Re: Why was the larger Z mount necessary, exactly?
suteetat wrote:
Sony 50/1.2 is smaller with excellent IQ, that's pretty well established. Now I don't know enough about lens design but one
problem with Sony is the amount of focus breathing the lens has. Would the 50/1.2 GM have to be much bigger with more elements to correct that problem to the same level as Nikon? This I really have no idea. May be Nikon has to be bigger for a good reason. May be Sony will have to be even bigger than Nikon it they want to address this, I have no idea.
However, personally, I think Sony made the right compromise here for my usage. As you focus closer, the focal length becomes longer which for me, is actually useful and that gives Sony better magnification ratio. Now, if I shoot video
a lot, my view will be quite different. I also find it interesting that most other lens tend to focus breathe the other way, shorter focal length the closer you are which is a pain. So I really wonder if this focus breathing part is intentional, a compromise to keep the size down or what exactly is the main reason. Nikon is trying to place itself as a good choice for hybrid camera, Sony having a separate video division, does not have quite the same priority as Nikon. I almost tempted to get 50/1.2GM to use it with my Nikon body but the weight saving is not quite worth it for me at the moment as I am saving up for 35/1.2S
Too many lenses to buy, not enough time to use them all nor budget unfortunately
Sony has taken a different direction with compensating for focus breathing in camera. They do it in camera so that they can optimize for size, and focus speed in the lenses by not having to move elements around in the lens.
