Yannig

Well... Still looking for the best WA to shot in Cenotes both photos and videos and I recently thought that maybe the Canon EF 24mm f/1.4L II USM could finally be enough wide with the FF of the 5DIII...? Really straight, fast (not really important in Cenotes but for widelife sometimes it can be a real advantage I think...),... Any idea and comment about that choice ?

Physical vignette free from +14~15mm on FF and +10~15 on APS-C.

Nice shots !

Physical vignette free from + 14-15mm on FF for vidéo means that the effect will be more WA or Fisheye ?

Thanks a lot for your answer!

From the time I created this topic and after many search here and elsewhere, I choose to go on a 16-35 II wich I'm gonna add a Zen 230mm I think. I'm just still hesiting between the 200mm and the 230mm...? And also, I don't know yet if I need to add an extension to this couple ? If you have an idea ?

Also I still want something wider and I was going on the Sigma f/2.8 FE that I know I can use with the Zen Dome (I saw Alex M shots on his try of the D800). I still have to check at wich extension I need to add it with the 5DMIII ? If you have an idea about it it would be very welcome !

In another way, I was considering the EF 8-15mm f4 USM. Quality seems very good even if it doesn't seem more good that the Sigma at 15mm that is the focale that is interseting me and then a lot more expensive. The only thing that could interested me with that lens vs the Sigma could be if I could add a 1.4 convertisseur to it and if by adding this convertisseur I could get sharp ultra WideAngle from 13, 14 or even 15mm to...? Could it work like that or that idea is simply stupid ?