My posted image looks totally different on another PC

[Pete Presland]

I posted an image of Venus in the Planetary imaging section recently. When i had a few spare moments at work i had a look at the thread and the image looked very different on the works PC.

This seems like a possibly a monitor calibration issue, but which monitor mine or the works PC.  The image looks like its badly "clipped" and lacking any detail.

Any suggestions? it was a PNG file, i look on my tablet as well.

[wxsatuser]

Looks ok on both my laptops.

[Pete Presland]

1 hour ago, wxsatuser said:

Looks ok on both my laptops.

Thanks,  it will be interesting to hear what others see on their set ups.

[wxsatuser]

I have looked very close and there is a wavy ring like pattern above the terminator.

Is this a processing artifact or a result of the PNG?

Apart from that at normal resolution there seems to be light and dark areas, Venus surface markings, may be.

[RichM63]

On my main high resolution 29" screen the image seems to have concentric dark banding parallel to the terminator.

At slightly lower resolution on a 24" screen the banding is not so obvious.

[spillage]

In reality this will drive you made. I have always thought that if it looks okay on my aged kit then "that will do pig". It take me long enough to get it to the point I am prepared to post an image and once that decision has been made I move on. Now if only I could find a clear enough nigh to capture some more data.

[kirkster501]

Getting the colour gamut and colour profile exactly right on your PC is a science in its own right with hardware calibration and software commercially available.  Even then, you may not get the correct colour calibration.  This is why professional monitors, that can cover 99.99% or even 100% of the colour space accurately for commercial photo and video work cost thousands.

[fireballxl5]

nice 27" IPS monitor here and I see dead people sorry an obvious halo around the terminator?

[vlaiv]

There is a simple thing all can do to test their monitor (or multiple monitors if they suspect that it's throwing a wrong picture), just use some sort of online test / calibration tool:

a simple one:

https://www.photofriday.com/info/calibrate

a complex one:

http://www.lagom.nl/lcd-test/

There is builtin windows tool for actually calibrating display - it works well (for those that use Windows, I'm fairly certain that there are suitable alternatives for other platforms as well).

 

[happy-kat]

I'll try that later, thank you for the links.

[happy-kat]

I just looked at the first link and no adjustments are needed this monitor is already showing everything. I had tuned it using the scale on DPreview when we first set it up, took some delving into the graphics card settings but it worked OK. As a trial I have knocked 3% of the brightness scale.

[Pete Presland]

On ‎26‎/‎01‎/‎2019 at 12:17, vlaiv said:

There is a simple thing all can do to test their monitor (or multiple monitors if they suspect that it's throwing a wrong picture), just use some sort of online test / calibration tool:

a simple one:

https://www.photofriday.com/info/calibrate

a complex one:

http://www.lagom.nl/lcd-test/

There is builtin windows tool for actually calibrating display - it works well (for those that use Windows, I'm fairly certain that there are suitable alternatives for other platforms as well).

 

Thanks @vlaiv for the links

I used the top one to adjust the brightness of my screen slightly, I wasn't able to adjust the contrast though. There didn't look to be an option for contrast on my Toshiba laptop. I think I might have opened a can of worms for myself though.

I have posted a new image, after adjusting the screen brightness.

[vlaiv]

1 minute ago, Pete Presland said:

Thanks @vlaiv for the links

I used the top one to adjust the brightness of my screen slightly, I wasn't able to adjust the contrast though. There didn't look to be an option for contrast on my Toshiba laptop. I think I might have opened a can of worms for myself though.

I have posted a new image, after adjusting the screen brightness.

What OS are you running on laptop?

Windows has embedded color management, so you can adjust color correction (gamma, brightness, contrast, as well as font rendering and such), so you might give that a go?

[Pete Presland]

5 minutes ago, vlaiv said:

What OS are you running on laptop?

Windows has embedded color management, so you can adjust color correction (gamma, brightness, contrast, as well as font rendering and such), so you might give that a go?

Its windows 8.1 Vlaiv

[vlaiv]

6 minutes ago, Pete Presland said:

Its windows 8.1 Vlaiv

Have a look here then:

https://www.digitalcitizen.life/why-how-calibrate-monitor-windows-7

It describes how to access this for Windows 7, 8.1 and 10, and gives quick overview of what is involved.

[vlaiv]

Actually, since you will need both brightness and contrast settings, have look if this helps also:

https://smallbusiness.chron.com/adjust-contrast-toshiba-netbook-42594.html

It says that contrast can't be adjusted via keyboard shortcuts but depending on processor type, you will have contrast setting in graphics adapter section (like Intel or AMD integrated graphics, or something else).

[Pete Presland]

Brilliant @vlaiv that looks much better when viewing the Photo Friday calibration screen.