AGeoJO wrote:
Both versions of Metabones can be updated to the latest firmware and if both use the exact same firmware, there is no difference in the AF performance between the two whatsoever. However, there are 3 physical differences between the two. The first one, and I think this is a major one since I use it quite a bit, is the size of the rear throat of the V is larger than that of the IV and as such, it can accept a Sony FE TC to be mounted in the rear. You can extend the focal length of the Canon-mount lens you use in the front of the Metabones V adapter. Canon lenses that normally cannot be used in combination with a TC can get its focal length extended that way, be it by 1.4X or by 2X, depending on the Sony FE TC being used.
The other two differences are minor although convenient to have. There is a physical switch for the IS and there is an LED indicator that tells you the mode of the adapter is in. You can find out at a glance the mode, either the green mode or advance mode, in other words.
golfnphotog wrote:
Just to clarify......Can I mount my Canon 100-400 attached to the Canon 1.4X III using the MB-IV adapter on the Sony A7RII?
Thank you,
Yes, you can. Operate the MB adapter on the green mode and you rely on the phase detection system of the camera. A word of caution, the A7r II is an older model with less responsive AF system. It will work fine for stationary targets but it will have a tough time with tracking. Actually, in a burst mode, the first frame is okay but the subsequent images may not be in focus if the target leaves the focusing plane. I hate to tell you this but your best bet to get it to work better would be with the A9.
I have both adapters. I don’t notice a difference in their performance. I only shoot in Green mode. If you get the IV, make sure you get the “T” version with the flocking so as to eliminate reflected light bouncing off the inside of the adapter.
I have the 16-35/4, 24-70/2.8 II, and 70-200/2.8 II. My 24-70 and 70-200 work great. The 16-35 works well generally, but hunts in very low light. This performance is consistent with the A7R2 and A7R3, although the 3rd generation E-mount cameras work better than the 2nd generation cameras.
AGeoJO wrote:
Yes, you can. Operate the MB adapter on the green mode and you rely on the phase detection system of the camera. A word of caution, the A7r II is an older model with less responsive AF system. It will work fine for stationary targets but it will have a tough time with tracking. Actually, in a burst mode, the first frame is okay but the subsequent images may not be in focus if the target leaves the focusing plane. I hate to tell you this but your best bet to get it to work better would be with the A9....Show more →
I used to shoot BIF with the A7R2 + Canon 100-400 II and 500/4 II + 1.4x. The biggest issue is EVF blackout because once you pull the trigger for continuous shots, you cannot track the subject through the viewfinder. The A7R2s AF tracking is poor, too. You can pump the AF button (if you back button focus) to compensate, but it’s a hassle to do this. The A73, A7R3, and A9 solve these issues, although the A9 is the best option.
scrappydog wrote:
I have both adapters. I don’t notice a difference in their performance. I only shoot in Green mode. If you get the IV, make sure you get the “T” version with the flocking so as to eliminate reflected light bouncing off the inside of the adapter.
I have the 16-35/4, 24-70/2.8 II, and 70-200/2.8 II. My 24-70 and 70-200 work great. The 16-35 works well generally, but hunts in very low light. This performance is consistent with the A7R2 and A7R3, although the 3rd generation E-mount cameras work better than the 2nd generation cameras.
AGeoJO wrote:
Yes, you can. Operate the MB adapter on the green mode and you rely on the phase detection system of the camera. A word of caution, the A7r II is an older model with less responsive AF system. It will work fine for stationary targets but it will have a tough time with tracking. Actually, in a burst mode, the first frame is okay but the subsequent images may not be in focus if the target leaves the focusing plane. I hate to tell you this but your best bet to get it to work better would be with the A9....Show more →
