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Viltrox, Ttartisan, 7artisans and DJ Optical

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mambo View Drop Down
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Post Options Post Options   Quote mambo Quote  Post ReplyReply Direct Link To This Post Topic: Viltrox, Ttartisan, 7artisans and DJ Optical
    Posted: 04 January 2022 at 16:52
I have been wondering what the relationship between Viltrox, Ttartisan and 7artisans is? All their lens mention DJ Optical.

Are they three different companies who use the DJ Optical's factory to manufacture their lenses?

Are they one company? In which case, the optical formulae of their lenses are different at each focal length. Surely this is not an efficient use of R&D resources.

They are an intriguing lot. Does any one know the answers?

Regards

Charles
instagram | website | A6300 | A6400 | A7Riii | A7Riv | A99 |plus an assortment of glass |
 



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addy landzaat View Drop Down
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 04 January 2022 at 20:51
https://fotobargain.com/what-is-the-relationship-between-ttartisan-and-7atisans/

It is btw quite common to let somebody else make your lenses. Tamron, Sigma and Cosina make lenses for others - usually their own designs, but still.
Why not follow me on Instagram? @Addy_101
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mambo View Drop Down
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Joined: 13 September 2009
Country: Canada
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Post Options Post Options   Quote mambo Quote  Post ReplyReply Direct Link To This Post Posted: 04 January 2022 at 21:57
Thanks Addy. I had not seen that article.
instagram | website | A6300 | A6400 | A7Riii | A7Riv | A99 |plus an assortment of glass |
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