iShoot Improved Metal Lens Collar Tripod Mount Ring, for Canon EF 70-200mm f/4L (is/is II) USM, Canon EF 400mm f/5.6 L USM, Canon EF 80-200mm f/2.8L Lens, Built-in ARCA-Swiss Fit Quick Release Plate
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Selected User Reviews For iShoot Improved Metal Lens Collar Tripod Mount Ring, for Canon EF 70-200mm f/4L (is/is II) USM, Canon EF 400mm f/5.6 L USM, Canon EF 80-200mm f/2.8L Lens, Built-in ARCA-Swiss Fit Quick Release Plate
The comparison with the Canon model shows that this offers a better value for money and a wider range of features It is of average quality, both in terms of material and finish. My Canon EF 70-200mm is a good match because the color is similar It is equipped with a 200mm f/4. 5L IS II USM lens. In any case. I find it to be difficult to fit the lens because of its size. A lot of force must be applied to screw this in place The rubber band is perhaps too It is then necessary to raise the mount very slightly to feel secure, which in turn raises it off the lens. The mount did not hold my lens securely despite my confidence that it would. I ended up returning the mount because If this is less of an issue for you, you can pick up the mount for a great deal instead of the Canon one.
However, after a few months, the retaining collar holding the lock down knob in place snapped. The cast pot metal construction, which did not hold up under tension upon inspection after failure, was found to be the reason for the failure. Also, it only has one screw that holds the knob in place, so if the screw fails, the collar will pop open, causing the camera/lens to fall.
Although the collar is designed to restrain the lens, it does not do so in practice. It is likely that there are 10 or more When the collar is fastened and tightened down, there will be 15' of wobble.
The mount seems designed specifically for this lens, and it is at an affordable price point.
During the installation of the lens, the screw that holds the lens in place broke. I wouldn't recommend it due to the lack of quality production, even though it is cheaper than others.
A great option to mount a lens for a lower price. So far, I have not had any issues with it - just don't overtighten it.
Has a 70-percent chance of holding a job Even with a 2x extender attached, the 200 f4 L II lens is firmly I highly recommend it!.