KAP & UAV Exposure Control Intervalometer Script - page 24 - Completed and Working Scripts - CHDK Forum
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KAP & UAV Exposure Control Intervalometer Script

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Offline waterwingz

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Re: KAP & UAV Exposure Control Intervalometer Script
« Reply #230 on: 18 / July / 2014, 21:51:11 »
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Quote from: timvand on 18 / July / 2014, 21:36:56
Settings;
TV mode
Shutter:  1/3200
Focus:  camera manual/infinity
Script:  interval.bas
Disable Overrides:  YES
I've assumed you are somewhere in the western USA by the previous pictures but these pix are all really dark - and you'd have to be about 500 miles east of Boston to be that dark right now.

So I've learned something about Canon's Tv priority mode.  It only cranked the ISO up to 200 when you went to 1/3200.   Hence the massively underexposed images.

Unless of course you did not have ISO in auto mode - and have it locked at ISO200 in the Canon settings?

Try again ?  (Incidentally,  the focus looks really good if I squint at the darkness)

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Offline timvand

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Re: KAP & UAV Exposure Control Intervalometer Script
« Reply #231 on: 18 / July / 2014, 21:56:06 »

Yes, Cali

Unless of course you did not have ISO in auto mode - and have it locked at ISO200 in the Canon settings?
Will check and re-shoot now.

Try again ?  (Incidentally,  the focus looks really good if I squint at the darkness)
Maybe that's the trick?  LOL

Back shortly.
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Offline timvand

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Re: KAP & UAV Exposure Control Intervalometer Script
« Reply #232 on: 18 / July / 2014, 22:16:22 »
Images are uploading, set ISO to auto, lighting is better, and not great.

Check it out and let me know.

Link to follow.
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Offline waterwingz

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Re: KAP & UAV Exposure Control Intervalometer Script
« Reply #233 on: 18 / July / 2014, 22:42:06 »
Quote from: timvand on 18 / July / 2014, 22:16:22
Images are uploading, set ISO to auto, lighting is better, and not great.
Those don't look too bad for ISO3200.  Could try dialing the Tv value back to 1/1000 and trying again tomorrow in normal day light.

I did note that the Maker Note data say Subj Dist 6553 for every shot still - even though it is clearly auto focusing at different distances in these shots.
 
« Last Edit: 18 / July / 2014, 23:08:54 by waterwingz »
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Offline timvand

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Re: KAP & UAV Exposure Control Intervalometer Script
« Reply #234 on: 19 / July / 2014, 00:18:22 »
Quote from: waterwingz on 18 / July / 2014, 22:42:06
Those don't look too bad for ISO3200.  Could try dialing the Tv value back to 1/1000 and trying again tomorrow in normal day light.
Will give this a shot in the AM and check the results.

Quote
I did note that the Maker Note data say Subj Dist 6553 for every shot still - even though it is clearly auto focusing at different distances in these shots.
The flight altitude is set at 100 meters so, not sure what the Subj Dist value of 6553 is though.
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Offline waterwingz

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Re: KAP & UAV Exposure Control Intervalometer Script
« Reply #235 on: 19 / July / 2014, 10:09:19 »
Quote from: timvand on 19 / July / 2014, 00:18:22
The flight altitude is set at 100 meters so, not sure what the Subj Dist value of 6553 is though.
6553 means 65535 millimeters - (also -1 in binary)  - and is supposed to represent infinity to the camera.

65 meters with the amazing DOF of these little boxes,  that's close enough.

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Offline mirax7

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Re: KAP & UAV Exposure Control Intervalometer Script
« Reply #236 on: 19 / July / 2014, 14:05:07 »
Hi timvand,

On the link below there are the parameters used by me on a Canon SX230 (starting with page 13):

http://www.myap.ro/wp-content/uploads/2014/07/Gluonpilot-photomapping-setup-v1.31.pdf


What flying platform you use ? The cruise speed is a very important parameter to obtain good pictures.
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Offline timvand

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Re: KAP & UAV Exposure Control Intervalometer Script
« Reply #237 on: 19 / July / 2014, 14:25:51 »
Quote from: mirax7 on 19 / July / 2014, 14:05:07
Hi timvand,

On the link below there are the parameters used by me on a Canon SX230 (starting with page 13):

http://www.myap.ro/wp-content/uploads/2014/07/Gluonpilot-photomapping-setup-v1.31.pdf

Thanks I will re-review these settings after I do a quick test of the settings from WW suggested yesterday.  One way or the other, I WILL, with the assistance from others, get this to work.

Quote
What flying platform you use ? The cruise speed is a very important parameter to obtain good pictures.

I am using a DJI s800 frame with Pixhawk FC.  Mission Planner does all the calc's and waypoints for the flight.  The speed I have set now is 4 m/s.
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Offline waterwingz

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Re: KAP & UAV Exposure Control Intervalometer Script
« Reply #238 on: 19 / July / 2014, 14:32:28 »
Quote from: timvand on 19 / July / 2014, 14:25:51
Thanks I will re-review these settings after I do a quick test of the settings from WW suggested yesterday.  One way or the other, I WILL, with the assistance from others, get this to work.
I've been communicating with zeno  (dave mitchell) who has an s100 - one of the cameras that also won't focus at infinity - and he is using the kap_uav.lua script successfully.  He even sent me a link to some great shots he took in Italy.   One difference is that he sets the Focus @ Infinity Mode to None and lets the camera's AF take over - which would explain why he is not having problems.   That's basically what I've been working you towards with my instructions from last night - use Tv mode with a 1/1000 shutter speed, set the Canon MF to infinity, and then let a simple intervalometer script run.
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Offline timvand

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Re: KAP & UAV Exposure Control Intervalometer Script
« Reply #239 on: 19 / July / 2014, 14:40:50 »
Quote from: waterwingz on 19 / July / 2014, 14:32:28
Quote from: timvand on 19 / July / 2014, 14:25:51
Thanks I will re-review these settings after I do a quick test of the settings from WW suggested yesterday.  One way or the other, I WILL, with the assistance from others, get this to work.
I've been communicating with zeno  (dave mitchell) who has an s100 - one of the cameras that also won't focus at infinity - and he is using the kap_uav.lua script successfully.  He even sent me a link to some great shots he took in Italy.   One difference is that he sets the Focus @ Infinity Mode to None and lets the camera's AF take over - which would explain why he is not having problems.   That's basically what I've been working you towards with my instructions from last night - use Tv mode with a 1/1000 shutter speed, set the Canon MF to infinity, and then let a simple intervalometer script run.

Awesomeness!  On my way out now to run it.  Will have pics posted in 20 mins or less.
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