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Strange lines

Hello, i just reinstaled windows and photoshop, and now when i try to save a png (that looks ok) into a jpg, the jpg photo has some strange grey lines some wider some thinner. Please does anybody has any advice? Thank you.
Camera: - Nikon D810
Posted: 01/28/2012, 09:04:41 AM
Are they straight lines or lines that contour with the gradient change in light? Contoured lines are called BANDING and you can find various tips on Google for removing them. Very frustrating, though.

Since you reinstalled windows I am wondering if it's possible there is an issue with the graphics interface. You can try viewing the image on different computers and seeing if the lines "travel" with the image. If not then you will need to adjust your monitor settings.
Nikon D800, D100, Canon G15
Edited: 01/29/2012, 09:46:48 AM
Thank you for your answer, yes there are lines that appear where there is gradient...but in the mean time i had found another way...i save the files from adobe bridge and they are ok, if i save them in photosop, paint or any other software...those lines appear.
Camera: - Nikon D810
Posted: 01/29/2012, 16:22:00 PM
Im looking for a high resolution pic of chicken & waffles
please email it to me or let me know where I can find one. email address removed by admin. Please do not disclose your contact details on the message board, nor request to be sent images by email. We have a thread which you can use for photo requests here
Edited: 01/31/2012, 08:47:05 AM by Admin
Pymony, you should post your request in the "Photo & illustration requests" board, not here.
mm, Sigma 105 mm macro...
Posted: 01/29/2012, 20:51:26 PM
Chicken and waffles same photo? or two different ones?
Canon bodies and lenses.
Posted: 01/29/2012, 21:30:58 PM

I've also had problems with gradient banding but in my case this effect is accentuated also because of my monitor calibration.
I usually solve this with blur (not to much because is possible you will get some distorted pixels), noise and after that i downsample a little bit the image.
Even if i reduce them i still see the banding on my monitor at home, but if i check the same image on another monitor, they look fine.
Elinchrom D-Lite4 To Go
Edited: 01/31/2012, 08:02:52 AM by Admin
Thank you Andreea
Camera: - Nikon D810
Posted: 01/31/2012, 09:29:53 AM