Originally posted by boriscleto You rented a 645 lens to use with a K-3? Interesting...Or are you talking about a Sigma 150-500? The 645 FA 150-300 is a 2 lb lens, the 150-500 is a 4 lb lens. I have a 150-500 and mainly use it with a monopod screwed directly into the tripod mount on the lens...I have also used it with a sling strap attached to the tripod mount on the lens.
Perhaps I have screwed up the intial message. I have rented, in the past for a trial and am planning on renting again for the trip, a Pentax 150 - 450 mm f/4.5 - 5.6 D FA DC AW.
It will come with a tripod ring but what I am concern about is when I don't have it mounted to a tripod or a monopod but simply slung from my over the shoulder Optech utility sling
Utility Strap - Sling | OP/TECH USA
is there any reason to be concerned about the weight bearing connection between the camera body of either the K 3 or K 5 ll and the lens
attaching the lens to the utility strap would add a safety element I hadn't thought of but if the lens pulls off the camera mount, it still would put the camera body "out of action" if you understand what I mean
does this clear up any confusion I caused?
---------- Post added 09-05-16 at 08:47 ----------
Originally posted by chibae My primary concern is the weight of the lens hanging down while walking. If I have a free hand I can reach down and support the lens. But, too many times I stop and put up my bins leaving the camera and lens hanging supported only by the camera strap. Which in turn leaves the lens supported solely by the camera's lens mount. I already have binoculars hanging from a chest harness and a belt pack on. I'd prefer not to have anything else hanging off my body except by a shoulder strap..I usually carry the camera with the strap over my shoulder rather than around my neck.
I am a great believer in repurposing things I have bought in the past (some call me cheap). I have an old multipocketed vest from Cabelas. similar vests can be found everywhere
could you slip the end of the lens partially into a pocket to help support it when you can't use your hand?