Fotga Built-in Aperture Control Adapter Canon EF Lens to Fujifilm Fuji X-Pro1 X-Pro2 X-A1 X-E1 X-E2 X-T1 X-T2

This is a review of the Canon-to-Fuji X adapter with manual aperture.The adapter fits ok, but if the aperture is set to anything other than wide-open, the vignetting is visible. I know that this was mentioned in an earlier review, but I wasn't sure how bad the vignetting effect is. Just be aware. I guess this could be used to reduce the aperture if light was too bright such that even changing ISO or shutter speed was not enough, but then the picture you end up with would only be a small circular image surrounded by black.

I chose this adapter because it included a manual aperture control, unlike many of the lower priced adapter. There are no electrical connections, so don't expect to use autofocus or the camera's aperture controls. The aperture ring is a good tension to keep you from moving the ring accidentally. It is also "declicked," meaning that the transition to smaller apertures is a continuum; while there are printed number guides on the ring (1-9), there are no clicks to let you know when you have opened or closed a stop. Since the camera has no idea that there is a lens mounted without the electrical contacts, it certainly doesn't know what the aperture is that you have set. Also, remember to set your camera to release the shutter without a lens attached.My first copy came with a loose lens release lever, which jammed and then broke off. Luckily, the lens could be removed after the lever broke off (the lever is plastic, although I think the locking pin may be metal). I contacted the company, who graciously immediately sent out a replacement. The replacement works fine, with the release lever sliding easily back to release the lens. So the seller (Run Shangyu) is part of the reason for the good review.This product is probably best for someone who plans to use existing Canon lenses experimentally or occasionally, because although one can manually focus the lens, the lack of electrical contacts means that the manual focusing aids built into the camera won't activate, because the camera doesn't know you are manually focusing. You can set the camera to zoom in closer (a big help), but probably the other fancier manual focusing aids won't be activated.Also, the declicked aperture control means that you can't adjust the aperture with your camera to the eye (I'm old school like that). In fact, even if it was a clicked, it probably wouldn't help, because the ring affects the aperture differently with different lenses. For instance, with my 8mm fisheye, I find that I go down 1 stop at about ring setting 7.5 and 2 stops at 9. With my 50mm lens, I go down one stop around 5.7, another stop at 7, and a third stop around 8. By 9 I'm down about 5.7 stops. Also, there is definitely a vignetting effect, particularly with the wider angle lens. This may not be a big deal with portraits, in which vignetting is actually considered a "look", but it would really limit landscape or architectural shots.Of course, you can shoot with the aperture ring wide open, just like the cheaper adapters with no ring, and of course, using a lens with a built in manual aperture control is no problem. You can just activate the adapter's aperture ring in a pinch in brighter light and accept the drawbacks of the vignetting and uncertain aperture. It is still a useful tool for occasional use and experimentation, and I'm giving it high marks because you can't expect a $25 product to do the same thing as a $400 adapter.