Originally Posted by ptpdprinter
Don't Olympus and Pentax already have this?
yes, Olympus introduced it with it's OM-D E-M5 II followed by Pentax with it's K-3 II, both abt. 2 and1/2 years ago or early 2015. See http://www.imaging-resource.com/PROD...m5-iiTECH2.HTM
which is also comparing the two. Pentax' moveable sensors also do image stabilsation, can simulate an AA filter ( sensor has no AA filter ) and track stars during long exposure astro-shots.
This articel compares images taken with pixel-shift of the Pentax K-1 ( "FF" 35mm 36 MP sensor, issued Feb. 2016 ) with the "Hi-Res" mode of Olympus OM-D E-M5 II and Pen-F and the ( then? ) highest-resolution full-frame offerings of Canon, Nikon and Sony ( EOS 5DS R, Nikon D810, Sony A7R II ): http://www.imaging-resource.com/PROD...k1PSR_MODE.HTM
Unlike Oly and Pentax Sony's doesn't do it "in-camera", quote: "However, unlike the system Pentax uses or the earlier, 8-shot process used by Olympus, the a7R III cannot assemble the final images in-camera. Instead four Raw files must be processed using a freely downloadable image processing application for PCs that Sony will offer. The camera must also wait between 1 and 30 seconds between shots for the sensor to settle, which is likely to exacerbate the problems of subject movement between the first and last shot." from: https://www.dpreview.com/news/342699...r-battery-life