Originally posted by falconeye
You may speculate so.
But people now shooting FF have no intention to go APSC ever again in their life. Nobody of those *I* know, at least.
If anything, they add smaller than APSC gear to their arsenal, like L/RX100.
BTW, a pro-level 24-70/2.8 may be heavy and expensive. But I found it worth every penny. Between an RX100 24-70 and FF 24-70, there is no room for APSC. The RX100 is (in equivalent terms) an F/4.9-7.6 lens, the FF F/2.8 of course. An APSC kit zoom is worse, a DA* 16-50/2.8 is an F/4, just a bit better than the RX100.
So, the advantage of an APSC dSLR with zoom is that it is cheaper. Otherwise, it hase been eaten up from below and above. Already.
The only room for APSC I can see in the foreseeable future are pro-level APSC mirrorless cameras like NX1 or A7000. When they beat SLRs in something. But here again, cameras like the A7 may eat that cake too.
FWIW I know that this is not necessarily accurate, as I just sold off my entire Nikon full-frame system. Another friend is looking to ditch his for a Fuji mirrorless system. I got sick and tired of lugging that giant thing everywhere to go shoot, paying a small fortune for VERY heavy lenses, etc. And I had 0 interest in maintaining multiple systems.
I no longer do weddings and I primarily carry my camera when I'm outdoors. The Pentax system likely offers the best combination of widespread weather sealing, compact size, and ergonomics on the market today. The AF performance of the K3 is far better than past Pentax bodies which made the switch possible (finally good enough that I don't really miss the slightly better performance of the D700 AF).
Now I have an AF-540 and a DA* 16-50 for any paid work I happen to do, and I use the 16-50, 18-135, and 55-300 when hiking, skiing, traveling, etc. I've got a few primes to use when I'm indoors in low light situations. Landscapes are my favorite anyway, so I rarely, if ever, shoot wide open; meaning that the additional depth of field in FF wasn't being utilized. I find the quality of my work to be just as good as with my Nikon system, so I'm a happy camper.
Last edited by RustyToyotaVT; 07-13-2015 at 12:55 PM.