Has anyone figured out how to use C-AF & C-AF TR focus settings?

Cornelius

Mu-43 Regular
Joined
Sep 9, 2013
Messages
51
I literally never use these two focus settings. For all my work, I use the trusty S-AF MF focus mode. Every time I dip into these modes I find them uncomfortable to use when locking in on a moving subject. I recently tried the tracking and watched the image go in and out of focus thru the viewfinder. I experimented on got some accurate shots with one miss, but I just don't feel comfortable using it. Continuous auto focus doesn't instill much confidence either as the focus appears jittery. Anyone have any tips or thoughts on using these focus modes?
 

marcr1230

Mu-43 Regular
Joined
Nov 28, 2013
Messages
178
C-AF is simple , switch to low continuous shooting rate and C-AF and the camera with refocus btw shots
Ibis is automatically disabled is this case I think
It works well enough - see my threads about sports photography

C-AF + TR is worthless , tracking gets confused in anything but perfectly simple conditions
 

Ccasey

Mu-43 Regular
Joined
Jul 29, 2011
Messages
163
Location
Austin, TX
Real Name
Chris
C-AF is simple , switch to low continuous shooting rate and C-AF and the camera with refocus btw shots
Ibis is automatically disabled is this case I think
It works well enough - see my threads about sports photography

C-AF + TR is worthless , tracking gets confused in anything but perfectly simple conditions
Agree with this. I find C-AF pretty good, honestly. It's not DSLR quality, and as you say it doesn't really inspire confidence, but the results are not bad. I'm not sure about the IBIS being disabled... I thought there was a setting to control that, but I could be mistaken.

One thing I did find was setting the focus Lock to High improved my results in my kids' soccer games. Also, when you first press the shutter button to start focusing, if you give it a 1/2 second or so to find focus (square turns green) and then let it track it works better. Trying to just shoot instantly generally gets you at least one out of focus frame, and from what I recall, the camera takes a couple frames to overcome a big shift out of focus.
 

Ccasey

Mu-43 Regular
Joined
Jul 29, 2011
Messages
163
Location
Austin, TX
Real Name
Chris
Ah, sorry - my comments were about my E-M1. I've never used an E-M5 so I don't know how much will apply. Best of luck.
 

christofp

Mu-43 Veteran
Joined
Jul 21, 2012
Messages
262
I have both: EM1 and EM5.

Quite a big difference. I found the C-AF mode with my EM5 more or less useless. I switch to "S-AF M" 99,9% of time.

On my EM1, things are better. C-AF with framerate L and ShutterPrio=off is very useful, 90% keeper rate. Quite a difference to the EM5.
I use C-AF 30% of time and for faster access I have replaced one useless mode on the Mode-Wheel with a C-AF MySet (S-mode, 1/1000s, C-AF, 4 frames/s, AF-Prio)

Christof
 

Cornelius

Mu-43 Regular
Joined
Sep 9, 2013
Messages
51
Well it looks I'm stuck with two useless focus modes on the EM5. I have no idea how the engineers could release that. Hopefully a miracle firmware update will improve the performance.
 

yakky

Mu-43 Top Veteran
Joined
Jul 1, 2013
Messages
661
Well it looks I'm stuck with two useless focus modes on the EM5. I have no idea how the engineers could release that. Hopefully a miracle firmware update will improve the performance.
You must not be an engineer. If it was up to the engineers, no camera would ever be released. Its the marketing guys that shove them along.

That said, C-AF TR is ok for me, I get a hit rate of upper 70's to lower 80's. The problem is if the subject moves out of the frame or gets near something of similar color/lighting, then all bets are off. Tracking a kid wearing a red shirt on a grassy field works pretty well. Switch to a green shirt and you are out of luck. There is only one mirrorless system that is excellent at C-AF and C-AF TR, and that is the Nikon 1. The old Fuji's are TERRIBLE and even the XT1 appears to be in the same ballpark as M43.
 

HaViet

Mu-43 Veteran
Joined
Mar 20, 2014
Messages
341
Location
Hartford, CT
I tried CAF +TR to shoot my little ones on the swing, and it drove me crazy. Sometimes it focuses on the face, the hands, the swings, etc.

I went back to SAF and shoot away. This was with the EPM2.
 

yakky

Mu-43 Top Veteran
Joined
Jul 1, 2013
Messages
661
I tried CAF +TR to shoot my little ones on the swing, and it drove me crazy. Sometimes it focuses on the face, the hands, the swings, etc.

I went back to SAF and shoot away. This was with the EPM2.
Swinging is a torture test on any camera. How can the camera know which direction the swing is going to move?
 

jziegler

Mu-43 Veteran
Joined
Dec 15, 2012
Messages
264
Location
Salem County, New Jersey
I tried CAF +TR to shoot my little ones on the swing, and it drove me crazy. Sometimes it focuses on the face, the hands, the swings, etc.

I went back to SAF and shoot away. This was with the EPM2.
Did you try to use the touch screen to start the AF on a face? That can help sometimes.

Swings are tough, if you get better than 50% in focus with any focus mode, you're doing really well.

Honestly (and I need to try this myself), for swinging the best method might be to use manual focus, pre-focus to a point in the path, and time the shutter release to when the swing will be at that point.
 

jziegler

Mu-43 Veteran
Joined
Dec 15, 2012
Messages
264
Location
Salem County, New Jersey
Well, it's not just us with AF issues, Thom Hogan is saying that it's the biggest current problem on all cameras, including DSLRs:

http://www.dslrbodies.com/newsviews/its-the-focus-nikon-should.html

According to his use during a recent workshop, even the E-M1 couldn't keep up in all cases. And on the DSLR side, the D7100 had issues as well.

C-AF is becoming the biggest weakness of all current cameras it seems. Let's hope that Olympus sees this and decides to work on it in their next generation of cameras.
 
Links on this page may be to our affiliates. Sales through affiliate links may benefit this site.
Mu-43 is a fan site and not associated with Olympus, Panasonic, or other manufacturers mentioned on this site.
Forum post reactions by Twemoji: https://github.com/twitter/twemoji
Copyright © 2009-2019 Amin Forums, LLC
Top Bottom