SonySEL200600G High-Resolution Full Frame Super Telephoto Zoom G Lens with built in optical image stabilisation, SEL200600G.SYX

I'm pretty blown away by this lens. I'm using this on my a6700, which if you're reading this you probably know is an APS-C body, so I'm getting an effective focal length of 300-900mm. It is just bonkers.The lens performs in every way, exceptionally well. Image quality is fantastic, very sharp across the board, even wide open, which is very useful as this is a "slower" lens. You can get some really incredibly shots with it at this focal length and despite it's relatively narrow aperture, you can still get quite shallow depth of field!Attached is an uncropped (!!) image of the moon I took this evening with it. I've had it for about a week now, and have just found myself using it pretty much every day. It's just a lot of fun to play around with, and you get some really unique effects from this kind of focal length.Compared to other lenses that can reach this far, the value is incredible. Sony is clearly trying (and I'd argue, succeeding) to compete with the third-party lens manufacturers like Sigma and Tamron to produce a lens like this.Now, this lens is BIG, seriously big. It dwarfs my 70-350mm lens, and is also a lot heavier than it at 2.1kg. You can wield this thing free hand, but you will notice it if you're aiming it at something for a short while. If you want to do wildlife with this thing and you're staking something out, you will want to rest it on something (a tripod, a monopod, even a beanbag).You will probably also want to have a decent, and large enough bag to put this lens in. I've fit it in my regular bags (roughly 20-25L) using the included bag, but also have a proper adventure camera bag which it feels a bit safer in.I would definitely recommend this lens, it's astonishing.

Sharp, amazing autofocus, it’s not light but worth carrying if you have a particular shot in mind

Fabulous lense, a bit expensive but if you want to get in closer with ultra clear images then I highly recommend this lense. Perfect for my needs.

Important disclaimer - I am reviewing this having had it for less than a month.Second disclaimer - I am currently using it on a Sony A7 (the original A7 from 2013).That is important because to make the most of this lens for bird photography you need a much better auto focus system in camera. I am currently saving up for a second hand Sony A9: that system will perform much better tracking birds in flight.But the lens is amazing, it is sharp, fast to focus and benefits from stabilisation (something else the A7 is missing!) i took it on a number of photo walks and loved being able to really get close to objects at distance due to the reach. Still learning to make the most of it, but attached some images to give an idea of some of the capabilities.First shot at 600mm, second at 420mm, final at 200mm.

Heavy lump, but worth it if you want to pull in the wildlife to fill the frame, and good resolving power on my A7r3

Although it was a capable lens , it’s somewhat heavy I just did not feel safe conected to the camera , so the lens was returned

The hype is real. The lens is of fantastic build quality and offers great sharpness, it's not a cheap lens but it is one of the cheaper options for a telephoto lens on a full frame sony camera. Autofocus is fast and reliable. The downsides are the weight as it's relatively heavy and obviously it's very large. That being said i'm more than happy with my purchase, managed to take this photo on my first outing with the lens.

At 600mm HANDHELD the image is rock steady!This is a serious bit of kit, only wish I bought it sooner 😍