February 22, 2018, 07:38:17 AM

Author Topic: Yongnuo going after L lenses now?!  (Read 3269 times)

ahsanford

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Yongnuo going after L lenses now?!
« on: December 21, 2017, 02:40:58 PM »
A 14 f/2.8L II knockoff, or is this just a re-badged RokiBowYang?

https://petapixel.com/2017/12/21/yongnuo-14mm-f-2-8-ultra-wide-angle-autofocus-lens/

(pic from article)

- A

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Yongnuo going after L lenses now?!
« on: December 21, 2017, 02:40:58 PM »

andrei1989

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Re: Yongnuo going after L lenses now?!
« Reply #1 on: December 21, 2017, 03:45:34 PM »
interesting. it seems to be a different optical formula than the saymang or the canon 14mm lenses but the MTF charts look better on the samyang than on this one..
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ahsanford

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Re: Yongnuo going after L lenses now?!
« Reply #2 on: December 22, 2017, 04:54:22 PM »

More details here -- it has been announced:

https://photorumors.com/2017/12/22/yongnuo-yn-14mm-f-2-8-ultra-wide-lens-now-officially-announced/

Not the same optical setup, blade count or weight of the 14 f/2.8L I or II.  This is a different animal.

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Don Haines

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Re: Yongnuo going after L lenses now?!
« Reply #3 on: December 22, 2017, 05:51:37 PM »

More details here -- it has been announced:

https://photorumors.com/2017/12/22/yongnuo-yn-14mm-f-2-8-ultra-wide-lens-now-officially-announced/

Not the same optical setup, blade count or weight of the 14 f/2.8L I or II.  This is a different animal.

- A

The MTF charts are not impressive......  but you can bet that the price will be......
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midluk

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Re: Yongnuo going after L lenses now?!
« Reply #4 on: December 22, 2017, 07:20:13 PM »

More details here -- it has been announced:

https://photorumors.com/2017/12/22/yongnuo-yn-14mm-f-2-8-ultra-wide-lens-now-officially-announced/

Not the same optical setup, blade count or weight of the 14 f/2.8L I or II.  This is a different animal.

- A
They have an "Abnormal Dispersion Lens". I guess Canon would call that BR.
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applecider

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Re: Yongnuo going after L lenses now?!
« Reply #5 on: December 22, 2017, 08:16:07 PM »
Don I’m probably reading the MTF  chart wrong but the YN looks like it is better than the canon.  Of course what matters here is the coma, at least for Astro shooters.
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sulla

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Re: Yongnuo going after L lenses now?!
« Reply #6 on: December 23, 2017, 06:35:10 AM »
Wow, the optical similarity to Canon glass alone is... brazen

MTF is better in certain aspects and worse in others. If I read those lines correctly, astigmatism should be lower than in the Canon original
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Re: Yongnuo going after L lenses now?!
« Reply #6 on: December 23, 2017, 06:35:10 AM »

jolyonralph

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Re: Yongnuo going after L lenses now?!
« Reply #7 on: December 23, 2017, 07:22:18 AM »
Wow, the optical similarity to Canon glass alone is... brazen

Only superficially, the internals are nothing like either the I or II canon lenses.
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Mt Spokane Photography

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Re: Yongnuo going after L lenses now?!
« Reply #8 on: December 23, 2017, 12:31:58 PM »
The Canon 14mm f/2.8 is a old lens, and patents on the optical formula have probably expired, so anyone can use the formula.  Manufacturing to the tight tolerances is another matter.  A theoretical MTF value versus what is actually manufactured can be two totally different things.

I've had the Samyang lens, it was the worst lens I've ever owned, and that includes some pretty bad ones.  Maybe it had theoretical high MTF, but the end product was junk quality.

applecider

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Re: Yongnuo going after L lenses now?!
« Reply #9 on: December 23, 2017, 05:51:04 PM »
Mt. Spokane just noticed your avatar or whatever it is called is a 5-1500mm f1.0L IS Lens pretty special I am jealous, and want one (lens not the avatar). :P
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Mt Spokane Photography

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Re: Yongnuo going after L lenses now?!
« Reply #10 on: December 24, 2017, 02:01:55 AM »
Mt. Spokane just noticed your avatar or whatever it is called is a 5-1500mm f1.0L IS Lens pretty special I am jealous, and want one (lens not the avatar). :P

There were only two made, I was lucky enough to find one at a estate sale for $25.  The other one has never surfaced. ;)

privatebydesign

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Re: Yongnuo going after L lenses now?!
« Reply #11 on: December 24, 2017, 08:10:31 AM »
Mt. Spokane just noticed your avatar or whatever it is called is a 5-1500mm f1.0L IS Lens pretty special I am jealous, and want one (lens not the avatar). :P

There were only two made, I was lucky enough to find one at a estate sale for $25.  The other one has never surfaced. ;)

Ah the Honjo Masamune of avatars.
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Re: Yongnuo going after L lenses now?!
« Reply #11 on: December 24, 2017, 08:10:31 AM »