43 Rumors

Nice, but the question now is: will 4/3 lenses AF fast on the OMD

“This will allow us to use the amazing weather sealed Four Thirds lenses like the 14-35mm f/2.0 the 35-100mm f/2.0 and the almost $6.000 30mm f/2.8 Zuiko lens.”

Don’t forget the SWD 12-60 & SWD 50-200 too, but the 14-54 II will work just perfectly on this model, with it’s weather sealing.

Well there’s little point using the pro lenses if they don’t focus fast. Their ‘pro’ kit in the past has had weather sealing, build quality, fast lenses and… fast focus. Thumbs up

PS: admin – when do you sleep?!?

If they can do PDAF I will pick up the OM-D, weather sealed adapter, and the 12-60 4/3rds lens. That would be a pretty wicked combo.

I don’t know about the 14-35F2.0 though. As nice of a lens as it is, it may just be too big and heavy for the OM-D.

The 12-60 I think would be the limit.

Go to http://www.four-thirds.org/en/special/matching.html

And see for yourself how those lenses look on a PEN. The OM-D won’t be that much bigger than the current PEN.

Don’t want to know the retail price, considering how much Olympus asks for non-weather sealed adapters.

Any word about a underwater case?

Have any of you considered the following scenario….
if it is in the style of the OM series, like my OM1 I still have, maybe it will be about the same size, rather than Pen size.

Then what if they make it so that the 4/3 lenses fit directly (without adaptor) and focus fast while still mirrorless. That size body woud be quite ok with the 14-54 or even 12-60, and the 50-200 SWD and we can then use these wonderful FAST weather-sealed lenses again with a more compact weather-sealed body than the E5.

how about that?

Oh….I think I may have come here by mistake….I thought this was an MFT website….not the Olympus marketing center. Where is all of the chatter about those hot new Sigma MFT upcoming lens offerings??????? LOL!

Yay….another expensive accesories….I wonder how much it cost to make current adapter to become weather shield…the only let down is if there’s no improvement (read: same performance of 4/3 lens in current m4/3 or PEN lines) AF…

Let’s put couple of statements together…

admin: “new weather sealed MMF 43 to m43 adapter … will allow us to use the amazing weather sealed Four Thirds lenses”

Terminator (source), speaking about OM-D autofocus system: “Normally it’s p or c, but I will hint to the possibility of both p & c.” (P=PDAF; C=CDAF)

O (source), speaking about OM-D sensor: “As for the sensor, it’s not Pany.”

unnamed source: “AF is not faster … it is MUCH faster than on the Olympus E-P3.”

So, I’d say it’s highly probable, FT4, OM-D will have PDAF on sensor ( like Nikon 1 ) enabling: (1) extremely fast auto focus (2) AF with all 4/3 lenses, weatherproof ones included, hence the need for weatherproof 4/3 to m4/3 adapter. As for sensor manufacturer, Aptina, the maker of Nikon 1 sensor, is the likeliest candidate IMO.

How to get fast autofocus?
* one or more sensors/ways of detecting when in focus, and when not in focus
* one or more actuators to reposition the lens elements wrt sensor in order to make the selected point of interest to be in focus
* the combination of sensors should enable accurate information with the least lag/delay possible, and with the least possible energy consumption
* the combination of actuators should enable quick movement of lens elements and/or sensor without using exsessive energy; this implies moving bodies with as little weight as possible, avoid moving bodies against friction, and making shure that energy is not used *when in focus*
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The Nikon 1 cameras combine two sensors — smart, because you get more information than from only one sensor.
When it comes to actuators, the Contax approach of moving the sensor is smart because the sensor is light (fast action is possible) and moving it implies little friction work. But if piezoelectric actuators are used, moving the sensor out of the relaxed position will imply increased energy consunption, and the stroke of such actuators is small. Piezoelectric motors partially solve this problem (avoid use of energy when in focus, but are bulkier, has more lag, and more friction). By combining piezoelectric actuators with servo motors to move lens elements, the p. actuators will perhaps enable quick focus, and then the servomotors moving lens elements (slower) can gradually move the elements such that the p. actuators are returned to a relaxed position ==> avoid static energy consumption.
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I assume PDAF vs CDAF is related to *sensing* when the chosen object is in focus. If so: this does not explain *why* 43 lenses focus slowly with CDAF, while m43 lenses focus fast. The correct explanation must be related to the actuators, or how the actuators use the sensor information (e.g if the actuators only are compatible with PDAF signals, etc).
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Anyone that knows why 43 lenses focus slowly with CDAF?