color change

This is probably a colourspace issue,

or your images may be using a different colour model - incoming RGB and the destination file CMYK, converting from RGB to CMYK can cost saturation

check the ICC profile of the source images and of the destination file. 

the document info pane at bottom left can be set to ICC profile.

The ICC profile tells Photoshop how to interpret the colour numbers in the file. Its important.

They files colourspaces to be the same or colour can be misinterpreted.

If they differ and your destination colourspace is what you need, then the incoming files need to be converted [image/mode/convert to profile]

OR maybe your destination space can be set to be the one used by the incoming files, then no change would be needed.

Otherwise its like parting English text into a French document, it doesn't fit. Needs translating.

I hope this helps

if so, please "like" my reply and if you're OK now, please mark it as "correct", so that others who have similar issues can see the solution

thanks

neil barstow, colourmanagement.net :: adobe forum volunteer

[please do not use the reply button on a message in the thread, only use the one at the top of the page, to maintain chronological order]

What are the embedded profiles in the Images?  What is the color space? (RGB CMYK etc) 

What are the Color Settings in use (RGB and CMYK profiles)? 

Could you capture your entire screen with the layers panel open so we can see what is happening?

My guesss is the the layer the image is on is set to a blend mode other than normal, or when selecting the image it is missing data (small holes in it) to allow the white show through.

There are other possible scenereo's but with out seeing the screen it is hard to narrow it down.