Do any MFT cameras have PDAF or "Hybrid" AF?

Started Nov 11, 2012 | Discussions
Alex Notpro
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Do any MFT cameras have PDAF or "Hybrid" AF?
Nov 11, 2012

Basically I like the NEX-5R but would prefer it had an MFT lens mount... Does something like this exist?

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rrr_hhh
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to Alex Notpro, Nov 11, 2012

Alex Notpro wrote:

Basically I like the NEX-5R but would prefer it had an MFT lens mount... Does something like this exist?

All mft cameras ar CDAF (contrast detection auto focus), none is hybrid. I thought that the Nex were all CDAF only too ?

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Shawn67
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to rrr_hhh, Nov 11, 2012

" I thought that the Nex were all CDAF only too ? "

Sony added on sensor PDAF to the NEX-5R.

Shawn

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sb123
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to Alex Notpro, Nov 11, 2012

No, but the new Panasonics, the G5 and the GH3, as well as the EM5 all have fast and effective CDAF, including working AFC functions (at least with some lenses), so there is no need for PDAF, and that will soon be true for the entire MFT universe.

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Steve Barnett

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Shawn67
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to sb123, Nov 11, 2012

"so there is no need for PDAF"

As an owner of the OMD I strongly disagree with that.

On the OMD use AFC on a subject that isn't moving and it is constantly hunting back and forth to keep confirming focus.

Use AFC on a PDAF camera and it will lock on to a static subject and have no need to keep hunting.

Shawn

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FrankParis
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to Shawn67, Nov 11, 2012

Shawn67 wrote:

As an owner of the OMD I strongly disagree with that.

On the OMD use AFC on a subject that isn't moving and it is constantly hunting back and forth to keep confirming focus.

Use AFC on a PDAF camera and it will lock on to a static subject and have no need to keep hunting.

The "constant hunting" as you call it is absolutely no problem at all. Just press the shutter release and the picture will be taken dead on more than 1/10 of a second later. So your "strong disagreement" is meaningless. Aside from that, I've found that most of the time the "constant seeking" you're talking about doesn't happen at all and, to quote you, "it will lock on to a static subject and have no need to keep hunting." I don't know what the problem is that you have with the OMD autofocusing. It is magnificent.

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guybie
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to sb123, Nov 11, 2012

I hope this statement is based on your experience?

Because i don't have this experience with my GH2 for BIF!

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sb123
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to guybie, Nov 12, 2012

it is very much based on my experience. Just about every day since I got the G5 I've shot BIF, and AFC works time after time without a problem. My SLR should be so good.  The GH2 is not nearly as good. With the 75-300 it works in AFC mode. It does not work usably with the 100-300.

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Ulfric M Douglas
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G5 BIF
In reply to sb123, Nov 12, 2012

sb123 wrote:

it is very much based on my experience. Just about every day since I got the G5 I've shot BIF, and AFC works time after time without a problem. My SLR should be so good. The GH2 is not nearly as good. ...

Steve that sounds very interesting : maybe birders should be looking to get a G5 if they have m4/3rds lenses.

Did you make a thread detailing your findings?

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Andy Crowe
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Not yet, possibly next OMD
In reply to Alex Notpro, Nov 12, 2012

Basically I like the NEX-5R but would prefer it had an MFT lens mount... Does something like this exist?

None do yet, Olympus is rumoured to be using it in their next OMD to improve 4/3rds lens performance, but nothing is confirmed yet

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marike6
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to FrankParis, Nov 12, 2012

FrankParis wrote:

Shawn67 wrote:

As an owner of the OMD I strongly disagree with that.

On the OMD use AFC on a subject that isn't moving and it is constantly hunting back and forth to keep confirming focus.

Use AFC on a PDAF camera and it will lock on to a static subject and have no need to keep hunting.

The "constant hunting" as you call it is absolutely no problem at all. Just press the shutter release and the picture will be taken dead on more than 1/10 of a second later. So your "strong disagreement" is meaningless. Aside from that, I've found that most of the time the "constant seeking" you're talking about doesn't happen at all and, to quote you, "it will lock on to a static subject and have no need to keep hunting." I don't know what the problem is that you have with the OMD autofocusing. It is magnificent.

His strong disagreement is not meaningless as he's 100% correct.  Why do you think Nikon spent four years developing on sensor PDAF of the Nikon 1?  For predictive AF tracking CAF simply cannot keep up with fast moving subjects.  I don't know if anyone here has ever tried a Nikon 1 for BIF or sports or action, but in AFC it can track a moving subject with great accuracy, similar to a pro DSLR.

Sony understands this and has implemented PDAF in the NEX-5R.

