A problem of photoshop that an image convert to profile

[Qtong]

Does anybody know following?
I try to convert an image to profile for two different Dot gain setting ( Abode Photoshop).

Results:
- Dot Gian 8% 》》》Converted picture looks dark.
- Dot Gain 15%》》》Converted picture looks bright.

I think that Dot Gain big, the dots also will follow. Why do i get the results from Photoshop is opposite?

Any help would be greatly appreciated.

Thanks,
Qtong

 

[Ozkan Hangisi]

Does anybody know following?
I try to convert an image to profile for two different Dot gain setting ( Abode Photoshop).

Results:
- Dot Gian 8% 》》》Converted picture looks dark.
- Dot Gain 15%》》》Converted picture looks bright.

I think that Dot Gain big, the dots also will follow. Why do i get the results from Photoshop is opposite?

Any help would be greatly appreciated.

Thanks,
Qtong

It sounds normal. You mentioned how much dot gain you have in printing conditions. If dot gain is less Photoshop adjusts CMYK values higher in midtones. If you really have a profile which has created with 8% TVI printed sample and you assigned that profile, your image would look ok.

 

[Lukas Engqvist]

That is the assigned profile for the image? Also how you choose to display your colours… if you are displaying with "preserve values" then you are not seeing at the profiles dot gain but at the working space dot gain.
If the image has no profile converting to a profile will assign a profile.
It sounds as if you have a standard dot gain of 12% or something, since 8% dot gain will not have as high TVI photoshop converts the images to darker colour, then displays at 12% dot gain your image seems darker… if you print it at 8% dotgain it will look normal.
Likewise if you convert to 15% you image will lighten to compensate for the swelleing, or TVI, but if you view this at 12% dot gain your image will look pale (this will be especially true in lighter colours (0-30%)