Originally posted by photoptimist Strange..... My experience so far has found the K-1 to focus much faster and more confidently that the K-5 even on long-throw focus lenses such as the 100/2.8 macro. A few root causes (and related evidence) might be:
1. Some issue with the 24-70 (supported by gabriels comment but not your experience after swapping lenses).
2. Some issue with the settings of all the K-1 AF menu configurations (not hard to do given that the K-1's manual doesn't explain these options well).
3. A strange interaction with high-frequency flicker in the lighting at the wedding's venue (consistent with poor performance at the wedding and great performance at home).
#3 is a distinct possibility. The place was called "The Party Barn," and it was basically a steel building with fluorescent long tube shop lights. There was a large west facing double car garage door that was open and a lot of ambient cloudy light was coming in from the side. But, the failure of the AF was during the processional when the shop lights were pretty much 100% of the available light for AF, and same thing with the later dancing shots.
---------- Post added 10-16-16 at 05:41 PM ----------
Originally posted by Tjompen1968 In Live View: If Electronic Shutter is ON then it is not possible to use flash.
---------- Post added 10-16-16 at 06:32 PM ----------
Well that SOLVES that mystery!! THANKS!!!
---------- Post added 10-16-16 at 05:42 PM ----------
Originally posted by biz-engineer You've got to switch On the AF assist light. And on the K1, there is IMO a little bug in firmware regarding the light meter threshold used to switch On the assist light: there is a gap which does not exist on the K3 and K5II series. i.e on the K1, the AF assist light switches on when light levels are already too low for proper AF operation, and so there is a range of light level within which K1 fails to focus and when the light level goes down K1 is again able to focus... That's at least what I characterized after seeing several users complaining about low light AF. I believe it can be fixed in firmware... if Ricoh want to do it.
AF assist light was set to "ON." But as you say, I can't remember it actually coming on at all. It really wasn't that dark at the event.
---------- Post added 10-16-16 at 05:47 PM ----------
Originally posted by kenspo .....there is no faster Pentax AF out there then the K-1 in combo with any of the new zooms.
Well that's what I would have expected, but was definitely not my experience under the conditions I shot last night. Like I said, my K3II and K5IIs was significantly faster to acquire focus under the same conditions.
Now at home at 2AM in my office lit by 1 60 watt bulb, the K1 and 24-70 focused on the dark walls instantly and the K3II and K5IIs hunted. It may just have been the weird shop lights at the event. I am not drawing any conclusions, just reporting an anomaly from what I expected vs. what I experienced.