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The hand strap is only useful if you dont like your sholder strap.Your camera will not fall from your hand but its not that comfortable. Puting your fingers in and out will take a bit time if you want a good grip and tight the strap almost all the way. It also resist your fingers to use all the function button and mode dials smoothly. The quality is not that good. The borders of the grip is getting damaged by the friction with the nylon strap from the very first day. So if you want somthing only for getting the job done at a lower price, you will like it. But if you are expecting somthing good that will be comfortable and a good quality strap rather then only doing the job, go for somthing else.
If you are person who travels frequently and is commonly using camera while trekking or in overcrowded places I would suggest this. It's comfortable even for long time usage. Unlike neck strap you can move much freely and venting or sitting down is not a problem. In crowded environment you don't have to worry about it hitting people or things and is quiet firm and tightness can be controlled. For the price under ₹500 it's a great buy and in that budget I would say it is a must have in your camera bag.
I'm disappointed with the quality of the plastic base. Yes, this strap will get the job done, but not sure how long. I bought this by seeing so many positive reviews. But I couldn't like the strap. For now, I'm using it, but I'm into professional photography, and soon I will have to replace the Strip with better ones.
Really have to get one if you have got a heavy camera with a heavy lens... It just minimizes the effort rather than shoulder straps... Good material quality but eith the design, i am facing a problem which i cannot open the camera batter door with the strap on the camera...