Works great with the coupling to my Canon Rebel Tsi
592089
The TTL works great. We'll have to see it it keeps on working as great as it is right now.
I have had no issues at all. But I have seen other complaints. The price was great compared to the Canon
Flash. Like I said we'll see. But so far it's great. All modes work well as I tested each type.
1025732
I purchased this for use with my Canon Rebel T3i camera. I do professional photography, and wanted to be able to expand my photo shoots so that I don't have to be behind the lens for every shot. The packaging was good and very easy to open. The remote comes with a little velvet pouch to hold the remote when not in use. The directions for use were very straightforward and simple. The only reason I gave this a 4* review instead of 5* is because the only time the remote works is if it is pointed directly at the front of the camera. I was hoping for a more direct connection to the camera where I could have it hidden in my hand or my pocket and be more discreet about it being in my hand rather than having to point it at the camera for every shot.
3649570
This cable is used to connect a CamRanger<a data-hook="product-link-linked" class="a-link-normal" href="/CamRanger-Wireless-Transmitter-for-Select-Canon-and-Nikon-DSLR-Cameras/dp/B00AA478UQ/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">CamRanger Wireless Transmitter for Select Canon and Nikon DSLR Cameras</a>&nbsp;to a Canon 5D Mark III.  The angled design is perfect for hanging the CamRanger pouch from a tripod when I can't mount it to the hotshoe.
4877529
After a couple of adjustments I was able to use it with my Canon HFG20 with out issues.
801651
Works great with my ol' Metz 45 CT-4 Strobe on my 70D DSLR camera. I have to put it in manual to sync though, but, I knew it would hafta be that way. The ol' strobe still works and once I set it to the same aperture as the camera and at 1/100 sec it takes great images. Always did on my ol' Minolta SRT100. This is the answer to my connection  to the camera since they took the pc connector off the newer cameras.
2304335
Works Great! Connected my camera to laptop to shoot tethered to Lightroom 5.5
4398851
I just got it and tried it out for what I bought it for and it worked better than expected.  I plugged one end into my Canon Digital Rebel XTi and the other end into my Samsung Galaxy Note 5.  (A 9 year old digital SLR camera and a 2 week old smartphone.)  I turned on my camera, and the phone automatically recognized it as a camera and asked if I wanted to open it in Camera Importer or Gallery.  I chose Camera Importer, and it showed the photos on the camera and let me choose the ones I wanted to import.  I selected the 4 test pictures and they transferred in a few seconds.  I bought it to bring on vacation with me, so that I won't have to either bring a laptop or wait until I get home to share the pictures.  I wish I bought this cable years ago.  It is small and thin but it looks like it is made with good quality materials.
4601407
works great!  I use it with my Canon Rebel XTi. There's an "S" button for immediate shot and a "2S" button for a 2sec delay (which is more useful because then you can hide the remote in your pocket during those 2 secs).  The range is sort of limited, about 15-20 ft (but I don't think the more expensive Canon version has any better range)
The "S" "W" and "T" buttons don't seem to do anything for my camera.
1037799
Excellent for time lapse photography.  I bought the adapter that I plug into an electric outlet [Kapaxen ACK-E8 AC Power Adapter Supply Kit For Canon EOS Rebel T5i / T4i / T3i / T2i / 700D / 650D / 600D / 550D / Kiss X6 / Kiss X5 / Kiss X4 DSLR Cameras] so that I wasn't having to change out he batteries. Make sure that you have fast large cards, so that you don't have to keep changing out those.  I set it up and go to bed.  Stop it in the morning.
2823770
This works just fine with my 5D Mark III.  Like a few others have said, the three-pin connector that connects the receiver to the camera is very loose.  Unlike a Canon wired remote, it does not have a locking sleeve to snap it into place and make it easy to remove (See Photo. Canon connector on top with silver sleeve; Vello connector is black on bottom).  If you seat the connector into the Canon body, and put a little pressure on it, it will hold it in place, but it is then very difficult to remove.  A better cable would make this a 5 star product.  Since it is just a standard 1/8 (3.5mm) stereo cable connecting to the receiver on the other end, Im going to see if I can find a better cable.
2547925
Works correctly with my T2i. The dummy battery insert fits nicely into the camera; it's easy to put in and take out. I'll be using this as a part of an astrophotography setup and will have more comments to add in six months to a year.
3355062
This adapter fit really well on my lens and my canon 6d
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.
489639
When I purchased this I was a bit worried that it wouldn't work with my Digital Rebel, but was pleasently surprised when it worked without a hitch.

Might be a bit slower than a solid state CF card, but I don't have the stats to back that up.  Just observations.

Final analysis: Good device for most cameras.  With the price of solid state CF card's falling, though ... might be better to get something without moving parts.
2740879
Great adapter for connecting my Sony a7R to my Canon T-mount and adapter so I can use my Sony to do Astrophotography!
3172961
Deserved Rating 5 of 5
I just got through testing it out and it works great with my Canon EOS Rebel SL1. Pleasantly surprised since a previous purchase did not work with my camera and I wanted a remote I could rely on to take family shots with me in them. I have lots of pictures, but very few include me. It's great, works as described.
1521126
I've used this in My Canon Rebel T3i and it has been great, I've never had any issues with it, it has performed perfectly.