I'd like to use PSD file.

[chuangm15478143]

When I jump to Photoshop from Lr (not Lr classic), can I chose PSD type ?

Because TIFF is too big. 

[99jon]

In Photoshop use the menu:

File >> Save As

Then choose PSD from the top of the list of file formats.

Click Ctrl+W (Cmd+W) to close the PS document or click the X symbol.

[chuangm15478143]

Thanks for your answer. It worked.

I would like to make sure,

When I jump to Photoshop, Lr convert the file to TIFF automatically at the first time. Can I chose the file type in Lr? (Like Lr classic)

[99jon]

Maybe you are using Classiic?

[Theresa J]

Your screen capture shows that you are using Classic, not Lightroom. Also, a PSD isn't going to be smaller than a TIFF so it's not really clear what you are trying to do or why.

[chuangm15478143]

I know my screen capture is Lr classic.

Because in Lr classic, I can chose the file type , so,  I want to find the same setting in Lightroom.

Then I can get the PSD in photoshop at the first time. (Not open a TIFF ,  save as a PSD)

But, another question. I always thought that a PSD is smaller than a TIFF.

I compared the same photo saving as different type, tiff is biger than PDS. 

Is my idea wrong?