Harry's GPS Suite Forum

Hello,
I just purchased the petrolhead edition of the laptimer, I think it is great and has massive potential. At some point I will be using it with an external gps and bluetooth OBDII module but for now I am trying to do everything using the Iphone.

I currently have an Iphone6+ and while using the rear camera mounted with RAM mounts and the iphone6+ specific cradle at night on the windshield, I experienced a lot of vibration on the video. I have also (through work) ordered an Iphone6s (small one) to replace my current phone but after reading some reviews I figured out that it does not have optical image stabilization. It only has digital image stabilization.

My question is : Should I cancel my order and go with an Iphone6s+ and get the optical image stabilization feature, will it make a big difference? I don't think I will be recording video over 1920x1080. If OIS is not worth it I would rather have the smaller form factor phone.

Vehicle is 2013 911C2S, usual tracks are Willow Springs big track, streets of willow, Buttonwillow, Autoclub speedway fontana.

To my knowledge the jello is the same for all iPhones later than the 4S. I have no solution yet but believe it will be necessary to combine a stable mount with some damping.

Harry

Harry wrote:To my knowledge the jello is the same for all iPhones later than the 4S. I have no solution yet but believe it will be necessary to combine a stable mount with some damping.

Harry

As long as you aren't getting jello with an action cam firmly mounted to the car, the problem isn't the mount as it is with drones. It's the OS. Someone needs to convince Apple that when you ask the OS to turn image stabilization and autofocus off, you really want it off until you turn it back on.

gplracerx wrote:

Harry wrote:To my knowledge the jello is the same for all iPhones later than the 4S. I have no solution yet but believe it will be necessary to combine a stable mount with some damping.

Harry

As long as you aren't getting jello with an action cam firmly mounted to the car, the problem isn't the mount as it is with drones. It's the OS. Someone needs to convince Apple that when you ask the OS to turn image stabilization and autofocus off, you really want it off until you turn it back on.

This is not the whole story. When I mount an iPhone6S into my LR Defender an turn the engine on (which generates quite some vibrations), I get heavy jello while standing still. No autofocus activities at this time. Stabilization - I don't know. I plan to file an enhancement request with Apple and will ask some mount manufacturers for help too. Not sure anyone will listen, but at least I will try.

- Harry

Hmm I wish someone posted 1080p videos taken at the track with Harry's overlay on both Iphone6 and 6s+ for comparison.

Harry, isn't there any update on this yet? I bought the app and recommended ram mount and only when I was at the track found out about these "jello effects"... I wasn't planning spending more $ for an action cam ;(

Harry wrote:

gplracerx wrote:

Harry wrote:To my knowledge the jello is the same for all iPhones later than the 4S. I have no solution yet but believe it will be necessary to combine a stable mount with some damping.

Harry

As long as you aren't getting jello with an action cam firmly mounted to the car, the problem isn't the mount as it is with drones. It's the OS. Someone needs to convince Apple that when you ask the OS to turn image stabilization and autofocus off, you really want it off until you turn it back on.

This is not the whole story. When I mount an iPhone6S into my LR Defender an turn the engine on (which generates quite some vibrations), I get heavy jello while standing still. No autofocus activities at this time. Stabilization - I don't know. I plan to file an enhancement request with Apple and will ask some mount manufacturers for help too. Not sure anyone will listen, but at least I will try.

- Harry

No, this is a problem with the smartphone's cam capabilities. Nothing that can be changed on the app side.

- Harry

Harry, what about android phones, do they have the same problem?

Harry wrote:

gplracerx wrote:

Harry wrote:To my knowledge the jello is the same for all iPhones later than the 4S. I have no solution yet but believe it will be necessary to combine a stable mount with some damping.

Harry

As long as you aren't getting jello with an action cam firmly mounted to the car, the problem isn't the mount as it is with drones. It's the OS. Someone needs to convince Apple that when you ask the OS to turn image stabilization and autofocus off, you really want it off until you turn it back on.

This is not the whole story. When I mount an iPhone6S into my LR Defender an turn the engine on (which generates quite some vibrations), I get heavy jello while standing still. No autofocus activities at this time. Stabilization - I don't know. I plan to file an enhancement request with Apple and will ask some mount manufacturers for help too. Not sure anyone will listen, but at least I will try.

- Harry

You might solve that with a soft mount like they use for drone cameras that have severe vibration induced jello. Unfortunately, that may well affect the accuracy of the accelerometer measurements. Is a 4s better in the same conditions? Have you tried using a vibration measurement app to characterize the vibration when standing still. It would be interesting to see if the primary frequency correlated with engine RPM and whether the principle vibration was much stronger for one axis compared to the other two.

metro2084 wrote:Harry, what about android phones, do they have the same problem?

It is the same for many recent Android phones.

Harry