posterisation (or maybe noise) with Nikon D70s

[iremharnak]

Hello everyone,

 

I am studying commercial photography and I bought a Nikon D70s

before starting the course approximately 3 months ago.

I see something that looks like posterisation or noise on the photos

I took in the studio. It looks like waves of tones or pixels in the

dark areas (grey or black background)around the subject (both in

portrait and product photos). I can see it on pictures taken with

200 or 400 ISO. So I assume it is not noise related to higher ISO. I

looked at those images on MAC and PC monitor to compare and only

realise the posterisation on the MAC monitor.

 

Since it happens indoors, I shot examples with different ISO's and

RAW yet these examples weren't done under studio light. And there is

no problem with them.

 

I am a bit confused. I would like to know if anyone has encountered

a similar problem and what would you recommend me to do?

 

Thank you so much in advance!

Irem

[gandicarter]

Since you don't see it on one system, I'm included to think it's not the camera but the monitor/software.

 

I have the same kind of problem with my laptop. It's because the LCD is using only 6 bits/colour rather than the usual 8 bits/colour.

 

Your problem could be the monitor itself or the way the program is converting the sRGB colour profile to the monitor's profile or it could be the graphics card or one of many things I haven't thought of.

 

 

Gerald

[jason_nordgren]

Have you checked to make sure that the Mac display is set to millions of colors? If it is not that would probably produce the results you describe. At any rate since you don't see it on a PC I would agree that it is something in the software/hardware of the Mac that is causing the problem and not your camera.

[iremharnak]

Thank you for your responses. I will check my Mac monitor. I also wanted to add the fact that my PC monitor is really old so I can't really trust in the quality of it.

I also shot in RAW under the same studio conditions, there is less posterisation yet when you zoom in you can see a little bit. I will also print out a 4 by 6' sample to see if it is visible on the paper.

 

Thanks a lot!

Irem

[craig_ohara]

Hi, just wondered if you solved this problem as I posted a similar one with a picture under"steps of light/posterisation recently and am still baffled

[iremharnak]

Hi,

 

I posted this message a while ago, I didn't know the camera well and was using weak hot lights in a studio. So there was noise in the areas that weren't well lit. When it's printed 8x10 you couldn't see it.

 

 

So it was inexperience coupled with low light conditions in my case :)