Print photos with mac doesn't take full page

Based on the picture of the print taking up only half the sheet, the only thing I can think of is to check whether Pages Per Sheet is set to 2 in the Layout settings. It should normally be 1.

Also-

Set Margins to 0.00

Set Cell Size sliders to Maximum

More than likely the Dimensions of the image file doesn't fit properly on a 8x10 piece of paper.

8" x 10" paper is a 2.5:2 ratio. Most cameras take 3:2 or 4:3 ratio images and those don't fit on a 8 x 10 inch piece of paper so there is always some area left over.

If you click the Page Setup button near the bottom left corner, does it say Any Printer, or does it say the name of your printer with the correct Paper Size?

In the future, So people don't have to download the image you have attached, please use the Insert Photos icon found in the Tool Bar of the Post and Reply text entry dialog window as pictured below.
Since you Can't Edit your original post to remove the Attached screen shot Please include the screen shot you attached to a new reply to this conversation by clicking the Blue Reply button under your original post and use the Insert Photos icon in the tool bar.
The Insert Photos icon is this one in the Tool Bar.


Thank you.