johnstra wrote:I cannot really understand why anyone would want to switch systems. I cannot contemplate replacing my body and all my lenses - I would need to win the lottery first. If you perceive the A99 does not give you much advantage over your A850 or 900 then keep the A900 and save all that money. Personally I would argue that the A99 is better than the D600 anyway, but it's just a matter of taste. You are not going to get better pictures by swapping that's for sure. I have got used to the viewfinder on the A77 and now prefer it to an optical finder by the way, or at least I recognise that its strengths outweigh its weaknesses.
My view is that Sony are producing much more interesting cameras than their competitors and that optical viewfinders in SLRs are set to last for only a couple more years at most. By the way, 14 bit analogue to digital conversion gives no advantage except possibly in the few cameras with an extremely wide dynamic range and even then I doubt that the accuracy of the ADC can be good enough.
I call it "Breaking Forward". By that I mean a company comes out with a product that is no longer backward compatible with it's former products, or few of them.
Minolta did it with the Alpha mount - could only use old lenses with glass-added adapters, no way to mount them in manual mode. IIRC, the flash units still interchanged. Then they broke that with the iISO shoe.
Sony broke the flash system again when they took over from Minolta, and now again with the new/old ISO shoe. They also broke things (IMHO) with the EVF and no OVF option.
I can almost forgive Minolta on the Alpha mount, but I was so heavily invested in the old SR/MD mount that I didn't go Alpha until I went digital.
Pentax, on the other hand, only modified it's K mount, so I could use my old K-1000 lens. Same with Nikon, although low end bodies don't have screw focus, so there is a bit of Breaking Forward there, if you buy new screw drive lenses and low end bodies.
Nikon understands the concept of 'camera system', in a way Sony doesn't. If I sell off my Alphas and buy Nikon, I can be sure that next years better model will use the same old stuff that I have. If I stick with Alpha and 'upgrade' to the A99, I can't be sure, based upon their past performance, that they won't throw me a curve next year on the next model.
Sure, the new flash works with the old ones wirelessly, but I have 5 flashes and 3 bodies, that means if I get an A99, I'll have to at least spend an extra $100 to get the iISO to new ISO adapters, an added expense. And who'll guarantee that something else isn't broken, of will break with the next model?
Sony has again proved one thing - they are a technology and consumer electronics company, NOT a camera company.
Dusty
An a700, an a550 and couple of a580s, plus even more lenses (Zeiss included!).