der_Wolf on November 28, 2014, 08:41:23 am

Quote from: PeterAit on November 28, 2014, 06:10:55 am

Any idea what causes this, or how to fix it (other than laborious cut and paste in Photoshop)?

Hi Peter,

Some electronic glitch in the firmware routines that write to card?  Is the camera firmware up to date?

The Photoshop fix is not all that laborious though, make a rectangular selection of the bottom offset portion, and use the Offset filter (Filter>Other>Offset...) with wrap-around.

Cheers,
Bart

Title: Re: Strange image corruption in some photos
Post by: EduPerez on December 02, 2014, 06:02:03 am

I would try using another memory card, preferably from a different manufacturer.

Title: Re: Strange image corruption in some photos
Post by: langier on December 02, 2014, 06:09:54 pm

I've had this issue and worse…always seems to be a card issue and sometimes happens when they get filled to the brim.