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Olympus OM-D E-M1 Mark II The second Micro Four Thirds camera that offers phase detect focusing so you can use Four Thirds DSLR lenses normally as well a Micro Four Thirds lenses.

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Old 28th December 2016
brian1208 brian1208 is offline
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Re: E-M1 MkII Focus Point variations and C-AF

I've been experimenting with CAF and CAF + TR vs my EM-1 standard which was SAF + MF and on results so far now believe that Olympus have delivered what they promised.

With my Panasonic 100-400 on the mk2 I find that both CAF and CAF + TR it locks on as fast as with the SAF but holds that lock even when the birds (only gulls so far, boring times) pass in front of or behind conflicting subjects. So much so that I find I am using CAF with or without tracking in preference to SAF, for both birding and my watersport action work.

(I still find SAF + MF is best for static birds and that trying to use CAF or CAF + tracking when they are in foliage just confuses the system)

I have an album in which I'm logging the output of my tests here

https://www.flickr.com/photos/754450...57674435567373

from which a typical result gull tracked following behind a willow tree which was about 40ft from me (full sequence is in the album) Not a great image as the light was pretty poor and we seem to have this constant haze at present:

PC277848 by Brian Wadie Photographer, on Flickr
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Old 28th December 2016
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Re: E-M1 MkII Focus Point variations and C-AF

Brian,

How many focus points are you using and are you using the tracking focus cluster?

Amanda
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Old 28th December 2016
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Re: E-M1 MkII Focus Point variations and C-AF

for this shot I think it was 5 point cross with the green box active so I can watch it track the bird, mind you when I checked after the event the focus point shown isn't where I expected from the apparent position of the tracking box

I am finding 5 point or 9 point suit most situations, going to single point if the bird is already in front of a confusing background and all points in a totally open sky
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Old 28th December 2016
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Re: E-M1 MkII Focus Point variations and C-AF

I've just got back from a walk with the camera on our local Hengistbury Head reserve and found a limit for using CAF + Tracking.

By around 3.30 the light was getting very low and casting shadow over the harbour, not dark but a noticeable fall off in brightness, at which time CAF + TR was unable to hold lock on gulls at around 50yds distance.


Mind you, even SAF was hunting a bit to grab focus, using 5 point and 9 point focusing

Battery life continues to delight me, this shoot was the second in two days, total individual shots was 2434 and battery showed 34% charge remaining (WIFI and Rear LCD off, some chimping and menu poking)
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Old 28th December 2016
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Re: E-M1 MkII Focus Point variations and C-AF

A better example of how CAF + TR holds focus when passing "Attracting" backgrounds (long range shots)

PC280892-2 by Brian Wadie Photographer, on Flickr


PC280896 by Brian Wadie Photographer, on Flickr

PC280897 by Brian Wadie Photographer, on Flickr
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