I shoot with the Tokina / Kenko combo on my 7Ds but am considering the Canon 8-15 and Kenko for use on my 5D3 to take advantage of the better dynamic range and low light capabilty of the FX format.
I'm interested to know if the addition of a Kenko x1.4 will allow the 8-15 to zoom throughout the focal range without vignetting and how does the FOV and minimum focus distance compare with the Tokina and Kenko on DX.
I can't say that I'm particularly keen on the circular fisheye images the 8-15 produces (sans Kenko) and I'm quite happy with the Sigma 15mm for wide angle fisheye. My rationale for acquiring the 8-15 will be for shooting CFWA and with a Zen DP-100 dome on the FX format.
Many thanks, Tim
Edited by Timmoranuk, 21 January 2013 - 09:45 AM.