Easiest way is to actually use Image Capture instead

You can use it to Import too, to any app that can import pictures, or to a folder location.

Select any pictures you wish to delete & hit the 'no entry' sign to trash from your device

Easiest way is to use Image Capture from OS X

You can use it to Import too, to any app that can import pictures, or to a folder location.

Select any pictures you wish to delete & hit the 'no entry' sign to trash from your device