why not f/1.2 by Sony?

Started May 14, 2013 | Discussions thread
perry rhodan
perry rhodan Senior Member • Posts: 1,690
Re: that's not a fast lens

DtEW wrote:

tko wrote:

Don't know why people call this a fast lens.

F1.2 35MM = F1.8 50MM (there is a reason the OP picked those numbers.)

That's a cheap and light FF lens. $110 in the Canon mount. 4.6 oz.

So what about the NEX system turns a cheap Canon FF lens into an expensive and heavy Sony crop lens?

Why don't you ask that question back in m43-land?  There's it's merely not-possible (m43 would require 25mm f/0.9 to be equivalent to FF 50mm f/1.8) and for what can be done (Panny 25mm f/1.4) just very expensive.  So I don't think an m43er is one to talk.

Also, EF-to-E Speed Booster manages that pretty easily at a total cost of $710.  With autofocus and electronic control.  Or about half that cost with a Lens Turbo if you can manual focus with with focus peaking.

If this set can be done for 710 why would sony NOT be capable of doing it in one lens for less?


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