Nikon Coolpix L620 Reference Manual page 197

Problem
Cannot select paper size
with camera.
Cause/Solution
The camera cannot be used to select the paper size in
the following situations, even when printing from a
PictBridge-compatible printer. Use the printer to
select the paper size.
The printer does not support the paper sizes
specified by the camera.
The printer automatically selects the paper size.
A
71, E26,
E28
–
F15