As a photographer I can always recommend Canon. This is a great product and it really has only few downfalls to it.1. AF is very slow, so busy scenes are not for this product2. With adapter to use normal EF-S lenses the AF slows down even further3. EF-M lens availability is very limited, which brings you back to the point 2 above.But you get bang for your buck if you can live with the above. Digic 5 processor, touchscreen and the great Canon quality if you shoot more portraits, night scenes and landscapes in general. If you have few canon ef-s lenses you like and need cheap but great EOS experience on the road while not wanting to carry e.g. heavier 6D, 5D bodies... then this is great way to go!

This is a great monopod...especially for a micro four thirds (MFT) setup. Light, quick to set up, and sturdy, it has almost everything I was looking for. I wasn't crazy about the head though...and upgraded it to a MeFoto type head...big improvement for a nice monopod.

The wide zoom--16-35, 17-35, 17-40, 20-35, et al.--has been a mainstay of pros, especially photo journalists, since the early 1990s. These focal lengths are ideal for sweeping views and shooting in tight quarters, and are easily hand holdable. The 17-40L is my go-to wide zoom for landscape shooting on my 5D MKII and 6D. Important note: if you use a 1.6X cropped frame camera, e.g., Rebel, 60D, 70D, etc., this zoom will have the field of view of a normal zoom, i.e., 28-65mm equivalent.CONSTRUCTION: Canon's EF 17-40 4L USM brings together precision optical design, blazing AF, durable construction and silky smooth zooming. At $750, it's more affordable than the EF 16-35 2.8L USM II, but offers similar build and optical quality. The hybrid metal and polycarbonate construction and quality components make the EF 17-40 4L USM tough as nails, but a lightweight 475 g (16.8 oz). Plus, the moisture and dust seals, including a rubber O-ring on the lens mount, make it a great choice for jungle and beach shooters. Canon recommends use of a clear or UV filter to complete weather sealing (front element moves slightly when zooming).The EF 17-40 4L USM is a classic two-touch design: manual focus ring near the end of the barrel and zoom ring near the mount. Handling is nimble and decisive. Both zoom and focus mechanisms are internal so there is no nested barrels. Plus, internal mechanisms are less prone to sucking in dust than front extension designs. Unlike most AF lenses, the manual focus ring is large, ribbed, rubberized and nearly as smooth turning as the manual lenses of yesteryear. The satin black finish is elegant and the overall appearance similar to the EF 16-35 2.8 USM II and EF 24-105 4L IS USM.The filter size is 77 mm, making filters expensive. This size is common for L series optics, so you can share filters with the EF 70-200 2.8L IS USM and EF 24-105 4L IS USM. The clearance from the edge of the front element to the filter threads is huge and, subsequently, normal thickness filters such as a Hoya Super HMC UV do not vignette on full frame cameras like the 5D MKII or 6D.AUTO FOCUS: This lens sports a ring-type USM (Ultrasonic Motor) that drives an internal lens group and AF really rips. The front element does not rotate nor does the barrel expand or contract during focus and zoom operations. The motor of the EF 17-40 4L USM is silent during AF. It has Full Time Manual (FTM), allowing you to manually focus without switching out of AF mode. If you prefocus manually, the distance window in meters and feet is handy. AF worked flawlessly on my 5D MKII, 6D, 5D, A2, 3 and Elan 7E. That is, AF is fast, accurate and decisive.IMAGE QUALITY: The constant F4 aperture is a big plus for hand meter users and those that prefer manual or aperture priority exposure modes.I found EF 17-40 4L USM sharp and contrasty. There is slight improvement when stopped down to F5.6 or F8, but it is almost as good wide open. The contrast and snap of this lens is apparent even through the viewfinder. After all, there's exotic glass in there, e.g., 1 UD and 2 aspherical elements. The short end, like most wide zooms, shows some barrel distortion. The long end has a small amount of pincushion distortion. For most use, distortion isn't a problem save for architectural photography.Flare is well controlled for a zoom. However, some flare and ghosting may occur with bright sunsets. Use the included lens shade (EW-83E) to protect the lens and help keep flare in check. Incidentally, the included EW-83E is a weak design: too shallow and dish-like, yielding a minimal amount of protection. The EW-83H, a deeper and narrower hood intended for the EF 24-105 4L IS USM, gives better protection and does not vignette at any zoom setting on both full frame and cropped cameras.FINAL BLURB: I bought the 17-40 4L in 2003. Ten years of punishment at beaches, waterfalls, jungles and deserts and it's still going strong, having outlived at least a half dozen of my cameras! If you need the versatility of a wide zoom, this is among the best. The EF 17-40 4L USM has similar build and optical quality as the famous EF 16-35 2.8L USM II, but at nearly half the price, weight but shy a F-stop. For discriminating hikers, travelers, landscape shooters and serious amateurs this zoom deliverers quality without breaking their shoulder or bank and can take the knocks they dish out.

