Applying changes

[RoyalBulwell]

Hi

I can't seem to apply any of the adjustments that I make to a photo, When I go to help I type in applying å all I get is a white screen.

 

Could anyone help?.

Thanks

PS

I am on MBP

[gdenby]

Do you have a layer selected? And is the layer a "pixel" or an "image?" I don't use Photo that much, and often forget to select/high lite a layer before applying an adjustment, or using a tool like a dodge brush. Pixel/rasterized layers can have various adjustments made on them, but "images" can only be re-sized and have opacity and blend mode changes. They need to be rasterized before adjustments can be made on them.