Robin Wong - Olympus 25mm 1.8 review, part 1

Started Feb 2, 2014 | Discussions thread
Olymore Senior Member • Posts: 1,728
Re: I don't understand the: "25mm of course is larger" comparison with the 45mm.

It's my understanding that the 40-60mm focal length is easier to design and build than wider and longer focal lengths.

So standard focal lengths for 35mm format were always the cheapest lenses. And 50mm (35mm equivalent) lenses on 6x4.5 format were also relatively cheap.

As m43 has the 2x crop it is actually cheaper and easier to make short portrait length lenses than standard focal length lenses.

And wide angles on m43 are actually equivalent to ultra wides on 35mm and introduce further complexity which is why the m43 wide angle primes are not as cheap as people expect.

I'd be interested if someone who knows  about lens design can confirm this though.

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