AG-AF100 lens iris noise…
John Brawley tested the Panasonic GH2 and the AG-AF100 cameras. He complains one particular issue the AG-AF100 has:
“Listen to the noise picked up by the camera mike as I change the iris on the camera. It actually sounded worse to me than what was recorded in this clip This is a test clip shot on an AF 102 (AF100). that was done using the Olympus 7-14 and a Panasonic m4/3 adaptor. I tested it with a great many 4/3 lenses from both Panasonic and Olympus. They all make the same noise. The interesting thing is that the same lenses and adaptors on the GH2 didn’t seem to make the same noise.”
More at johnbrawley.wordpress.com
AG-AF100 preorder links at Adorama or BHphoto.
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Recent comments
Comment from misu: I agree.
I also find his comments to b...
Comment from John Brawley: Hi Chris.
This is a totally different...- Comment from John Brawley: ****Correction
The 14-140 isn’t the...
- Comment from John Brawley: Thanks for your kind words again Andrew....
Andrew Reid
2 years ago |This guy really needs to do his basic research before moaning.
The lenses he’s using are not optimised for video.
Only the 14-140mm and some of the new Lumix lenses have silent operation, change of iris.
Changing iris whilst recording is an awful effect anyway and not required. Not only is the sound noticeable, the picture would step up and down in brightness and the depth of field would change. Get a clue John!
admin
2 years ago |Hi Andrew! Interesting that John said the iris noise is on the AF100 and not on the GH2…
John Brawley
2 years ago |Thanks for your kind words again Andrew.
I know I’m shooting with lenses designed for stills.
The 14-140 isn’t the only lens that is silent. I can’t hear a peep out of the 14mm F2.5 or the 17mm 1.7.
I change aperture all the time when I’m shooting mate. Anyone who says that this isn’t something that is sometimes required doesn’t have a clue. Lighting conditions change all the time.
Shooting today on a car interior I was constantly changing the iris mid take to correct for the changing lighting conditions.
Another shot on a RED today took a character from an interior sunlit corridor into a dark room. Aperture went from 5.6 to 2.8 as she crossed the threshold of the room.
I’ve done 5 stop Iris pulls in-shot to take a character form interior to exterior in one shot.
Anytime I’m shooting outside with clouds I sometimes find a change stop mid take.
I did a steadicam shot using a 7D and used auto-ISO to do the exposure change on an interior to exterior move.
Mate I do what I have to do to get the shot without having to go again.
Please don’t make pronouncements about what is and isn’t an awful affect because I do it all the time and I suspect I’m not the only one. Just because it’s not what you would do doesn’t make you the iris changing police.
And you’re attacking me and the way that I choose to use a camera, but you’re addressing a different issue to the one I brought up…namely why Panasonic can give me near silent aperture changes on a GH2 but not so silent ones on an AF100.
misu
2 years ago |I agree.
I also find his comments to be rude.
Mark Sasahara
2 years ago |Your headline is wrong. The lens is making the noise, not the camera. The AF100/101 does not have an iris.
Well, that’s what you get using a stills lens to shoot video. It’s not optimized for motion, or sound.
admin
2 years ago |Thanks!
Corrected.
John Brawley
2 years ago |****Correction
The 14-140 isn’t the only lens that is silent. I can’t hear a peep out of the 14mm F2.5 or the 17mm 1.7.
Should be 20mm 1.7.
jeff
2 years ago |correct me if im wrong but in videography you are shooting in a shot by shot basis so you are not going to change your fstop anyway….
why does this matter?
Jonathan
2 years ago |you’re mostly right, though when shooting documentary footage sometime the aperture has to be changed to cope with changing light situation. A dedicated video/ cine lens with continuously variable would be more suitable in such scenarios.
Chris
2 years ago |Apparently there are ‘declicking services’ available for still lenses if people want the click removed. Not sure where in Australia though.
misu
2 years ago |the auto iris is useless even on the “optimized” 14-140 because the change in image is not smooth. the iris also “hunts” the exposure, going back and forth.
“moaning” about some basic stuff you would expect from a video camera is only natural.
John Brawley
2 years ago |Hi Chris.
This is a totally different issue. De-Cicking only applies to manual aperture stills lenses. I’m taking about lenses with electronically activated apertures.
jb