Focal length data extraction with power zoom lens

[agathe]

Dear Inspire 2 pilots,
I am flying an inspire 2 with a zoom lens (14-42mm) and a handwheel connected to the remote to be able to zoom in and out when recording a video. I would like to access the data about my focal length during the flight, just like we get the altitude data displayed as a subtitle on the video. Is there a way to do this? I tried DJI telemetry overlay, but could not find any focal length option, and the focal length is not given in the SRT files.

Thanks in advance

 

[niki]

I'm using only primes, but when shooting in DNG I can import a single frame in Light Room as photo and there I can see the metadata for focal length, aperture and shutter speed. Not sure what will show on zoom lens. On other hand when I shoot with canon camera and canon 70-200 zoom lens, LR shows at what focal length was the shot taken.

 

[agathe]

I'm using only primes, but when shooting in DNG I can import a single frame in Light Room as photo and there I can see the metadata for focal length, aperture and shutter speed. Not sure what will show on zoom lens. On other hand when I shoot with canon camera and canon 70-200 zoom lens, LR shows at what focal length was the shot taken.

Thanks for your answer! I am not sure I get you, are you speaking about photos or videos? Is your "single frame" a photo you shot or something extracted from a video you shot? I never shoot photos, only videos... And I guess no metadata can be found in screenshots taken in VLC...

 

[agathe]

Here is a frame extracted from one of my videos, I tried to extract metadata through exiftools, but just like for the video, no focal length provided...

 

[niki]

You need to have DNG license and to shoot video in DNG sequence. Quicktime doesn't support this type of metadata.

 

[agathe]

You need to have DNG license and to shoot video in DNG sequence. Quicktime doesn't support this type of metadata.

Got it! Thanks for your answer!