It would be a feature that would interest me in a future mirrorless body. I have tried on on a Sony and it's pretty nice. I suspect that one you really began to use it with MF lenses it would be hard to go back.
On Tue, Sep 6, 2011 at 8:47 PM, Godfrey DiGiorgi <[email protected]> wrote: > On Tue, Sep 6, 2011 at 3:06 PM, Brian Walters <[email protected]> wrote: >>> "Peaking mode" highlights the part fo the image in focus. It's a >>> nifty way to do manual focus. The Sony NEXs are best known for it. >>> >>> http://www.youtube.com/watch?v=sJxUiLqPUgQ >>> >> OK. Thanks for the clarification, but is this any different from (or >> better than) the focus confirmation indicator that we get with DSLRs >> when used with manual lenses? > > "Focus peaking" highlights the edges of the scene in the local areas > where contrast is at its peak. Unlike with a focus confirmation light > on a DSLR, with a fixed position array of AF focus sensors, focus > peaking operates on the actual image being captured by the sensor. > When you turn it on, you can literally see the focus plane shift based > on where the peak contrasts are located in the image. > > The GXR with firmware 1.40 (not limited to just the A12 Camera Mount) > supports two modes: mode 1 retains the natural full color image in the > viewfinder, illuminating edges with highlights as focus is moved. Mode > 2 does the edge illumination but also does a high pass filter on the > image, which essentially means you see ONLY the contrasty edges. > Coupled with the focus magnification function (which allows you to see > high resolution 2x, 4x and 8x magnifications of the field of view), > you can pinpoint critical focus to an arbitrary level of precision > with all kinds of scenes and lenses, even with lenses stopped down to > f/11 or f/16 and deep depth of field. > > These are focusing tools impossible in an optical reflex finder. They > require fast, high-resolution image processing of the incoming image > stream. Focus aids like this have been a high-end feature on > professional video cameras for a bit ... Seeing it come into the still > camera world is great. > > I experimented with the GXR + A12 Camera Mount, experiencing this > feature with manual focus lenses, a week ago. It is thrilling to see > how easy and precise TTL manual focus can become when using it. > -- > Godfrey > godfreydigiorgi.posterous.com > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- Steve Desjardins -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
