Works on my Canon 6D Mark II
933077
Have only had this for a few days but so far so good working on my Canon 6D Mark II.  Seems cheaply made, but then again, so is the price so a seemingly decent value if it will last.  One item that may seem obvious and I imagine its true for all remote shutter releases, but if you have back button focusing enabled, or more specifically AF on the camera's shutter button disabled, pressing the wireless shutter release half way down will not focus the camera.  You need to remember to hit the assigned AF button on the camera prior to taking your picture or re-enable AF on the cameras shutter button to focus.
4577374
Works great right out of the box.  Fits my Canon Image Class LPb 6230
1688690
Works great but please make sure you buy it for the cannon 5d mark III. I mistakenly bought it for the mark II but it works well for the 3. Enjoy! Happy shooting!
4186383
What an excellent choice!! It does most of the same things the Canon Battery Grip does but at a much lower cost. I also had the Neewer grip for my old 6D and had a great experience with it. I highly recommend this grip for your 6D MKII. BTW, shutter, focus, etc., controls are at the bottom of the grip and work great!
556216
I use it with my Canon 430ex II speedlite and it's perfect. I use it on my tripod or as a little table stand when doing off camera flash work.  No stability problems or issues.  It works great.

If you lost the mini flash stand that came with your flash or don't have one, for the price, this is a no brainer.
1178876
I lost the last one I bought for my Sony a6000 & it was really snug. Once you take it off, It's so small and dark you WILL lose them.
Buying one at $5 is just not cost effective for me.  Funny, I find that this fits perfect on my 7D markii. I bought a pack of 10 generic ones for my canon and wound up using those for the Sony, which fit perfectly.
3801383
Works great on my Canon EOS 5D Mark II, adhered well, great to see through.  Would definitely recommend for a screen protector.
4015735
I use this on my Nikon 80-200 f/4 ai-s.  It does what it is supposed to do.  I have not complaints.
1201679
Works great with my Canon 5d Mk3.  Fast enough for continuous shooting and big enough ... well the camera says it has 1500 photos
to go.  Truly wish I had bought this years ago.
486077
I purchased this for use with my Canon Rebel T2i, but the T2i has a little switch in the hot shoe that prevents the built-in flash from firing when there is an accessory installed in the shoe, and the Puffer bracket was closing this switch.  I had read online reviews that tested this in the T3i and other Canon bodies without any problems, so this may just be specific to the T2i.  I emailed Gary Fong's support and they sent me a prompt and detailed response suggesting only inserting the bracket half way and other solutions, which either didn't work or didn't seem like a good fit.  Finally I used a utility knife to **carefully** trim about 7-8 mm of plastic from the bracket where it was engaging the switch, and this was sufficient.  Now it works great.  See the pictures I uploaded for details.  I can't completely blame Gary Fong because Canon designed the camera, although Gary Fong's web site says it is compatible with the T2i.  That notwithstanding, this is a great product and I'm glad I bought it.
4454887
Bought as a backup for the OEM in my new Canon 6D. Have had to use it several times, and it performs well. I do not think it has the same performance as the original, but works well at much less than half the cost.
3617264
Owned 6 months. Using this on top of my Canon 5D Mark ii and also a Canon t2i. Seems to work great. I haven't had any overheating problems. I also have the Yongnuo transmitter and I use this speedlite on a cheap softbox and stand combo.
After reading the instructions this speedlite is pretty easy to use. Adjustments to power are very easy. I don't think it can pair to the camera so it works automatically with the camera. I believe it is manual control only. But it seems to work good for my use as an occasional flash photographer.
2176969
Works well with my Canon EOS 5D mk2.  I only have a usb 1.0 reader at the moment so I'll have to upgrade soon.
4692996
It fits my Canon 1D Mark II (1D2) perfectly and didn't cost $35 for the same thing from Canon.
3059836
I used this for an underwater shoot in a pool. Worked great on my Canon 5D mk II. If you're going to be doing a lot of underwater shooting then getting a hard plastic underwater housing is probably a good idea, but if you're just playing around in a pool, this worked great for it's price.
3364530
Using on my Canon 10-18 mm lens. So far, no problems at all. Clean, easy threading
695177
Works absolutely well. I use it for my Canon M6 and my 50mm lens and it all clicks and works smoothly. I wish Canon would step up their EOS lens games if they wish for mirror less cameras to be more relevant, but for the meantime this adapter does everything the OEM does at a fraction of a price