Here are some other, miscellaneous comments, not necessarily related to using long Canon lenses. Remember, this is all with the Metabones EF-to-E T Adapter MkV. Any other adapter might give totally different results.
Works very well with these lense:
Other pluses:
Minuses:
Works very well with these lense:
- EF 14mm f/2.8L II (in-body image stabilization is a big plus here)
- EF 24-105mm f/4L IS II
- EF 100-400mm f/4.5-5.6L IS II
- EF 1.4x TC-III
- EF 2.0x TC-III (had to manually jog focus every so often, shooting at 1,000mm)
Other pluses:
- In-body stabilization can be used in conjunction with built-in lens stabilization.
- WYSIWYG EVF (there's no excuse for forgetting to check your settings when shooting Manual)
- If there's any latency in the EVF, I'm not seeing it.
- Controls fall naturally for a Canon user (after only an hour, I didn't need to look at the back to change ISO, SS and Aperture)
- Small body is nice with smaller lenses.
- Battery life is very reasonable.
- Quiet operation
Minuses:
- If buffer fills, the camera becomes a useless brick (You need to avoid at all cost. With Canon, you keep shooting, just at a much slower rate)
- Small body is a disadvantage with a super-telephoto, requiring more grip force.
- The JPEG files embedded in RAW files are extremely low resolution, making them worthless for culling fur and feather shots. You have to convert to JPEG< TIFF or DNG to get a use preview with decent resolution.