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: It features an outstanding Image Stabilizer (IS) system that provides up to 4 steps of correction. DustinAbbott.net highlights its "remarkable" ability to keep the viewfinder stabilized even with an extender.

If your "large 100" refers to carrying a 100-400mm lens or heavy gear, this backpack is often the top recommendation. image_large_100

Beautiful, smooth bokeh characteristic of the G Master line. Built-in Optical SteadyShot for stable handheld shooting. Shimoda Action X50 V2 Backpack (The "Gear Carrier") : It features an outstanding Image Stabilizer (IS)