GoPro HERO 13 Black sequences?

[GITNE]

Thank you for sharing your linear lens captures. They look really great! The high resolution does its job, so I do not mind the somewhat unusual 8:7 aspect ratio any longer. Works well enough for Mapillary. Sharpness looks okay too, though not as good as with a physical high F-value aperture. But hey, what can you expect from just a “don’t think, click, and forget” camera?
However, things look a bit grainy when you zoom in. Do you lock ISO speeds?

Imho linear perspective imagery has the advantage over fish-eye imagery in that it is more future proof because whenever anybody is going to use the imagery for whatever use case in the future they won’t have to rectify the imagery first or painstakingly compute any distortion parameters before they can do anything meaningful with it. The slightly wider fov and sort of additional data of fish-eye imagery does not make up for the trouble people are going to have with it later. , those aberrations close to image edges look generally ugly.

[andrey0_0_7]

@GITNE

Do you lock ISO speeds?

Yes. Max 800.

[andrey0_0_7]

Above it is linear, below it is wide, the difference is not visible.
I’ll follow your advice and shoot with the corrected geometry of the frame.

[GITNE]

Usually, I lock ISO 100 to ISO 100 when capturing outside because there is so much sunlight that modern sensors, even these cheap ones in GoPros, can also capture motion very well. At dusk or in lower light conditions, like in forests or sunlight occluding urban canyons, I set max ISO speed to 200. When sunlight gets even darker then I stop capturing. Most cheap sensors get visibly grainy at ISO 400+ speeds and then vendors try to apply all sorts of algorithmic and AI magic dust to get rid of grain, mostly with pathetic results and only seldom mediocre at best. Indoors, I go to max ISO 400. And, that’s about it. Things are very different with dedicated or professional cameras but these cheap phone and actioncam sensors have their limits.