1D MKIII Battery and Weather Resistance and focus ...

Just shot the first wedding of the season for me this past weekend. This is in Seattle, and for those that've been around ... the weather has been CRAZY.

Literally, one moment it was close to 70 and sunny, then in 30 minutes it started raining, then snowing, and back to 70. My MKIII got sun, rained on, and snowed on, all in span of 8 hours. Temperature went from close to freezing to 70. Unbelievable.

How did it do? It didn't bat an eye and kept on clicking. I was worried going into this weekend because of the error 99 I encountered in Portland the past weekend. But, no issue at all.

Battery on this thing is incredible ... back with my 5D, I would always require at least 2 batteries. Now, when I got home after about 2000 shots, my battery is still showing ... full charge. Is this thing nuclear or what? I hope I don't start growing a 3rd arm.

-- OK, end of the good news, here's the bad --

Now ... ai-servo focus. God I wanted to throw this camera against the wall. I am sorry guys, but ... wow ... holy back-focus (or OOF). I am pretty sure it's not my lens, because the same 24-70 on the 5D with ai-servo is spot on all the time. This happened especially in dark barely lit rooms. There are some minor lighting, I was shooing at ISO 2500 with flash ETTL, camera in M mode. f/4.0 and shutter speed for ambient. At the same focal length, the 5D is constantly spot on while the MKIII just back focus back focus back focus back focus back focus back focus back focus back focus back focus oh my god I am going nuts.

Adjusted sensitivity of tracking. Back focus. Adjusted expansion focus points. Back focus. Turned af micro-adjustment for lens on and off (back focus).

Now again, remember, same lens + 5D + ai-servo = no back focus.

Either way, I have a gradulation to shoot again tonight. Going to try again (out of my love for my new MKIII). But, I'm about to call Canon about this.

Kevin034 wrote in post #5375858
... Is this thing nuclear or what?

Nothing so hazardous, ... it's just got an unlicensed particle accelerator developing 1.21 jigawatts of pure proton power on board.

Kevin034 wrote in post #5375858
Just shot the first wedding of the season for me this past weekend. This is in Seattle, and for those that've been around ... the weather has been CRAZY.

Literally, one moment it was close to 70 and sunny, then in 30 minutes it started raining, then snowing, and back to 70. My MKIII got sun, rained on, and snowed on, all in span of 8 hours. Temperature went from close to freezing to 70. Unbelievable.

How did it do? It didn't bat an eye and kept on clicking. I was worried going into this weekend because of the error 99 I encountered in Portland the past weekend. But, no issue at all.

Battery on this thing is incredible ... back with my 5D, I would always require at least 2 batteries. Now, when I got home after about 2000 shots, my battery is still showing ... full charge. Is this thing nuclear or what? I hope I don't start growing a 3rd arm.

-- OK, end of the good news, here's the bad --

Now ... ai-servo focus. God I wanted to throw this camera against the wall. I am sorry guys, but ... wow ... holy back-focus (or OOF). I am pretty sure it's not my lens, because the same 24-70 on the 5D with ai-servo is spot on all the time. This happened especially in dark barely lit rooms. There are some minor lighting, I was shooing at ISO 2500 with flash ETTL, camera in M mode. f/4.0 and shutter speed for ambient. At the same focal length, the 5D is constantly spot on while the MKIII just back focus back focus back focus back focus back focus back focus back focus back focus back focus oh my god I am going nuts.

Adjusted sensitivity of tracking. Back focus. Adjusted expansion focus points. Back focus. Turned af micro-adjustment for lens on and off (back focus).

Now again, remember, same lens + 5D + ai-servo = no back focus.

Either way, I have a gradulation to shoot again tonight. Going to try again (out of my love for my new MKIII). But, I'm about to call Canon about this.

Did you actually do micro-adjustments or just turn it on per lens? If you just turned it on, that was a waste of a few clicks. Generally needs 10min or so to 100% calibrate the lens (take shot, check, move microadjustment left/right, take shot, lather rinse repeat). As for the battery... yea, it's pretty much the best thing on the market. Full 1% increments with battery health indicator (don't let dpeview fool you, they are actually dead wrong on the two features). A 5000 shot/charge life, what else do you really need (other than flash batteries that last that long and 60gb of memory).