I have been using a grip/strap on my SLR cameras for about 20 years. It has worked well with all my lenses up to the Canon 400L I use now for birding. I like the freedom of hand-holding my camera if possible and I know I can get excellent results with my Canon T2i DSLR with the 400L. I’m not doing an advertisement for my setup as such, but/and I know some other lenses may be too large and/or heavy to hand-hold, so I am not addressing that.
The grip that I am talking about is not to be confused with a battery-pack attachment. Today’s DSLRs have excellent batteries and are able to work for many hours without a recharge. Of course it’s a factor of how much you shoot, and if you fire off endless frames you may feel the need* to have a battery pack. But, my battery weighs just 23g; I would much rather keep my camera/lens weight down and slip the spare battery in my pocket when I think I may be shooting like crazy! I shoot RAW, but do not shoot continuous. My keeper rate is likely higher than many who shoot away!
(*sometimes the ‘need’ for a battery pack is misunderstood. There are those who think it looks ‘cool’ to have a bulkier camera, plus there are those who get caught up in the online hype about gear. Again, for me weight is a major factor, and if you don’t need it don’t use or buy it!)
With my old Canon film cameras I used a Canon grip attachment costing about $75. My current one is made by Hakuba, sold at B&H and Amazon for about $14. and it fits most DSLRs. It’s as well made as my Canon one. It has a tripod socket if you need that, and easily slides aside for camera battery changes (on my T2i).
My shoulders have some arthritis but I find that having a strap like the Hakuba** really helps me carry and use my camera. The strap is always attached, and is also great for travel and my studio work.
**There are several other brands of straps as shown at Amazon.














