RLight wrote:
Larry Rexley wrote:
R2D2 wrote:
RLight wrote:
If AF is a concern, you should have a hard look at the M6 Mark II
+1 Using Spot AF with Servo (doing the tracking myself), I’m confident that I could shoot anything on the planet with an M6ii. The (Spot) AF is lightning fast to acquire, and sticks like glue. Here’s a previous thread that details some of what it’s capable of…
I have found a case where the M6ii with spot AF and servo cannot reliably track and shoot... an Amtrak train moving towards you at 70 mph!
I have tried this multiple times, and most of the time the M6ii can't even lock on the nose of the train when its 100-200 feet away, either in spot or single-point AF. The train appears to be moving just too quickly. I have lost entire sequences as the M6ii sometimes never even locks on the train and the shutter won't fire.
In 'Tracking' AF mode with servo on, it works brilliantly. 14 fps drive mode - and every frame is sharp. The M50ii could do this as well in AF tracking mode.
https://www.dpreview.com/forums/post/64108171
IMHO RLight’s evaluation is right on the money.
R2
Side question; with the EF-S 55-250 IS STM in use?
I ask as I recently had a theory about AF and non-EF-M glass. Not adapted, just not EF-M, less pins, less bandwidth...
Nope. The extra pin is just an extra ground. Inside the EF-M adapter, two of the M ground pins get merged into a single EF ground pin. It is basically just a 5 pin serial connection for communications with the other pins providing power for the AF and IS motors.
AF on the EF-S 17-55mm f/2.8 IS USM was quite spotty, mind you this is both an IS enabled and USM driven lens. It was spotty on both the M6 II and M50 II, the former has more power, faster readout, the latter less battery power (USM is hungry) but slower readout, but newer software. I'm starting to think AF on adapted lens doesn't drive as well as native full pin EF-M glass.
More likely you are just witnessing the effects of an older lens that was designed over 15 years ago.