Usually, I don't give 5 stars in a review, but in my humble opinion, this one is truly the best automatic medium zoom lens that has ever been released. It's only been a few days since I received it from a well-known store in Glyfada, and I am genuinely impressed by the work that Sony has done with this wonderful lens. The lens works on FX3, RV, A7SIII; let's hope in the near future on A1MKII, although they didn't make a significant upgrade from the previous version.
So, the GM, with just 900 grams and quite a small size, offers a very important range with a constant aperture of f/2, truly perfect. An incredibly sharp lens at all its lengths, with much less distortion at 28 compared to the Canon RF (which I also have with the Canon R5II; I've done a related review, but I will do a separate comparison for these two lenses).
The G Master, therefore, has amazing color performance with almost negligible focus breathing, which is crazy for an automatic zoom lens, extremely balanced without the barrel extending too much like in the 24-70 GMII. The well-known features are also mentioned in the description, such as the aperture adjustment from a dial, different buttons, a door on the lens hood, etc.; I won't elaborate on these.
I think this will become my second favorite lens after the 50mm GM f/1.2. I'm genuinely trying to find a negative about this lens; some mention the size of the front element at 86 millimeters as a downside, where the truth is, it is a bit of an odd size mainly because we are all used to the 82 millimeters, but it's not too bad for the filters that will be used. Personally, I always use a larger size of screw-on filter for several reasons; one of them is to avoid vignetting, but it also works well with a matte box with an adapter at 86 millimeters (I usually use the Tilta with two or three filters: one variable ND, one mist 1/4 or 1/8, and one variable polarized with the relevant mounts, etc., but also square fixed filters for other jobs). The cost of the matte box is enormous, but you can use a screw-on filter, e.g., Nisi True Color at 95mm, which I also work with, and it's perfect with an adapter at 86 millimeters; the result is superb.
It is a very expensive lens, of course; is it worth the 3.5k? My opinion is that if you are not making money from it, there is no reason to go for it, and the GM 24-70 MKII is perfect. I don't even mention the MKI because it is not worth the money at all; you can easily get a much better Sigma. Anyway, if you are a professional like me, a perfectionist, looking for even the smallest detail, wanting your work to stand out, to be easier, more enjoyable, and of higher quality, especially in this jumble (where everyone acts like a photographer and videographer with an A7MKIII and a Tamron lens), if you are a bit of a gadget lover, you like technology products, or simply don't care about money and have to invest in your work, then yes, you just buy it with your eyes closed without any second thoughts and without regrets.
*I will definitely return with further information in the future about this almost perfect lens from the G Master series. Here is my review for this lens, basically my first review on YT!!
https://youtu.be/-xqvSCZokgI?si=oPXW_mQ6saQshgxg
**Have a great time and happy shooting!