The provided by the camera manufacturer camera flanges are a good advertising medium, in the long run but not comfortable enough. The slip resistance can also be desired. The Op Tech Pro Strap provides what I miss at the other belts. Another advantage: The actual belt can be removed quickly, thanks to the quick release buckles, so that only the connecting pieces remain on the camera body. This is useful when shooting from a tripod or a heavy telephoto lens (70-200mm from / f2.8 upwards) used, which should depend on its own shoulder strap eh, z. B. the Sun Sniper Pro "Steel & Bear".
Mostly I use two camera body (with wide-angle and telephoto) with corresponding weight. So far, the comfortable padding of Op Tech Pro Strap has my neck very relieved. The non-slip studs hold the belt in place when wearing a camera times over one shoulder.
The Op Tech Pro Strap has two types of connectors: supplied as standard a nylon webbing, as we know it from other camera straps. In addition, connecting pieces can be purchased that look like thick shoelaces and are equipped with the same buckles. I used the time both going but me down a couple of belts so that all cameras are retrofitted. So pretty I do not trust the "laces" "and does not want to be wise only from damage.
Preliminary Conclusions: In its standard version of Op Tech Pro Strap his money's worth. In a year I'll possibly add to this review.