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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 22 Jan 2014 (Wednesday) 09:29
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Aye or Nay? Focus-by-wire lens...

 
ebann
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Jan 22, 2014 09:29 |  #1

I am having serious doubts whether I should keep my 85mm f/1.2L Mark 1. Are they still serviceable if the focus mechanism goes kaput?

I am wondering if I should sell it, while its still worth something... maybe 1K, and get myself the Rokkinon trio: 14mm, 35mm, and 85mm manual focus lenses.


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davidfarina
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Jan 22, 2014 09:44 |  #2

Really dont understand your statement:

Because you are affraid that your lens' AF may break you want to buy 3 rokinon lenses which are anyway MF?

Just wait for your lens to give up AF and then you have a 85L MF lens. Cheapest option?

However, i would not worry about lenses breaking, just use them because man, L lenses should last a very long time...


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nellyle
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Jan 22, 2014 10:13 |  #3

I may be wrong, but I'm pretty sure that if the AF breaks on a focus by wire lens you're stuck with no focus.


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Jerobean
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Jan 22, 2014 10:33 as a reply to  @ nellyle's post |  #4

isn't it yah or nay?


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gasrocks
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Jan 22, 2014 12:25 |  #5

Start working on your MF skills now. I shoot 100% of my pix using MF.


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pulsar123
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Jan 22, 2014 12:57 |  #6

AFAIK, focus by wire means no MF if AF systems gets broken inside the lens - it is a setup where multiple focusing groups are moved by motor(s).


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EverydayGetaway
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Jan 22, 2014 15:48 |  #7

gasrocks wrote in post #16627244 (external link)
Start working on your MF skills now. I shoot 100% of my pix using MF.

I'm steadily going this route as well, it's really not that difficult once you practice it for a bit ;)


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jt354
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Jan 22, 2014 16:55 |  #8

nellyle wrote in post #16626932 (external link)
I may be wrong, but I'm pretty sure that if the AF breaks on a focus by wire lens you're stuck with no focus.

On STM lenses such as the 40mm f/2.8 pancake this is definitely true - the lens will not manual focus unless there is an electrical connection to the camera, the camera is on, and the motor is functioning. Tbh I'm not sure what system the 85 f/1.2 works, that lens was never on my wish list. I imagine it'd be similar though.


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ebann
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Jan 22, 2014 17:48 |  #9

Yes, once the AF breaks, no MF.


Ellery Bann
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Aye or Nay? Focus-by-wire lens...
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