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Anonymous
"Fly-by-wire" focusing. Do you know what it is? What are your thoughts on it?


Discuss.
>> Anonymous
>>158690Focus-by-wire, if done right, is better than the usual system with a mechanical AF/MF switch due to the lack of said switch. Its only inherent disadvantage is an almost complete lack of tactile feedback when you reach the limit of the focusing range (the ring continues to rotate, you can only feel that the motor stopped clicking).

Hmm, isn't that what FTM does in every other lens? And also, the focus ring on my L lenses keep on going even if I reach infinity or the other way.
>> Anonymous
>>158692
FTM is Canon marketingspeak for clutchless ultrasonic motors, and Olympus didn't have them until very recently.

>the focus ring on my L lenses keep on going even if I reach infinity or the other way
It should become harder to rotate, though.
>> Anonymous
Dunno, maybe it's over time and use but I don't feel any catch when I reach either ends.

I can keep on rolling until I go the other way.
>> Anonymous
>>158697
Hmm, I was under the impression that all L lenses had focus rings mechanically linked to lens elements. But this looks like you have the same focus-by-wire system as in Olympus lenses, just with a faster and more responsive motor.
>> Anonymous
Pretty damn sure there's none of that wire bullshit.

It's all mechanical.
>> Anonymous
>>158703
Hmm, any mechanical linkage should feel different when the lens reaches infinity and stops moving. Can you manually focus while the camera is powered off?
>> ac !!VPzQAxYPAMA
>>158701
>Hmm, I was under the impression that all L lenses had focus rings mechanically linked to lens elements
Nope. Kinda depends on the size of the lens, as I understand it. Difficult to manually move all that glass in the big lenses.
>> Anonymous
>>158780

Truth.
>> Anonymous
>>158697
The L lenses I've tried definitely have a change in tension when you hit either end of the focal range. The wheel spins, but it feels like it's not actually pushing anything. Which I guess is the case.
>> Anonymous
Does this mean you must have power going to the lens in order to focus it manually?
>> Anonymous
>>158902
Without mechanical linkage, yes.

It's a good test to determine if the lens is focus-by-wire or not - if when the camera is powered off the focus ring rotates, but the lens doesn't focus, then it's focus-by-wire; if the ring rotates and the lens focuses, it's a mechanical focus ring; if the ring is locked in place, I dunno lol.
>> Anonymous
Nothing but a way to push cheaper-to-manufacture lenses on the photographic community by having the marketing fools trumpet it as a "feature"
/thread
>> $19.99 !OSYhGye6hY
>>158701
Yeah, L lenses and all lenses with ftm keep spinning, but i just checked now, you can still manual focus when the camera is off.