Become a Site Supporter and Never see Ads again!

Author Topic: iPhone video and focus  (Read 776 times)

0 Members and 1 Guest are viewing this topic.

Offline vwmule

  • Trade Count: (11)
  • Taperssection All-Star
  • ****
  • Posts: 1422
  • Gender: Male
iPhone video and focus
« on: March 29, 2017, 05:09:30 PM »
I regularly mount my iPhone at a club in D.C. and while the sound is good, I've noticed that the focus goes in an out even after I've locked onto an area on stage. So the resulting video pops in and out of focus. Not horribly, but enough. I suspect it's sound-pressure related as the steady moments are quite clear.

I'd appreciate any tips.


https://youtu.be/BJuD8I-3xBg
« Last Edit: March 29, 2017, 05:11:05 PM by vwmule »
Mics: DPA 4023 / AKG C426B / AKG ck61 ck62
Recorders: Zoom F8 / Tascam DR-70D / Sony M-10
Preamps: Tinybox / Littlebox

Offline willndmb

  • Trade Count: (17)
  • Needs to get out more...
  • *****
  • Posts: 6387
  • Gender: Male
Re: iPhone video and focus
« Reply #1 on: March 29, 2017, 06:47:56 PM »
Do you have a time where it does it, I skimmed it but didn't see anything

I suspect the lights are hitting it at the right angle and throwing it off
Mics - AKG ck61/ck63 (c480b & Naiant actives), SP-BMC-2
XLR Cables - Silver Path w/Darktrain stubbies
Interconnect Cables - Dogstar (XLR), Darktrain (RCA > 1/8) (1/8 > 1/8), and Kind Kables (1/8f > 1/4)
Preamps - Naiant Littlebox & Tinybox
Recorders - PCM-M10 & DR-60D

Offline Fatah Ruark (aka MIKE B)

  • Trade Count: (9)
  • Needs to get out more...
  • *****
  • Posts: 8639
  • Gender: Male
    • sloppy.art.ink
Re: iPhone video and focus
« Reply #2 on: March 29, 2017, 07:15:08 PM »
I'm not a concert video expert, but I've read before that you need to have the camera set to manual focus or this will happen.

I just checked my phone (Nexus 6P) and I don't see any option for manual focus. No idea on the iPhone if that's an option.

Maybe if the stock camera app doesn't have manual focus, some other camera app might offer it.
-24      -12              -6             0       OVER
||||||||||||||||||||||||||| []  
|||||||||||||||||||||||||||| []

||| MICS:  Beyer CK930 ~ Nevaton MCE400 ~ Countryman B3 |||
||| CABLES: Kind Kables |||
||| PREAMP: Naiant Tinybox | Naiant Littlebox | Naiant IPA | Church BB |||
||| DECK: Sony M10 |||
||| PLAYBACK: Outlaw Audio RR2150 > Epos ELS8 |||
||| PHOTO: Sony a6000 | Sony 16-50 | Sony 55-210 | Rokinon 14mm | Rokinon 8mm |||
|||Concerts History || LMA Recordings || Live YouTube Channel|||

Offline vwmule

  • Trade Count: (11)
  • Taperssection All-Star
  • ****
  • Posts: 1422
  • Gender: Male
Re: iPhone video and focus
« Reply #3 on: March 29, 2017, 07:59:39 PM »
> Do you have a time where it does it, I skimmed it but didn't see anything

See 30 second to 1 minute mark, for example.

Mics: DPA 4023 / AKG C426B / AKG ck61 ck62
Recorders: Zoom F8 / Tascam DR-70D / Sony M-10
Preamps: Tinybox / Littlebox

Offline willndmb

  • Trade Count: (17)
  • Needs to get out more...
  • *****
  • Posts: 6387
  • Gender: Male
Re: iPhone video and focus
« Reply #4 on: March 29, 2017, 08:57:07 PM »
> Do you have a time where it does it, I skimmed it but didn't see anything

See 30 second to 1 minute mark, for example.
im not seeing it, but I'm on a small screen right now too
Mics - AKG ck61/ck63 (c480b & Naiant actives), SP-BMC-2
XLR Cables - Silver Path w/Darktrain stubbies
Interconnect Cables - Dogstar (XLR), Darktrain (RCA > 1/8) (1/8 > 1/8), and Kind Kables (1/8f > 1/4)
Preamps - Naiant Littlebox & Tinybox
Recorders - PCM-M10 & DR-60D

Offline morst

  • Archivist: Camper Van Beethoven & Cracker
  • Trade Count: (1)
  • Needs to get out more...
  • *****
  • Posts: 2238
  • Get in touch if you wanna record Cracker or CVB!
    • Soundscape Preservation Society
Re: iPhone video and focus
« Reply #5 on: March 29, 2017, 09:36:26 PM »
I could not look at two songs in a row, it makes me feel woozy.

