Canon 100mm L f2.8 macro_IS or no IS? Sharpest aperture?

[Cunha]

I´m using a new Canon 100mm L Macro f2.8 lens, with a tripod to shoot a square (25x25cm) print on paper on the floor for reproduction purposes. I´m also using the mirror lockup function to avoid shaking. And a Canon ETTL flash (600 EX-RT).

a) Should I use the IS lens stabilization also?

b) Which aperture is the most sharp and all in focus with this lens?

Thank you very much.

[Cunha]

5DMIII .-)

[ebiggs1]

And all this brings us to, try it and see.  As I said, you need to know what meets your needs and requirements.

Nobody here can reliably say either way because we don't know how you intend to use it.   And until your last post, we didn't know what camera.

But when all is said and done, f8 is most likely going to be your choice.  

[Cunha · Accepted solution]

"to shoot a square (25x25cm) print on paper on the floor for reproduction purposes".

😉

And yes I forgot to mention the body.

I´m testing between f/5,6 and f/11.

Since its Platinum/Palladium prints I want the best possible quality for this reproduction.

Thanks a lot for all your help.