Yes it is.
This goes all the way up to 1200 x 1200. View large if you dare.
I finally got sick of being curfubbled by Terri's G12. I couldn't get it to focus on a fly that was on the end of a stick, so I went and bought a cheapy 50mm lens to go with the extension tubes and they seem to be working out fine. Still can't wait to get my big lens back though.
Thanks for all the comments and favs on last night's pic. I was chuffed.