I am, primarily, a Pentax guy when it comes to photography. However, I also have a non-Pentax full-frame, and on that camera I largely rely on two very good lenses - a 24-70 f/2.8 and 70-200 f/2.8 - for the majority of my activities. That gives me an uninterrupted range of 24-200mm, which covers 90% of my requirements quite nicely.
With Pentax, I'm still using APS-C format cameras (the K-5, K-3 and K-3II), and that's likely to be the case for some time given that I already have full-frame capability elsewhere in my kit. In addition to a wide collection of primes, I have a Sigma 17-50 f/2.8, and I'm very happy with that - it gives me a FOV range equivalent to 25-75mm on full-frame (almost identical to the 24-70). However, I've been wanting something to cover the short-to-medium-tele focal range for a little while. I considered both the 50-135 and 60-250, but my concerns over SDM failure (whether justified or not) prevented me from going with either (that's also the main reason I went with the Sigma 17-50 rather than Pentax's own 16-50, and not the slight edge to the Sigma optically which I doubt I'd have noticed
). Well, after much deliberation, I've just ordered a Tamron 70-200 f/2.8 (equivalent to 105-300 on full-frame) and I have no concerns that it will do it's job admirably. My question is, does anyone find the gap between the 50mm long end on typical f/2.8 zooms, and the 70mm short end on typical f/2.8 teles, to be much of a hindrance? I realise, of course, that my legs can (and will) largely compensate for the gap, but I'm really asking if anyone finds this gap much of a limitation?
Thanks in advance
Last edited by BigMackCam; 06-02-2016 at 06:03 PM.