The product is basically as advertised and I haven't had any problems with functionality at all. The keys are a little bit bigger than I am used to so I am adapting to them but not completely loving them. It seems like both the size of the keys and the spacing of them causes me to miss buttons or accidentally hit wrong keys sometimes, but I figure that's more of a personal adjustment than a problem, just keep in mind while shopping. I don't find it very ergonomic for that reason. I like the rainbow lights, but of course definitely note that you cannot change it to one static color like green or white or whatever. I actually really wish you could just turn it to white because I wear really thick glasses and colors in my peripherals can sometimes split and become distracting, and that happens a littleI am still adapting to the size and placement, as I mentioned. It's just worth noting in case you're like me and would find that a little frustrating.

I had a SB600 from Nikon I tried to use with my Sony a6000 or Olympus Pl2. Whatever i did, the flash was too bright. I had no problem using the Neewer TT560. I bought two of these and set them up as slaves to the built in flash. Light is light so what isn't to like. I am very pleased with th equality of the construction. These units are very well bult for the money.

I got this lens a while a go...the first copy was defected but the second one was the right one....is very sharp considering that is not L series...but the focusing system is very fast...I can focus almost instantaneously...is fantastic considering the fact that is 4-5.6 lens....for everyday shots is very good...I was debating between the version of 70-300 L and this one and I'm glad that that i choose this one...considering the price.... now compared to the 70-300 Nikon version is faster and sharper without doubts,, i have Nikon and canon full frames and regarding to the 70-300 range...this canon beat the Nikon one....for sure...

Part 1 - Minolta MD to Sony NEX adapterTechnically, it slightly overshoots infinity but the issue is easily corrected by dialing back the focus ring just a tad --- Not exact but clearly better than not-at-all.Although very light due to extensive aluminum usage, the build quality and fit-and-finish of the adapter is superb. Connections on the lens and camera mount sides are tight and precise --- absolutely, zero slop. The top of the lens release button is flattened making the lens removal process very easy and comfortable.Other notes:- There are no electrical connections so focus and zoom must be done manually on the lens itself- When mounting the lens, turn the adapter clockwise till you hear a "click"- Tested with a Minolta 85mm f/1.7 Rokkor-X MD lens mounted to a Sony a6000 camera-----------------------Part 2 - Nikon Ai to Sony NEX adapterEdit: Based on my positive experience with the Minolta MD adapter, I also purchased the Nikon Ai adapter later.As with the Minolta MD adapter, the Nikon Ai version focuses beyond infinity a tiny bit. Fortunately, the same solution applies - dial back the focus ring and the horizon will become crystal clear. The build quality is impeccable and the finish is smooth and clean of burrs or machine marks. Connections on both sides are taut and precise with zero play.Additional notes for Nikon Ai adapter:- No electrical connections present so focus and zoom must be done manually on the lens.- Unlike the Minolta MD adapter, mounting the lens for Nikon adapter requires a counter-clockwise turn until you hear the "click" of the locking mechanism- Tested with a Nikon Micro Nikkor 55m f/2.8 Ai-S MF lens mounted to a Sony a6000 camera

I do not use these for the UV filter but as a good quality, low cost lens protector. That said:My 1st Tiffen was a 55mm UV Protector I got for the kit lens that came with a Sony a7ii; an FE 28-70. I was so happy with the purchase that I have since purchased three additional Tiffen UV Protection Filters. One is on a Sony E 55-210 I bought used and one is on a Samyang 35mm I bought new. The one I am writing this review for I assume is still on the Sony FE 50mm I bought new but returned and forgot to remove the filter.The point? I treat my lenses, new or used, like I treat a cell phone. That being the phone stays in the box until I have a protective case for them and lenses stay in the box until I have a protective filter to pair them with. And the one I forgot to remove from the returned lens? That is how confident in the Tiffen filters I am. Once I put one on a lens, I never need to think about it again.I have used several brands in several sizes ranging from the cheaper Altura and Polaroid to the mid range Hoya and B & W.Where does Tiffen fit? Well they are no Hoya or B & W but I am no professional photographer. I am an amateur who mostly enjoys street photography when I travel and for my money Tiffen is the best. Yes, you can spend more and get better glass and if you really have reason to worry about ghosting you should look for a higher end lens. That isn't me saying ghosting has been a problem for me. I normally use a lens hood and I think that helps cut down on light reflection. I have noticed some minor issues with it on some shots I have taken in direct bright light conditions but not enough to justify the higher price.I do not stack filters as I haven't had a need to so I can not give an opinion on that topic. I would assume that the risk of ghosting would increase.The short version is this. The Tiffen UV Protection Filter is well made with good quality glass and a metal ring with threading I do not worry will cross thread or strip. They do what I need by protecting my lens. If I was buying a ND or polarizers I might buy a more costly brand but for everyday protection, Tiffen is all I need and the best for my money.Tiffen say it best in their own product description; A small price to pay to protect your investment.

