Sigma 25 1.4 for m4/3

Started Jan 22, 2013 | Discussions thread
peppermonkey
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Re: Sigma 25 1.4 for m4/3
In reply to peppermonkey, Jan 22, 2013

peppermonkey wrote

Just compare the optical diagrams of the PL25 on the micro four thirds website with the diagram in Sigma's patent filed prior to the release of the lens. They are the same.

If sigma didn't have anything to do with the optical design why would panasonic not step in to do something about this blatant patent rip-off?

hehe, seems I'm a bit slow as I just responded to your question. Basically, as the patents are the same, there has to be some thing going on between the two companies though how that is possible I don't know unless one copied the other illegally which makes no sense.

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Hubert
My non-digital gear: Agfa Isolette, Fed 2, Konica Auto S2, K1000, Yashica Electro 35 GX, Recesky, Olympus 35 RD
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Well, seems Sigma have made lenses for both Panny, Oly and Leica at one point or another. And seems Sigma holds part ownership of the original Panny 4/3 25mm lens. Though I don't know how 'part' patent ownership works.

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Hubert
My non-digital gear: Agfa Isolette, Fed 2, Konica Auto S2, K1000, Yashica Electro 35 GX, Recesky, Olympus 35 RD
http://farm3.static.flickr.com/2034/2457111090_00eafbf8a4_m.jpg
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