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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 15 May 2012 (Tuesday) 19:48
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why is there no autofocus in samyang lenses?

 
c2thew
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May 15, 2012 19:48 |  #1

http://www.dxomark.com …n-measurements-and-review (external link)

the samyang seems to outperform the nikon 35mm 1.4G lens and also seems to be sharper then canon's 35mm 1.4L however I'm wondering why they didn't include autofocus on their lenses like tamron or sigma does. Yes their lens isn't quite a true 1.4 as it seems to be more of a 1.6 in regards to aperature and the bokeh isn't quite as smooth as canon's 35mmL but to my eyes it outperforms the nikon 35mm 1.4G.

it seems like samyang is poised to really shine, but without autofocus; using the lens for fast paced events really is out of the question. Do you think it's a logistical issue or more of a production cost issue for designing and reverse engineering the autofocus system for both nikon and canon?


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May 15, 2012 20:49 |  #2

$$$

Looks like they put the money into the quality of the optics instead. Autofocus doesn't come for free, and apparently they decided there was a market for high quality glass w/o autofocus for a lower price.


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maplewoods
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May 15, 2012 20:56 |  #3

I've thought about this before, and here's my humble opinion:

I think there's a world difference between designing MF lenses and AF ones.

Designing a lens is complicated balancing among many factors. To add AF and to make their lenses as compact as possible Canon and Nikon have to sacrifice some degree of IQ performance. Even if Samyang did managed to add AF within there lenses, they would either be much bigger or lesser in terms of IQ, and of course much more expensive.

Think it this way: Sigma is an international company that has 50 years of experience. Do you think its tech is no better than the tiny Samyang (no offense, last time I checked it has 100 some employees)? But it still can't catch up with C&N because they have to make their lenses AF and cheaper.

In a nutshell, it's a matter of both technical capability and money.

Anyway, Samyang makes cheap lenses that performs well, as long as you don't mind MF. It's a blessing for us.




  
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May 15, 2012 21:21 |  #4

Reverse engineering didn't work out ;)


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Brian_R
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May 15, 2012 21:23 |  #5

you get great IQ for an excellent price. Auto focus will jack the price up more




  
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c2thew
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May 16, 2012 02:28 as a reply to  @ Brian_R's post |  #6

samyang needs to get it together! :cool:


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May 16, 2012 07:15 |  #7

I could live with manual focus, if they at least picked the Zeiss approach to it (focus confirm + electronic aperture). Both manual focus AND manual aperture makes their otherwise great lenses a no-go for me. Stop down metering is very unpleasant and slows me down too much to properly use the lens at f/2.8 - f/5.6. Smaller apertures and I'm probably shooting from a tripod, bigger apertures and I can focus it stopped down eitherway.

I'm sure their sales numbers of canon mount lenses would easily triple if they gave it a "real" electromagnetic aperture and focus confirm.


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May 16, 2012 07:36 |  #8

i am on the edge of buying a samyang/rokinon 35mm f/1.4, but MF and no focus confirmation really bothers me. the nikon version of this lens are chipped and have focus confirmation, should i buy the nikon version and get a nikon to eos adopter?


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May 16, 2012 07:43 |  #9

I own two samyang lenses, the 85mm and the 8mm. Manual focus is easy and very rewarding. I preffer good quality and low prices all the time. :D


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May 16, 2012 07:59 |  #10

Very good question I don't know about rokinon anymore why spend half of the money to get half the value if I'm going for a all manual lens I think I'm just going spend the big bucks for Carl Zeiss or just go all out for the L glass because later down the road your just going be itching for nothing but the best so why not save up and start early.....


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May 16, 2012 08:28 |  #11

justdamnit wrote in post #14439518 (external link)
i am on the edge of buying a samyang/rokinon 35mm f/1.4, but MF and no focus confirmation really bothers me. the nikon version of this lens are chipped and have focus confirmation, should i buy the nikon version and get a nikon to eos adopter?

This is a good idea, because it will actually get you focus confirm on a Canon body of with lens. You'll still have manual aperture though.


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May 16, 2012 13:34 |  #12

I believe both mentioned factors are at work here:

- From a lens designer perspective, adding AF can result in some IQ sacrifices. (It can happen that the best design you found is not suitable for AF because too much mass of glass needs to be moved around, so you go for your second best, or third best, or ...)
- Samyang does seem to be aiming at the niche market of both IQ and budget concious buyers.

Here is my question - will Samyang add IS (image stabilization) to their manual focus lenses? And the answer is probably "no", pretty much for the two above reasons.


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May 16, 2012 15:41 |  #13

TweakMDS wrote in post #14439467 (external link)
I could live with manual focus, if they at least picked the Zeiss approach to it (focus confirm + electronic aperture). Both manual focus AND manual aperture makes their otherwise great lenses a no-go for me. Stop down metering is very unpleasant and slows me down too much to properly use the lens at f/2.8 - f/5.6. Smaller apertures and I'm probably shooting from a tripod, bigger apertures and I can focus it stopped down eitherway.

I'm sure their sales numbers of canon mount lenses would easily triple if they gave it a "real" electromagnetic aperture and focus confirm.


This is what I would like to see them do. Add focus confirm and electronic aperture. And I completely agree: it’s very hard or frustrating to use their lenses at wider apertures.


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May 16, 2012 15:48 |  #14

I thought EMF AF confirm chips were like $5 on eBay now?


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May 16, 2012 20:28 |  #15

TweakMDS wrote in post #14439684 (external link)
This is a good idea, because it will actually get you focus confirm on a Canon body of with lens. You'll still have manual aperture though.

Uh, no. The Canon adapter will just cover the Nikon pins/contacts, and it's not like the Nikon pins/contacts would a) fit or b) give the proper electronic communication signals to a Canon body.

Mike Deep wrote in post #14441797 (external link)
I thought EMF AF confirm chips were like $5 on eBay now?

+1. Just get an EMF chip (external link) on eBay (big_is has 'em for $10) and glue it on. AF confirm and aperture setting, as well as programmable for the max. aperture and focal length in the EXIF.

To me the obvious reasons that AF isn't included in the Samyang/Rokinon lenses are that it just makes engineering easier. No separate reverse engineering of the electronic communication systems for every. single. mount. system. you want to support--you just have to get mechanical linkage right. And you don't have to include the mechanics of a focus motor, either. So, smaller, simpler, lenses that will always be compatible. Adding more features just means more things that can wrong. When you multiply that across multiple mounts, and you're basically winning sales on low cost and high optical quality, why worry? Why compete directly with Sigma/Tamron/Tokina if you don't have to? The Samyang guys have found their niche and they're filling it very nicely.


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why is there no autofocus in samyang lenses?
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