6/25/2023 0 Comments Gitup git2 forum![]() This made correcting the distortion in post difficult, or impossible, depending on the limits of the software. The center axis of the lens was not necessarily in the middle of the sensor. Moreover, The Git2, design and construction resulted in imprecise lens to sensor alignment. For example, I could not mix it with the output of a better camera and lens because the distortion would become noticeable. Unfortunately, while I did like the output of the camera as it came, most of the time, I knew that I there were situations where the barrel distortion would be unacceptable. One of my first attempts using my Git2 in "factory" condition (no modifications except perhaps a firmware update). In fact, I still use them for time-lapse, even "today" - though with a caveat that I do recommended considering modifications to the cameras. Time lapse became an interest feature which differentiated these cameras, and made them especially appealing for me. Other action camera makers have realized this as well. This is possible because processing only 1 frame every second gives the processor plenty of time to get its work done. Notice the "30 fps" format for the time lapse file. But for time lapse, this camera puts out files typically like this 737,583,210 bytes size 737,583,210 bytes (the same 2880 x 2160 anamorphic formatted frame, 3 min, 0 sec but 30 fps), with a video data rate 32,759 kbps without a sound track, giving a file data rate of 32,759 kbps. ![]() This particular example file had a video data rate of 32,753 kbps, audio data rate 111 kbps (monophonic, 48 kHz) and total bit rate 32,865 kbps. The files conformed to "normal" MP4 files with a typical file sizes like (actual sample file "2022_0106_130743_006.MP4") 745,647,986 bytes (3 min, 0 sec 24 fps). This latter lens was used in the Git2P, which is still available today. I do not have the specs of the other two lenses handy (hopefully I will find my notes later) but as I recall them, one was a 3.85 mm focal length all glass lens, which had the best linearity (which I will discuss further later), and last was, I believe, 4.1 mm focal length with 1 "plastic" element. It had noticeable barrel distortion, but was close enough to linear for my immediate needs. The first experimental "Git2 90 degree" (the one I bought) came with a nominal 4.35 mm all glass lens. Maybe they thought they were "close enough", I don't know.įor more information about "90 degree" lenses, see: "90 Degree Lenses" They were all slightly too long a focal length to actually cover "90 degree" for video. I never could understand why they called all three of these lenses "90 degree" lenses despite their varying focal lengths, but only one of those lenses (3.85 mm) could really be called a "90 degree" lens. I think these were 3.85 mm, 4.1 mm and 4.35 mm focal lengths. Aside from this special version of the Git2, they also sold three lenses separately, all called "90 degree" lenses. GitUp called it a "90 degree" lens version. This saved me buying such a lens separately and making the change myself. Moreover, GitUp decided to try an "experiment" putting a rectilinear lens in some of the Git2's at a small price increase. If it turned out not good enough quality for that, at least it might produce some good enough free standing clips that were a step up from "Full HD". Since I could stretch this in post to UHD, I thought that it might be usable as "B cam" fill later in UHD productions. This camera supported a "UHD-like" anamorphic format of 2880 x 2160 at 24 fps, which displayed as 3840 x 2160 "UHD". Among my first efforts was the GitUp "Git2" action camera. Instead, I decided to convert slowly and make do with whatever I could find to bridge the gap. When I decided to move up beyond Full HD video (1920 x 1080p) around 2016 - 2017, the prices for the available cameras were a substantial jump. I commend them for "sticking to the rule" of testing literally the cheapest products in their classes, but I commented that better video cameras were available for only a little more, though in retrospect, I do acknowledge that such cameras often need either modifying or working around shortcomings. Chris had a fun time with his Olympus stills camera, but Jordan's experience with his "Safari 5D" action camera was painful and expressed it so. They bought the lowest cost "new" stills and video cameras (the still camera was a discontinued product, but bought "new") from their favorite store and ran their standard tests, and gave fair reports. I think that this was a semi-serious effort. On "DP Review TV" posted their "Cheap Camera Challenge" on YouTube.
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