I suspect it's the image stabilization acting on the moving lights.

could also be related to auto focus on the "tripod" mounted camera.

I'm not a concert video expert, but I've read before that you need to have the camera set to manual focus or this will happen.

I just checked my phone (Nexus 6P) and I don't see any option for manual focus. No idea on the iPhone if that's an option.

Maybe if the stock camera app doesn't have manual focus, some other camera app might offer it.

iphone lacks manual focus on the camera app. Good idea to look for a different app...
Teams: Neumann, Bay Area Tapers, Multitrack, Pioneertown Tapers, Mac Geeks, Cassette Masters, Poster Collectors, Alumni of teams St Louis, Upper Midwest & Milwaukee / Southern Wisco

Offline vwmule

  • Trade Count: (11)
  • Taperssection All-Star
  • ****
  • Posts: 1422
  • Gender: Male
Re: iPhone video and focus
« Reply #6 on: March 29, 2017, 11:15:51 PM »
Thanks all for checking it out. I think I'll remove that video as it bug shit out of me, too. Will seek another app to shoot video. In general I think the video and audio quality is not bad on the iphone 6.
Mics: DPA 4023 / AKG C426B / AKG ck61 ck62
Recorders: Zoom F8 / Tascam DR-70D / Sony M-10
Preamps: Tinybox / Littlebox

Offline morst

  • Archivist: Camper Van Beethoven & Cracker
  • Trade Count: (1)
  • Needs to get out more...
  • *****
  • Posts: 2238
  • Get in touch if you wanna record Cracker or CVB!
    • Soundscape Preservation Society
Re: iPhone video and focus
« Reply #7 on: March 30, 2017, 12:34:35 AM »
I watched at 720 on a big monitor, like 25". Maybe it's ok smaller but .. yeah, I appreciate the effort!!!!
Teams: Neumann, Bay Area Tapers, Multitrack, Pioneertown Tapers, Mac Geeks, Cassette Masters, Poster Collectors, Alumni of teams St Louis, Upper Midwest & Milwaukee / Southern Wisco

Offline Gutbucket

  • record > listen > revise technique
  • Trade Count: (13)
  • Needs to get out more...
  • *****
  • Posts: 11058
  • Gender: Male
Re: iPhone video and focus
« Reply #8 on: March 30, 2017, 09:01:56 AM »
At first I was looking for lights-related stabilization issues.  Then I realized it seems to happen only when they are playing, but not during the between song stage banter, even in sections while the lights remain unchanged during those transitions.  I suspect image stabilization being confused by SPL related vibration.  I'm not an Iphone user, does it allow you to switch image stabilization off?
volition > vibrations > voltages > numeric values | numeric values > voltages > vibrations > virtual teleportation time-machine experience

"Narrow or widely spaced microphone configurations are preferred. It is well-known experience that pure coincidence microphone concepts are not able to produce a satisfying natural spatial impression, due to the lack of adequate interchannel temporal relations (time-of-arrival, phase, correlation)" -G√ľnther Theile
"The mix of the Double M/S signals with a large A/B configuration of omnis results in the spacious sound that is often desired. This option also provides decorrelated low-frequency signals." -Helmut Wittek

Offline vwmule

  • Trade Count: (11)
  • Taperssection All-Star
  • ****
  • Posts: 1422
  • Gender: Male
Re: iPhone video and focus
« Reply #9 on: March 30, 2017, 04:49:54 PM »
I downloaded FiLMiC Pro, $15 app, and it seems to be very advanced, including allowing image stabilization to be turned off, which I don't think the standard Apple camera app allows. Will give it a spin.

http://www.filmicpro.com/apps/apple/filmic-pro/
Mics: DPA 4023 / AKG C426B / AKG ck61 ck62
Recorders: Zoom F8 / Tascam DR-70D / Sony M-10
Preamps: Tinybox / Littlebox

 

RSS | Mobile
Page created in 0.158 seconds with 32 queries.
© 2002-2017 Taperssection.com
Powered by SMF
Website Design by Foxtrot Media, Inc., a Baltimore Website Company