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Olympus OM-D E-M1 The first 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 16th April 2015
TonyR TonyR is offline
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Re: Is C-AF actually improved with v3.0?

Version 3.0 firmware only improved C-AF for Sequential H so anyone using Sequential L or Single shot won't see any improvement.
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  #17  
Old 16th April 2015
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Re: Is C-AF actually improved with v3.0?

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Originally Posted by TonyR View Post
Version 3.0 firmware only improved C-AF for Sequential H so anyone using Sequential L or Single shot won't see any improvement.
And the thing to remember, as it does make a difference in some circumstances, C-AF Hi uses PD-AF with native & 4/3's lenses. Sometimes it may be better to use S-AF Sequential Low as that will Expose & AF for each frame & with the native lenses, uses CD-AF which can be more reliable in some situations.

I'm sorry for repeating this, but I found it made a big difference for me using the 75-300 (II) lens for ocean shots of distant boats etc. (not enough vertical detail for PD-AF perhaps).
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Old 17th April 2015
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Re: Is C-AF actually improved with v3.0?

I have given the E-M1 with the V3 firmware a fair chance to deliver, but must say the CAF performance is mediocre.

I tried on gulls, probably the easiest subject, often predictable motion pattern.

With the 300/2.8, from a sequence at most one is pin sharp. Quite often the whole sequence is ruined, none is pin sharp. Tried with various apertures, less bad seems to be around F/4 or F/4.5. Hunting is also an issue but that's another topic.

The results with the 50-200 SWD are, if not great, better with maybe two or three good ones in a sequence - however 200mm has often way to short reach for details. I suppose it has to do with the design of the lens, faster AF.

No way the E-M1 CAF is capable of keeping subject in focus throughout a sequence, not even with clean background or against sky.
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Old 17th April 2015
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Re: Is C-AF actually improved with v3.0?

I still stick with S-AF but next Red Kites outing shall try new V3 C-AF

thanks for this very interesting reference thread of lots of Conributions from so many peeps
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Old 17th April 2015
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Re: Is C-AF actually improved with v3.0?

Perhaps the performance of the new firmware is very lens dependent?





Both tken with the 40-150 f/2.8 with MC-14.
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Old 17th April 2015
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Re: Is C-AF actually improved with v3.0?

As I started this thread I thought that I should really post a couple of examples to show the sort of shots that I am talking about. These are two of the four shots from the session that I deemed worth keeping. As you can see the bird was reasonably close in ideal conditions but there is a complete lack of fine detail, which I would have liked to capture.

At least it sounds as if I am not alone in my disappointment.







Ron
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Old 17th April 2015
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Re: Is C-AF actually improved with v3.0?

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Originally Posted by TonyR View Post
Perhaps the performance of the new firmware is very lens dependent?





Both tken with the 40-150 f/2.8 with MC-14.
Very good and I believe more light does aid AF. However this combination hardly gives the sort of reach most bird and wildlife photographers need, where is the super telephoto lens that this professional grade camera begs - still in the pipeline! Sorry to harp on about it but my 7DII CAFs instantly with a 20 year old 400mm f5.6 plus 1.4x (giving f8) and tracks impeccably, so while wide apertures may help it's still possible to AF accurately with dimmer lenses.

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Old 17th April 2015
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Re: Is C-AF actually improved with v3.0?

I think we all had our hopes raised by firmware 3.0 for C-AF but have been disappointed, it is just not up to the job. Here is hoping for EM-1 MK II and the 300 Pro f4!
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Old 17th April 2015
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Re: Is C-AF actually improved with v3.0?

ooh rah
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Old 18th April 2015
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Re: Is C-AF actually improved with v3.0?

Quote:
Originally Posted by David Morison View Post
Very good and I believe more light does aid AF. However this combination hardly gives the sort of reach most bird and wildlife photographers need, where is the super telephoto lens that this professional grade camera begs - still in the pipeline! Sorry to harp on about it but my 7DII CAFs instantly with a 20 year old 400mm f5.6 plus 1.4x (giving f8) and tracks impeccably, so while wide apertures may help it's still possible to AF accurately with dimmer lenses.

David
Absolutely. The 40-150 f/2.8 is certainly not a birding lens, even with the MC-14. It just doesn't have the detail at the sort of ranges that you usually get for birds. However, it does focus quite well.

I expect the 300mm f/4 to be much better for AF, not least because the subject will occupy a larger proportion of the frame. It certainly won't do it as well as a 7DII but it stands a chance of being a bit smaller and, I hope, a bit lighter, and f/5.6 with the MC-14 at a similar effective focal length.

However, if the 300mm f/4 disappoints, it will probably make me give up on micro four thirds altogether!
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Old 18th April 2015
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Re: Is C-AF actually improved with v3.0?

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Originally Posted by Olybirder View Post
As I started this thread I thought that I should really post a couple of examples to show the sort of shots that I am talking about. These are two of the four shots from the session that I deemed worth keeping. As you can see the bird was reasonably close in ideal conditions but there is a complete lack of fine detail, which I would have liked to capture.

At least it sounds as if I am not alone in my disappointment.







Ron
The light and colors are nice but unfortunately the bird is slightly out of focus, enough to blur the fine details.
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Old 18th April 2015
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Re: Is C-AF actually improved with v3.0?

The 40-150 certainly lacks the reach for birding and the em1 hasn't the sophistication of the original aged 7D focusing however I have used this combo for some close up insect and flora work, not macro! where I have been more than satisfied its an excellent all rounder and have no complaints. Therefore
I will for the Time being keep a foot in both camps. Maybe when the 300 f4 and em1 mk2 appear I will look again at BIF with olympus.
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Old 18th April 2015
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Re: Is C-AF actually improved with v3.0?

Here is an example documenting the issue.

Here are the two first frames from a sequence shot at 5 or 6 fps. This is a subject that should not be too much of a challenge to keep focus on. The first is quite nice and in focus, the second is horrible, suffers from severe OOF (back focus).

My recycle bin is full of similar failures.

EM-1 V3.0 ISO 400 1/1600s, 9 central AF squares.
300/2.8 + EC14 F4/0






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Old 18th April 2015
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Re: Is C-AF actually improved with v3.0?

Tordon I usually do birds and dragons in flight with spot focus and use magnify (latter on my F2 button) maybe that will help you ?
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Re: Is C-AF actually improved with v3.0?

I thought we were discussing the EM1 CAF performance?
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