1dx mark 3 laggy autofocus.

[Sagihurvitz]

Hey everyone, 

After using the 1dxii for the last 5 years, I bought myself the 1dxiii last week. 

Now, overall this camera is insane and I love it, but I found something that bothers me a bit. 

Outdoors, during daylight, the autofocus is crazy fast. (I'm using the full af zone with initial servo af point) now, during night time or even during day time if I'm in a room that doesn't have direct sun light it feels like the autofocus is laggy, suddenly it's not that fast, and it feels even slower than the 1dxii, and I checked both cameras in the same scenarios, 1dxii autofocus speed is consistent on both cases and 1dxiii is not, feels like there's a half a second latency from the second I press the af button until it's actually starts working, and the af point movement becomes laggy. 

I using all L prime lenses (checked them all) 

Brand new 1dxiii - a week old, already shot one wedding with it. 

Please help!

[Sagihurvitz]

And compare that with your 1dxii... And tell me where it's more consistent.

[wq9nsc]

I haven't noticed any AF lag issue with either my series II or III bodies.  I just set up a 1DX II and a 1DX III body with full zone enabled and tried both servo and single shot using 24-70 and 70-200 f2.8 glass on both bodies which seems like a bit more critical test since focus won't be quite as fast as using my great white primes.

I focused on a close spot then focused on the target cat about 12 feet away in a room dark enough that the cameras chose ISO 102,400 for a standard exposure at 1/125, f2.8 which should be darker than any wedding you would shoot.  Acquisition was quick and sure with both bodies but I think you need to actually compare your 1DX III to another 1DX III body because individual perceptions vary.

For sports, I generally have 24-70, 70-200, and 400 f2.8 Canon glass on three different bodies; I shoot in manual mode with auto ISO and with the lenses wide open and shutter speed @ 1/800 to 1/1000 ISO is generally in the 8,000 - 16,000 range and focus acquisition stability/speed is excellent and I don't notice any difference between the II and III.   The II was noticeably better in lower light than the original 1DX but with AF performance for what I use (single point with expansion, always in servo mode) the performance of both the II and III are exceptional with not enough difference that I have ever noticed.

And Tabs is clearly enjoying the travel case for my Hensel flash beauty dish a little too much! 🙂 She is a ISO 102,400 photo from this test.

Rodger

[jrhoffman75]

Hi Rodger. What firmware version are your cameras on?

[Sagihurvitz · Accepted solution]

So I figured it out.. Since I never update my cameras firmware until I absolutely sure there's no new issues... When I got this camera, for some reason I decided to update it from 1.6.2 to 1.7.1 (the new update)... Big mistake, now I'm back to 1.6.2, and everything is fantastic. Thank you everyone for your time and effort