RichardTaylor wrote:
It depends - it depends how heavy it is and how fit you are.
From personal experience using a 100-400 tele zoom (3lb or ~1.3kg) its only good to shoot hand held for a few minutes at a time. Carrying it around is not a problem.
Chris - what is your experience?
Well, Richard ... as you can see, I've bought quite a few cameras, in various sizes, through the years, and I've come to the conclusion, the body shell of the Sony a77 and its twin, the a77 II ... at 5.6" wide, is about the largest I can manage. The only one I have, larger than that - at 5.7" wide, is the Canon EOS 60D ... and THAT one, I cannot manage, no matter what lens is on it. It is unwieldy, and heavy, in the extreme. It can't be used on my normal half-mile daily walk. By the time, I get back, my shoulder hurts, and I've developed a tidy case of tennis elbow. And, THIS is using a simple leather hand-grip on it. Other cameras, I have, are normally carried in one hand, with the strap hanging to the ground. This technique works fine, I've found - with ALL of the others. I rarely hang a camera around my neck, but sometimes, when carrying something in addition - like a kit bag, I may put it cross-wise across my chest, and over one shoulder. But, hung from my body, in this manner, of course - I cannot use it ... this is just to keep it from flopping around. All of the others (apart from the 60D) are okay with this arrangement.
Smaller cams - like the Sony a58 - and, of course - all bridges (all but one are larger than the a58) can be carried in any way I choose to. Although, once again - rarely do I ever carry a camera over one shoulder, or around my neck. They are usually grasped in one hand, sometimes, with the strap bunched up, into it.
The 80-400 Tokina I have (by far, my biggest, heaviest, longest lens) is usable on both of the Rebels, but, when used on the 60D, it actually smarts! That combination is just deadly ... so much so, I no longer even use the lens, nor do I use the 60D, anymore, on long walks - it pretty much stays at home.
My heavier cameras - such as the Nikon D7000, and the Pentax K-50, are robustly built, and feel solid in the hand - no doubt, partly, because of the lenses attached to them (Tokina 16.5-135 on the Nikon, and Tamron 18-200 on the Pentax.) Those combinations, I feel - are maximum for those cameras. I can put heavier lenses on them, but I don't think I ever will. They are quite comfortable to me ... but, that same Tokina lens on the Canon EOS 60D - is not. I need a crane to lift it ....
In-between these extremes are the others - the Rebels, the D7100/D5300/D5500/D3200 ... they all are comfortable in the hand, but, as indicated earlier, the D5500 is a little on the light side, which is why I've chosen to put the Sigma 18-250 OS HSM Macro on it ... to give it back some heft. That combination has worked out rather well. I used to use the Nikkor 16-85 VR on it, which did not help matters much. So, I swapped lenses with the D7100 ... an absolutely perfect move !!!!!