On a FF camera, I would say the 15mm SIgma would be pretty good.
On the other I also tried a 60mm into a dome that helps you keep a wider angle
I have shot rhinos with many lenses but only DX format see how they go :
With a 100 mm, this is the most useless lens I hate to see a rhinopias when I have my 100mm on. I had three in different ones in Ambon while I was stuck with a 100mm.
Now this is shot with a 60mm and flatport, Better for geting close in Alor
This one with a60mm flatport was more comfortable to shoot but the juvenile rhino from Padang Bai was much smaller, thus the lens totally appropriate
This one with a 60mm and Zen minidome
For the wider angles, this is a classic combo with a Tok 10-17 behind a Zen Minidome. I was lucky with 4 rhinos on this dive in Padang Bai.
Same dive using the Tok 10-17:
I sometimes used a Tok 10-17 with a Kenko 1,4 CFWA adaptor behind a Zen minidome, it does a great job for this size of fish, but the AF can be painful. .Here in Ambon.
And a very special combo using the Inon "insect eye" lens, In Tulamben Bali.
Edited by Luko, 02 February 2018 - 12:11 PM.