> On Aug 1, 2014, at 8:31 AM, Larry Colen <[email protected]> wrote: > > Darren Addy wrote: >> I'm not terribly interested in mirrorless cameras (although I have to > I'm not terribly interested in anything made by Sony these days.
Were it not for the A7/r/s, I wouldn't be either. Not because of any 'soulless accountants' or other mumbo jumbo like that, but because there's little else in their product line that I find appealing. > There are various technical advantages of mirrorless: > > 1) shorter registration distance means no retrofocus, which means better > image quality at wider angle of view. That does not play out in reality, or is at least inaccurately stated. Wides are a challenge on digital sensors, non-retrofocus wides in particular. The best performing wides on any digital sensor are retrofocus or at least semi-telecentric designs, to date. It's a matter of getting an orthogonal light path to the sensor all the way to the edges rather than retrofocus design really. A short mount registration means you have more room to add corrective optics behind the primary element groups and less worries about mechanical interference. > 2) shorter registration distance means that you can use just about any lens > made. ... But results will depend upon the optical match between lens and sensor stack. See above. > > 3) No mirror bouncing around means no mirror bouncing around. Shutter vibration is still an issue, note all the hysteria about "shutter shock" lately. A fully electronic shutter will conquer that issues, but non work 100% to date. > > 4) Live view works much better for low light manual focus etc. What you see > is what you get. With a mirrorless you don't get the huge shutter lag while > everything bounces around between live view and actually taking the photo. There is certainly less mechanical banging about going on. But it's amusing to hear you talk about 'much better for low light manual focus' when so many of the SLR diehards claim exactly the opposite. :-) > > There are certain ergonomic advantages to the pure optical path when looking > through the viewfinder. Ergonomic advantages? Can't imagine what you mean by that. And what is a "pure" optical path? The main advantage to the Sony A7 for me is the excellent sensor, excellent viewfinder, and a modest size (about the same as a Nikon FM2) with great compatibility for all my SLR lenses, in several mounts, and a few of my RF lenses. Mirrorless or not makes little difference to me, I rate it highly based on its functional performance. G -- 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.
