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HeliHobby . Ron’s HeliProz South . Century Helicopter

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Aerial Photography and Video > Aerial 360 Panos with a Point and Shoot?
 
 
AZ ChopperCam
Veteran
Location: Arizona

Quote 
Most don't care about the sky? It's blue and white. Need I say more?

lol. ok. sure.


Quote 
Just pondering what the benefits of a 20meg file might be.

Absolutely none unless maybe if it was shot with a full frame DSLR at max resolution uncompressed and you want to retain the pixel density and quality in the equirectangular image so as to be able to zoom into very narrow focal lengths in the QTVR file.

for 99.9% of every other pano, a 2-5mb file does beautifully.
07-17-2008 06:01 AM
HOMEPAGE  
 
 
tabbytabb
Elite Veteran
Location: seattle

Quote 
I suppose the final product depends on what level you want to take it to.

Aint that the truth!

John 20 megs is really too big and if you dont feel like filling the hole in the top you should just limit the field of view so you cant look up all the way.




Tabb
07-17-2008 08:14 AM
HOMEPAGE  
 
 
daytonabeach
Veteran
Location: Oslo, Norway

Quote 
The mount rotates in 4 seconds for us shooting 3.5 frames per second.. We have shot over 21,000 pics of the flood in 3 states and are stitching daily.

John!

Whats the min shutter speed you use with this method without getting any movement blur?

Never argue with an idiot, he'll drag you down to his level and beat you with experience...
07-17-2008 08:59 AM
HOMEPAGE  
 
 
AirFoilAviation
Veteran
Location: Quincy, IL.

I'm running the pan through a BEC so it does range from 4 to 4.5 seconds per rotation. I found the shutter speed that works best for the lens and camera is 1/1600th. 200 ISO. We have shot at 1/1250 also with no problem on no wind days. That pano was shot in 15mph wind.

On the other I wasn't just saying that because it was DJ. We all know he is going to have something to say. Shoot off a boat in a disaster zone in 15mph winds then tell me what you have. They use the pano here to zoom in and look at the breaks or for problems. The QTVR is a plus I just didn't bother to resize.

If you look what looks like dirt or dust is wet corn all over the town. Keep in mind these pics once shot are stitched on the way back for use ASAP. We will be in the middle of that town and one other today shooting.

A month from now people will be able to see the flood from about any angle. This is history here a 500 year flood. From Iowa to MO. to IL. we got every levee shot you could want.

Actually the sky is easy to put in but it's like a train wreck. They want to see the train but I understand where you are coming from Tabb.

Back to the point and shoot. I have a A640 and a A650. You will find the A650 with the Cannon wide angle and adapter are about 3 oz's lighter than a XSI and Sigma 10. BTW what you shot looks great this would be less work I'm guessing.

John

Team AirFoil
07-17-2008 12:42 PM
 
 
daytonabeach
Veteran
Location: Oslo, Norway

Wow! What aperture on 1/1600 may i ask, and what lens?

Never argue with an idiot, he'll drag you down to his level and beat you with experience...
07-17-2008 10:02 PM
HOMEPAGE  
 
 
AirFoilAviation
Veteran
Location: Quincy, IL.

It ends up shooting at 4.5 to about 5.5. Sigma 10mm full frame lens.
Manual focus/ 1/1600 speed and shoot. The lens loves it.

Just looked at what we shot today and it ranged from 4.0 to 5.5.

John

Team AirFoil
07-17-2008 11:15 PM
 
 
rerazor
Elite Veteran
Location: Mich.

I take it you are shooting in manual mode also? With my 8mm Sigma, Xti I always shoot at f8.0 and adjust the shutter (meter read in AV mode) depending on the light. As long as you can get 1/500 or higher you should be okay.

20mb file is completely un-necessary. I would either fix the sky or limit the tilt. I mean if you took the time to put that "cool" phrase up top you have enough time to limit or fix the sky.
07-18-2008 12:59 AM
 
 
dreslism
Veteran
Location: Rochester Hills, MI

John,

I know your busy with the storm coverage and all, but did you ever get the Pano mount out, or get some Picts of it???

--Scott
GreatLakesAP.com
07-18-2008 01:26 AM
 
 
AZ ChopperCam
Veteran
Location: Arizona

Quote 
if you took the time to put that "cool" phrase up top you have enough time to limit or fix the sky.

yup. Would take longer to type up a "neat" phrase on the top cube face than it would to patch in some sky on the equirectangular file. Only a handful of aerial pano shooters ever seem to do the sky correctly. I ought to write a tutorial huh?
07-18-2008 02:51 AM
HOMEPAGE  
 
 
Louisiana Helicam
Key Veteran
Location: West Monroe, LA

1/1600 shutter seems a bit high. Why aren't you using something more workable like 1/400 or so?

Formerly Viperhawk
www.louisianahelicam.com
07-18-2008 03:01 AM
HOMEPAGE  
 
 
iflybyu77
Veteran
Location: Fort Wayne, IN

At 90 degrees per second you WOULD NEED to shoot that fast.
07-18-2008 04:45 AM
HOMEPAGE  
 
 
Griffo
Senior Heliman
Location: Canberra, Australia

Quote 
At 90 degrees per second you WOULD NEED to shoot that fast.

Not necessarily. I often shoot down to 1/800 and 1/640 and I have my mount geared to complete 360 in 4 seconds. At 1/640 the camera is only panning 0.14 of a degree during capture. Images are sharp with no blur.

Next I'll be experimenting with 1/500 but I suspect this will be the limit for a 4 second rotation.
07-18-2008 04:56 AM
 
 
tabbytabb
Elite Veteran
Location: seattle

I find anything under 1/1250 in normal conditions does not achieve optimal sharpness from a full frame DSLR. No real reason to shoot slower then that given todays cameras performance at mid to high ISOs.


Tabb
07-18-2008 06:09 AM
HOMEPAGE  
 
 
Griffo
Senior Heliman
Location: Canberra, Australia

Yep, I agree. But then full frame cameras have far superior sensors (especially at high ISO's) to simple point and shoot cams.

I've got a D3 on order and I'm a little scared about hacking the shade hood off my precious 10.5 .
07-18-2008 08:57 AM
 
 
aambrose
Elite Veteran
Location: Pana, IL

I know it's been mentioned somewhere but I can't seem to find it - what is the general degree of tilt downward for say a 10mm fisheye in order to capture enough below the heli and enough beyond the horizon? 14° comes to mind for some reason.

Thanks!


Tony
07-18-2008 05:16 PM
HOMEPAGE  
 
 
AirFoilAviation
Veteran
Location: Quincy, IL.

Yeah I read where the book writer wrote 14 degree's. Once you have done these you will see how funny some remarks are. With a 10mm lens turn the camera on so you can see the image through the lens with the heli setting on the mount. Make sure you can see the tail fin of the helicopter. I'm thinking 13.65 degree's. Kidding.

You need the tail fin to be able to have a reference point on what is a rotation. If you don't you have no idea which pictures go with the others. The bottom overlap is plenty.

Hope this helps.

John

Team AirFoil
07-18-2008 05:44 PM
 
 
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Aerial Photography and Video > Aerial 360 Panos with a Point and Shoot?
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