Hello everyone,
I want to buy a panoramic head for my Sigma Fisheye 8mm 3.5 EX DG.
I’m considering to purchase a Atom 360precision head.
I can’t understand the differences between
Sigma 8mm f3.5 – GTP
and
Sigma 8mm f3.5
The first one is for Google Trusted Photographer, the second one for generic purpose. But, what the first one has special?
I wrote to the support but they don’t reply to me.
Many thanks
Piero