I found it easy to use. If you are used to a GoPro, you will have no problem adapting to it.

When I read the news of Canon releasing a new Mark II version of this lens the first thought that came to my mind was why? Has Canon lost its mind? Why would you mess around with a lens that has become a staple of nearly every professional Canon user in the world? Since this lens was released in September of 2001 it has earned a reputation as being one of the most rugged and sharpest lenses of its kind. Professional photographer and photo equipment reviewer Ken Rockwell, for example, borrowed this lens from a friend to test who had dropped it off an elephant to the cobblestones nine feet below while shooting in India. Even with that event in its history Ken gave it a stunningly positive review! Many of the most famous photos taken in the last nine years were taken with this lens, including many of the photos that appear in Canon's own sales brochures. In the lens life cycle, if such a thing exists, this lens is hardly an old timer at nine years old. With its proven powerful robust image stabilizer, legendarily sharpness, and tank-like build, one cannot help wonder what the motivation for fixing something that's not broke is. I think the real motivation was keeping "pace" with Nikon and raising prices.Canon is seen more and more as falling behind its nemesis Nikon. With the recent release of Nikon's VR II vibration reduction which supposedly can work up to four stops, Canon had to fire back with a "new" version of the image stabilizer on its own lenses. Thus IS II was born. Needless to say, the new Nikon 70-200 lens retails for over (...) on Amazon as opposed to this "old" Canon lens which sells for about (...). It's expected that new Canon 70-200 2.8L IS II will retail for at least (...) if not more. Is the new lens really worth (...) more than the old lens still being sold? I own this "old" model now for about six months and the only way I can see improvement is if somehow Canon could recreate this same lens, ruggedness and all, at half the weight. Now that would be something worth paying (...) or more for! In reality, the new model will actually weigh 20 grams more than the "old" model. So much for progress!I have shot indoor and outdoor shots both hand held and with my Bogen automatic mono-pod with this lens. In both cases the results have been nothing short of amazing. Clear sharp images almost every time with magnificent color and superb brokeh (blur quality). The image stabilization is first rate and runs hard and strong. Don't be fooled into saving money buying the other versions of this lens. If you ever expect to be free from using a flash and get great results in reasonable natural lighting, this is the lens to buy. If you can't afford to buy this lens then save up for it. If you compromise you may be sorry later.I believe that any changes Canon has made to the new lens will largely be undetectable by professional and amateur photographers alike. The only exception to this is the added weight, increased price, and the very slight ability of the new model to focus closer (about 8"). It's also hard to see how the current powerful image stabilization could be made much better. At some point it all becomes a matter of subject movement and no stabilization system can deal with that other than using higher shutter speeds. That said, the more important question to ask is whether Canon produced a "better" lens at all? Currently we have no test reviews to look at and it is entirely possible that the new lens may actually under perform this "old model". We just don't know at the moment. For my money I would grab this "old" model while you can. Not only is there hardly any risk, but in all likely-hood the after market value of this lens may soon rise.MY UPDATED COMMENTS: Despite some new positive reviews on the new lens, I still doubt that most will notice much of a difference between the new and the old lenses unless they really blow up the image. The old lens produced images that graced some of the top publications worldwide for the last 10 years with nothing but praise. Canon has effectively fooled you all to push though a huge price increase never before seen for an upgrade of the same type lens. It seems the consumer is once again the victim and they don't even realize it!

It is light in weight. I use it to protect my Sony lens.