The adapter is good, delivery was also very fast, i got it just in 1 day.. But if you really wanna use EF or EF-S lens in mirrorless cameras, you have to keep in mind that the sharpness will decrease by a little amount and you you have to focus the subject very correctly, otherwise the picture will become blurry(specially for the prime lens)..

It's an adapter - it allows me to put my EF glass on my EOS-M and they are fully functional when mounted. AF, Metering, aperture control - all good. Made of metal and I appreciate the tripod mount on it - handles my 70-200 f2.8 IS II without a problem although it looks pretty much like a rear lens cap when setup that way :)

My experience with Canon has been with the T3i, T6, 7dmk2 and 6dmk2. Each of these cameras were good in their own ways, but were not perfect. IQ was my biggest complaint, especially in low light.The R6 definitely has better IQ than these previous cameras and performs much better under low light conditions. The eye focus feature is helpful but takes some practice to learn. The images I get with my R6 compared to my 6dmk2 are noticeably sharper and show better tones overall.I am currently using only EF lenses on my R6 thanks to Canon's brilliant adapter! All my EF lenses work flawlessly on my E6 thanks to Canon's adapter. I'm waiting for Canon to release more primes in the near future to keep my R6 kit lightweight.As for the negatives, I'm not a fan of electronic viewfinders. Nothing beats the optical viewfinders of Canon's older dslr's. Also, a top lcd display would have been nice, but it's not a dealbreaker for me.Overall, I highly recommend the R6, especially if you own multiple EF lenses (just remember to purchase the adapter).

I like how the AF of my EF lens attached to the Commlite AF adaptor EF-EOS R, is not affected. The camera and lens respond rapidly to capture moving subjects.The only thing I don’t like is that the lens feels a smidge loose in the adaptor, but it does not affect the image quality or how the camera responds (if that made sense)Overall very pleased with price for what you get.

I just went through the debate between the 40D and XSi. I finally chose the 40D since it is supposed to be built to last, and the recent $200 rebate from Canon placed the cost ($950 body only) on par with the XSi ($800 body only) at the time of this review. Up until now, I have been using an XT and in only 2 years (and about 6000 photos) the auto focus (AF) LEDs began burning out. One is completely gone and the others have dimmed considerable. I have not found anyone else with this problem so it could be that I had a bad XT. Never the less, the XSi has similar dot type AF LEDs and I was worried that an investment in the XSi would lead to another camera with a limited lifetime (I depend on these LEDs a lot).Although I liked the compactness and lightweight of the XT, little did I realize how convenient the 40D is for fast switching of settings. I love this! I won't go into all the positives/negatives of the 40D as it has been beaten to death by now. However, I will mention a few minor pros and cons that are either seldom mentioned, or not mentioned at all.Pros:1. Much better AF LEDs - more visible squares instead of little dots, hopefully longer lasting.2. More multi-controls and generally setup more user friendly.Cons:1. Auto WB is a little off - especially with incandescent lighting and AUTO setting (seemed more accurate on my XT)2. Thin male pins for the remote connector. Male means that there are pins instead of sockets. The sockets are on the switch itself (RS-80N3 or equivalent). This means if the thin pins bend, the camera gets hurt instead of the cheaper switch. I wish Canon had stuck to the 1/8" stereo jack as that solution was much more rugged and allowed the wire to rotate (the wire on the RS-80N3/equivalent point out in the direction of the lens only).Hope this helps!