4/3 lenses are all noisy on the AF 100 ?

[John Brawley]

I had a short test of the AF100 yesterday and tried all my 4/3 lenses on the camera and was VERY disappointed to discover that changing aperture creates an unacceptable noise.<br />
<br />
Unless anyone can tell me different, it seems that we're stuck with a noisy click every time you iris up or down ?<br />
<br />
I tried..<br />
<br />
Olympus<br />
7-14 F4<br />
14-35 F2<br />
35-100 F2<br />
150 F2<br />
50mm F2 Macro<br />
35mm F3.5 Macro<br />
<br />
Panasonic / Lumix<br />
25 F1.4<br />
14-50 F2.8-3.5<br />
<br />
Sigma 50 F1.4.<br />
<br />
<br />
<br />
Even the Panasonic lenses made the same annoying click. So for me, owning the 4/3 mount lenses that I already have doesn't seem to be much of a real advantage to using a m4/3 camera like this. Most annoying. <br />
<br />
Anyone else experience this ?<br />
<br />
jb

 

[Shooter]

How often do you change aperture while you are rolling?

Whatever... your experience just adds another reason why stills lenses for cine work are a compromise.

Can you get your lenses "de clicked"?

Were you using an on board mic? If so...easily fixed. DONT!

 

[John Brawley]

How often do you change aperture while you are rolling?

Whatever... your experience just adds another reason why stills lenses for cine work are a compromise.

Can you get your lenses "de clicked"?

Were you using an on board mic? If so...easily fixed. DONT!

I'm wanting to use them as insert cameras on a TV series that's shooting RED MX. That means double system sound so it's not the camera mic that's the issue. The lenses have an electronic iris so it's not the *declick* that happens with older lenses, but simply the noise they make when stepping between it's presets.

And I change exposure while rolling all the time...Especially daylight exteriors.

The m4/3 lenses don't do this, and given 4/3 and m/43 are basically the same, I would have thought that this would have been an issue....

jb

 

[joesiv]

The m4/3 lenses don't do this, and given 4/3 and m/43 are basically the same, I would have thought that this would have been an issue....

That's a bad assumption. Just becuase the sensor size is the same doesn't mean they're "Basically the same". There are key differences, and that's causing the problems you're seeing (or hearing). Regular fourthirds was designed for still pictures with no intention of being used for motion picture recording (just like canon/nikon/pentax/Sony/etc..). Actually regular fourthirds has been pretty much the last dslr format to actually get video support!

However, microfourthirds and the lens' were designed with full intention of future video support. Which is why they focus much faster as well (since they are designed for contrast detect AF rather than phase detect). Currently, probably only the 14-140 is "really" taylored for video, with more steps in aperture movement, silent AF, etc... But more and more mFT lens' are being released that are move video friendly with silent AF and such.

The only thing "basically the same" about microfourthirds and fourthirds is the frame size, and some of the communication.

 

[Homunculus]

wow thought it was another video noise thread but it's AUDIBLE noise, that's a relief

 

[John Brawley]

That's a bad assumption. Just because the sensor size is the same doesn't mean they're "Basically the same".

I'm well aware of the differences between cine lenses and still lenses shooting cine style.

I'm well aware of the different AF systems. Im manually focussing so that doesn't apply, not that I asked about AF.

The issue is that these lenses all make a lot of noise on the AF100 that they don't make on the GH2 using the same adaptor when I change the iris in shot....

jb

 

[Mike@AF]

The issue is that these lenses all make a lot of noise on the AF100 that they don't make on the GH2 using the same adaptor when I change the iris in shot....

Interesting. I don't notice the noise with my 14-140. That's the only m4/3 lens I have. Does this noise also happen when you're not recording?

 

[astigmatic]

Good to know. Besides the noise, is stopping down smooth or are the increments obvious, visually speaking?

 

[pomoville]

The 20mm pancake is pretty noisy when it stops down, as well. On my Oly 14-54mm, changing the focus is rather noisy, as well -- a bit annoying, but oh well.

 

[John Brawley]

Good to know. Besides the noise, is stopping down smooth or are the increments obvious, visually speaking?

The increments look pretty seamless on screen. Haven't seen anything through post yet.

jb

 

[John Brawley]

Interesting. I don't notice the noise with my 14-140. That's the only m4/3 lens I have. Does this noise also happen when you're not recording?

Yes it did for me. I didn't have a m4/3 lens to compare with.

jb

 

[John Brawley]

The 20mm pancake is pretty noisy when it stops down, as well. On my Oly 14-54mm, changing the focus is rather noisy, as well -- a bit annoying, but oh well.

Is that a m4/3 lens ? The olympus or the panasonic ?

jb