I have a jpeg 8bit picture. I want to make some changes and make it bigger. Would the quality get better if I open the 8bit jpeg, convert it to 16bit and save it as tiff before I start making changes?
Any thoughts?
- A
#1
Would the quality get better if I open the 8bit jpeg, convert it to 16bit
No. You can't create what's not there.
#2
You could perhaps argue that a 16bit image will give you more latitude to make changes later, but "the quality" will not "get better."
#3
Hi Ramón, thanks for your answer!
#4
Actually I just had a case where it was usefull: A 8-bit-rgb-picture was massively blown up and then blurred for a background and the separations showed bad posterizations; with the blur done in 16-bit the additional steps really smoothed things.
But this should apply only if additional steps are created (like with a blur).
#5
or you could just ad noise
#6
Sometimes the amount of noise necessary to effectively mask those effects might seem a bit steep though.
#7