IFR Paso Robles for Lunch & TurboDiesel DA40 Flight (ATC)

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waynemcc999
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IFR Paso Robles for Lunch & TurboDiesel DA40 Flight (ATC)

Post by waynemcc999 »


On today’s flight… Hold in Lieu of Procedure Turn, Jet-A, Single Lever ECU, and the Overhead Break. Levi and I fly to Paso Robles to meet Russ (aka "Boatguy") for lunch and a ride in his super-efficient TurboDiesel DA40. On the return to Santa Barbara we cross the 4000’ Santa Ynez ridge and request an Overhead Break for a drop-it-in landing. Wayne, GeezerGeek Pilot
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Re: IFR Paso Robles for Lunch & TurboDiesel DA40 Flight (ATC)

Post by AndrewM »

Very cool Wayne. Prop filter in the Xmas stocking for you?
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waynemcc999
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Re: IFR Paso Robles for Lunch & TurboDiesel DA40 Flight (ATC)

Post by waynemcc999 »

AndrewM wrote: Sat Nov 07, 2020 10:16 pm Very cool Wayne. Prop filter in the Xmas stocking for you?
Andrew, good point. For the two legs in Levi's C182 I was using my GoPro 8 with prop filter. For the short little flight to experience Russ' awesome DA40NG I just used my iPhone (sans filter) for expediency. The video quality of the iPhone 12 Pro is nicely improved, but doesn't provide near the stabilization of the GoPro.
Thanks for watching!
Wayne
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Boatguy
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Re: IFR Paso Robles for Lunch & TurboDiesel DA40 Flight (ATC)

Post by Boatguy »

Did you shoot at 4K or HD?
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waynemcc999
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Re: IFR Paso Robles for Lunch & TurboDiesel DA40 Flight (ATC)

Post by waynemcc999 »

Boatguy wrote: Sun Nov 08, 2020 1:15 am Did you shoot at 4K or HD?
4K, but I didn't take time to align the camera, and 1/3rd of the image was the canopy roof so I cropped that out :( .
Do you think stabilization would be better at only HD?
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Re: IFR Paso Robles for Lunch & TurboDiesel DA40 Flight (ATC)

Post by Boatguy »

There are three ways to accomplish stabilization:

1) Move the sensor during image capture to counter the motion of the camera. Essentially holding the sensor still and the camera moves around it. This is what is done in mirrorless cameras.

2) Move the elements of the lens rather than the sensor. This is necessary on cameras that have a mirror and can't move the sensor or film.

3) Real time image processing in the camera which identifies an object and then moves a resolution window around a larger image capture resolution. The iPhone 12 sensor is slightly high resolution than 4K so there is some room for image stabilization in the camera.

There are a few choices for improving the stabilization, not mutually exclusive.

a) Shoot with the wider angle lens which will reduce the perceived jiggle in the same way a telephone enhances it.

b) Try shooting at HD and seeing if the onboard stabilization is better since there is more leeway between the sensor resolution and the final video resolution.

c) Try stabilizing in post processing. I know this feature is in all the Adobe video editing apps, from Rush to Premier Pro. Depending on the amount of stabilization necessary this could produce the best quality by giving up only as much resolution as is necessary to produce an acceptable video.
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Re: IFR Paso Robles for Lunch & TurboDiesel DA40 Flight (ATC)

Post by waynemcc999 »

Boatguy wrote: Sun Nov 08, 2020 1:58 am There are three ways to accomplish stabilization:
Russ, I will experiment some more with the iPhone 12 video... but the GoPro seems to do amazing stabilization out-of-the-box (I believe its sensor works per your #3 at crazy high resolution then auto-rotates-centers the image to affect a stable video at "reduced" 4K).
Good descriptions... thanks!
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Re: IFR Paso Robles for Lunch & TurboDiesel DA40 Flight (ATC)

Post by chili4way »

The GoPro Hero 7 lens has a 17mm focal length. The iPhone 12 Pro ultra-wide (0.5x) is 13mm, the wide (1x) is 26mm, and the telephoto (2x) is 52mm (all 35mm equivalent). Try the ultra-wide lens on your iPhone 12 Pro and see how you like it. [added 35mm for clarity]
Last edited by chili4way on Sun Nov 08, 2020 3:58 am, edited 2 times in total.
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Re: IFR Paso Robles for Lunch & TurboDiesel DA40 Flight (ATC)

Post by Boatguy »

chili4way wrote: Sun Nov 08, 2020 3:22 am The GoPro Hero 7 lens has a 17mm focal length. The iPhone 12 Pro ultra-wide (0.5x) is 13mm, the wide (1x) is 26mm, and the telephoto (2x) is 52mm (all equivalent). Try the ultra-wide lens on your iPhone 12 Pro and see how you like it.
I agree that the wider lens will help, that's a good observation. And post processing can crop the video down to the area of interest.

The actual focal lengths are tough to compare without knowing if those are 35mm normalized, or real. If real, then without knowing the size of the sensor, they don't tell us anything.
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