I've seen (some times ago) a presentation where the editor was initially working in Camera Raw with a new (original) foto. During the modifications in Photoshop he went back to Camera Raw, edited some parameter settings, went back to Photoshop. He made this switching between Photoshop and Camera Raw a few times.
Which command has been used for this switch?
Thanks for your help
If you open a raw file in Camera Raw and choose the Open as Smart Object option on the ACR Workflow options, you can have the raw file embedded in a Photoshop files which allows reaccessing the raw image in Camera Raw. Note, there are some things you can't do with a Smart Object such as paintinng on the layer and the PSD file grows rather large, but using Smart Objects can be useful.
Open as smart Object Layer use the shift key open in Photoshop button will change to open Object. Once in Photoshop you can use men Layer>Smart Objects>New Smart Object via Copy to create addtional independent smart object layers. Double click one of these layers smart Object Icon in its layer in the layers palette will reopen the embedded copy of the RAW file in ACR where you can change the conversion settings. When you then click on OK the original smart object layers embedded object will be updated as will the rendered pixels for the layer. You can then blend different RAW conversion to together to bring out greater detail in an image.r