Problem with the Develop Persona

[Floriance]

Hi! Just starting with Affinity Photo. I faced an interesting problem. If I select a photo from my laptop, and open with -> Affinity Photo. After opening I can edit with Develop Persona, or Liquify. But If I will import picture with Edit, Place.. and bring the same image, I cannot use those personas but only getting a failure notice "Please select an RGB pixel layer before entiering develop" What's the difference, why? Never mind if with placed picture I select a layer or not, the result is exactly the same. This is a problem if I want to place two different images into a document but fine tune only the other one, at the moment I cannot do it because of that mentioned issue. What can I do?

 

[Old Bruce]

Both photos are Image layers, I would duplicate them then rasterize the duplicates. You don't have to duplicate first, I just do that out of an abundance of caution.

[v_kyr]

Via place in it's an (image) layer, you have to "rasterize" that layer first (right click on it in the layers panel and select rasterize from the shown menu entries). Rasterizing converts the image layer into a (pixel) layer.  Now when it is a pixel layer, select it and access the Tone Mapping Persona!

[Floriance]

Thanks for the both answers. It works now 😀