Tripod Collar Mount Ring C (WII) for Canon 70-300mm f/4-5.6L

First, I just want to address that this product is intended for the Canon 70-300mm F4-5.6L IS USM, and it fits that lens just fine. Other reviewers complaining about it being too big/small have either a) not fitted it to the right lens, or b) unfortunately received the wrong product.That said, there clearly have been some revisions to this product over time, as the product I received varies a bit from the item depicted (mostly in good ways, and certainly nothing that affects its use/function negatively).To start, the black padding/flocking on the interior of the tripod collar isn't black nor is it soft. Instead, there's a clear, glossy plastic that runs the interior with something slightly squishy underneath (could well be just the adhesive layer holding the glossy plastic ring in place). Wouldn't be my preference, but it serves the purpose just fine and allows the collar to spin when loosened without causing any undue scratching to the lens barrel, and it also holds position nice and firm when clamped down.Second, the actual tripod foot is better than what's depicted in that it actually has the standard Arca Swiss-style grooves cut into the foot itself. This a really nice feature, and I wish all tripod collars/feet had it, as it saves having to add an additional plate for most people. Honestly, they should update the photos, because that alone makes it a worth upgrade to the Canon option (even if it weren't egregiously priced). It even comes with the additional stop screws (and allen key to install) to limit how far the plate slide/travel when partially clamped in a compatible base.Everything else is as you'd expect it. Color match is definitely very close, but not quite perfect; from a distance you'd never notice, but up close (and under the right light) you can tell, but if that sort of thing bothers you, you're probably not considering this third party option. Same goes for the textured finish of the metal - it's close, but not an exact match.Construction is simple cast aluminum and it's very solid. The one place they could improve is the pin at the hinge, as there's some extra wobble/play when opening and closing, but once you've secured it closed around the lens barrel there's no play. Likewise, the knurled thumb screw doesn't have the push-lock safety mechanism like the official Canon collars to keep it from coming off if it's unintentionally loosened - but again, hardly a deal breaker and a very sensible cost-saving measure. And as long as you check that it's tight every so often (though mine's not showing any signs of loosening on its own), it's fine.And that's it. Solid, reasonably well-made, and actually pretty feature rich - especially compared to the Canon option. I'd honestly prefer one of these for my 70-200mm just for the better tripod foot. Just make sure you've got the right foot/collar for your lens and you're golden.

This tripod mount clamps securely on the Canon EF 70-300 mm f/4-5.6L on the clear space between the distance scale and the focusing ring. With the tripod mount pointed back toward the camera as recommended, the tripod mounting holes provide an excellent balance point for the lens mounted on an EOS 5D Mark II, and thus on all the high-end Canon cameras. With the Rebel series, the lesser weight of the camera should not affect the effectiveness of the tripod mount location; it should still be quite good, although I'll leave the definitive opinion of use with Rebels because I don't have a Rebel on hand to try this. Product link:  Tripod Mount Ring C (WII) for Canon 70-300mm f/4-5.6L Things that I have observed include:a) The finish of this tripod mount is gray baked-on finish or powder-coating that is an excellent match to the lens color and finish. The three main components of the tripod mount are all machined aluminum, and the thumbscrew used for mounting or rotating the tripod mount is steel.b) There are two tripod mounting holes, one each for standard and large tripod mount screws. The larger one is to the rear, where its position will better balance the heavier professional cameras.c) Because of the excellent IS of the EF 70-300 mm f/4-5.6L, you will rarely need a tripod mount, which is likely the reason that Canon does not include one with the lens. But, if you want to shoot top-notch HDR or other multiple exposures or long exposures, a tripod or at least a good monopod is a must, and the lens tripod mount balances the camera-lens combination with a far stabler and better-balanced grip than the tripod mount on the camera bottom. Without a lens-attached tripod mount that balances the lens-camera assembly, small portable tripods and monopods are of limited use for slow shutter speeds and are almost useless for time exposures.d) This tripod mount has rounded edges and a padded lens contact surface that is visible as the black inside of the mount in the product photo. This mount can be attached and rotated at will and leave absolutely no marks on the lens. I have seen reviews on other lens-attached tripod mounts that don't have the padding or rounding that a reviewer says chipped the finish on their lens. Not so for this tripod mount.e) There is an index line engraved lightly on the top of this tripod mount that is not visible in the photo. You align this with the distance mark on the focus scale to level the camera in the tripod mount for the normal or landscape orientation. If you like to rotate the camera 90 degrees for a portrait orientation, or you use a tripod on a non-level surface, you might want to include a small bubble level in your camera bag and use it to adjust the camera bottom to vertical or horizontal. If you have a quick-release tripod mount with a bubble level, leave it on the camera bottom.There are only two downsides for this product:1) It's not a genuine Canon product, and thus doesn't have the red Canon logo etched on the side.2) It's shipped by postal services from China, which takes a while to get to home delivery in the USA.When you look at these things, they don't seem important because this is clearly a high-quality product that will be of use for as many years as the lens. And, the price reflects the small-business cost as compared to the far, far higher cost of a low-volume high-quality product in the Canon manufacture/storage/shipping supply chain.

The lens mount arrived in a timely manner, even though it came directly from China. The ad is a little miss-leading about that as I thought the Amazon mount would be coming from the USA. I actually placed the order for this mount both at Amazon and from E-bay. The one from E-bay was half the price and arrived 3 days earlier. The one purchase from Amazon has a second mounting hole (3/8") for a tripod where the one from E-bay only has a single 1/4" x 20 mounting hole. Comparing both on the same lens: The one from E-bay is easier to install and remove. There almost seems to be an alignment problem with the thumb screw and mating threads on the one from Amazon. The thumb screw itself has a better knurl from Amazon. Both hold the lens tighly and easily mount on a tripod. Neither one is a perfect color match, but both are very close.

Great product, fair price and fast shipping

Not exactly sure what the branded version of this would bring to the table, but this piece was solid. Fit the Canon 70-300MM perfectly. Easy to attach/detach. Fairly light weight. Worked perfectly with my tri-pod. Not much more I can say, but I found it to be a great value.

The collar was designed for a different but very similarly named lens. I did not realize it until it arrived, so had to return it

This collar ring seem well manufactured and fits well on my Canon telephoto. It also serves as a "balance" to set the lens down when not on a tripod.

Anello di ottima fattura, ben costruito e solido aggancia molto bene sull'obiettivo 70-300 serie L della canon. Pienamente soddisfatto

Great fit on my canon 70-300mm .Also really well made and much cheaper than canon original.Recommended.

Convient parfaitement au Canon EF 70-300mm 4-5.6 L IS USMLa finition est tout à fait correcte et comparable à celle d'un produit CanonRavi de cet achat

Die Handhabung ist einfach, das Teil hält Objektiv und Kamera fest und ohne Spiel. Der Preis ist deutlich niedriger als das Original und auch die Lieferzeit war in Ordnung, sogar etwas kürzer als angekündigt. Es gibt einen kleinen farblichen Unterschied zur Abbildung auf Amazon, denn der Innenring ist nicht schwarz, sondern hell. Das ist mir allerdings völlig egal, da dies weder die Funktionalität beeinflusst noch man es im Einsatz sieht.

This item fits and is the closest match to lens colour,strong and reliable with my Manfrotto bipod