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thinkfat
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No, and I'm not sure you'll want that.
In reply to Alex Notpro, Nov 12, 2012

All current implementations of the "Hybrid AF", i.e. PDAF on main image sensor suffer from erratic performance. EOS-M is slow, all Fujifilm (including X-Pro1) are OK only in good light, etc. Good tracking doesn't automatically go together with PDAF as a technology. My EOS 5D MkII is able to track subjects only in good light and using the center AF point, and that's with a dedicated AF sensor!

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IrishhAndy
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to Alex Notpro, Nov 12, 2012

Alex Notpro wrote:

Basically I like the NEX-5R but would prefer it had an MFT lens mount... Does something like this exist?

No.  You need a dslr.

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Without the darkness the light would be nothing !

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sb123
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Re: G5 BIF
In reply to Ulfric M Douglas, Nov 12, 2012

No, but it might be a good idea.  AFAIK no one else on this forum has tried the particular combination, G5 + 75-300.  If they haven't tried it they aren't qualified to tell me that it can't work. There is an undercurrent of AFC success with the EM5 and 75-300.  See Don Parrot's posts or Adventsam's recent owl posting.  And Trevor Carpenter is starting to post very nice shots of birds with the G5 + 100-300 including some BIFs.

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Shawn67
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to FrankParis, Nov 12, 2012

" I don't know what the problem is that you have with the OMD autofocusing."

My "problem" is simply that I have had far better AFC on cameras that use PDAF.

Shawn

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Cane
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to FrankParis, Nov 12, 2012

FrankParis wrote:

Shawn67 wrote:

As an owner of the OMD I strongly disagree with that.

On the OMD use AFC on a subject that isn't moving and it is constantly hunting back and forth to keep confirming focus.

Use AFC on a PDAF camera and it will lock on to a static subject and have no need to keep hunting.

The "constant hunting" as you call it is absolutely no problem at all. Just press the shutter release and the picture will be taken dead on more than 1/10 of a second later. So your "strong disagreement" is meaningless. Aside from that, I've found that most of the time the "constant seeking" you're talking about doesn't happen at all and, to quote you, "it will lock on to a static subject and have no need to keep hunting." I don't know what the problem is that you have with the OMD autofocusing. It is magnificent.

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Frank Paris

Yes, and how dare you say anything negative about the greatest camera ever built. You've insulted Franks mother with that thinking!

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brunobarolo
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to Alex Notpro, Nov 12, 2012

Knowing that Sony meanwhile has the on sensor PDAF technology and that Oly buy their image sensors from Sony now, it's not that difficult to predict that at least high end Oly cameras will have on sensor PDAF quite soon.

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dontfret
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to sb123, Nov 12, 2012

sb123 wrote:

it is very much based on my experience. Just about every day since I got the G5 I've shot BIF, and AFC works time after time without a problem. My SLR should be so good. The GH2 is not nearly as good. With the 75-300 it works in AFC mode. It does not work usably with the 100-300.

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Steve Barnett

Steve, I've just received a G5 as a gift and am ordering lenses for birds and BIF.  I have a long history with FZ50 + Nikon TC17ED.  Any suggestions from you on G5 camera set up (# of focus points, AF-C, AF-F, i-Resolution, etc.) would be appreciated.  I'm about to order the 100-300 Panny, again any comments welcome.

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jl123
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why not look at the Nex6?
In reply to brunobarolo, Nov 12, 2012

Seems to have the most advanced PDAF of their bunch? j

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sb123
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Re: Do any MFT cameras have PDAF or "Hybrid" AF?
In reply to dontfret, Nov 12, 2012

First is the choice of lens.  The 100-300 is a good lens but I would pick the 75-300 instead because of its faster AF.  It's more expensive but Oly often offers a rebate on it.  The lack of IS hasn't bothered me at all since the shutter speeds i want for BIF are higher than the range helped by IS.  The 1/2 stop slower lens speed is compensated, to me, by its frequently useful wider zoom range.

Usually I leave the camera on 23 point focus and AFC.  AF/AE lock is on and AF/AE lock hold is on.  This lets you lock the focus (same as AFS) if that's appropriate and if a green focus square is on your subject.  If more precision is needed, I enable the small single point focus from the left edge of the 4 way controller.

I'm still trying out the IR settings and can't say which is best. If you see sharpening artifacts, back off.

IQ is peak at 400 and that is fine for BIF in good light.  800 is still good, 1600 is acceptable, and 3200 can be used if you don't crop much.

Don Parrot claims that Vivid JPEG setting is best with the EM5 and AFC - I don't find this to be true with the G5.

Steve Barnett

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