All, due to YouTube’s funkiness when it comes to spatial conforming, non-standard resolution etc, I thought I would post a simple pic here as well. On the left you will see the full blown 4096 x 1800. On the right, I spatially conformed the video (for this snapshot) to 5120 x 1440 on the timeline. I then cropped the video just to this so you can see my side by side in both resolutions. YES I know that spatially conforming a 4096 x 1800 to 5120 x 1440 will result in image degradation as what I’m doing here is basically upscaling (I would never advocate for this but am all for oversampling on larger sensors and downscaling images such as 6k --> 4K, I digress) BUT at least wanted to show you how distortion looks based on resolution etc. In the turret video I will be looking to get creative with YouTube and forcefully pushing the 4096 x 1800 for the day and night samples, we’ll see how that goes (especially as YouTube itself will push to 4K standard resolutions) and will keep you all updated as usual.
While I’m discussing this, in regards to 4K in general there are of course 2 standard resolutions used, 3840 x 2160 and 4096 x 2160, While there are other non standardized versions, going up to 2560 (or a 16:10 aspect ratio) on the vertical, those are less widely used. It’s worth noting that of the 2 standardized 4K resolutions neither Dahua nor Hikvision are implementing those or in fact any combination of the other non-standardized 4K resolutions ! Dahua comes close to DCI 4K Cinescope Cropped (2.39:1 aspect ratio) which is 4096 x 1716 resolution but again, neither are conforming to any widely adopted standard here. In fact it seems as if each company is instead looking to align to the more loose CEA UHD standards which mention terms such as ‘minimum requirements’ and ‘or larger’
Some fun facts about these implementations:
In summary, while both resolutions can work, thats not to say 1 may not appear more flattering and natural to the eye but a) neither are standards and b) neither lead to poor end results, just have to be prepared for some distortion.
In the meantime a quick teaser short (never made one before
) as I get ready to capture the shorter turret samples and comparison to another camera - Coming Soon Dahua 5849 A180 Turret Test #Shorts
HTH
While I’m discussing this, in regards to 4K in general there are of course 2 standard resolutions used, 3840 x 2160 and 4096 x 2160, While there are other non standardized versions, going up to 2560 (or a 16:10 aspect ratio) on the vertical, those are less widely used. It’s worth noting that of the 2 standardized 4K resolutions neither Dahua nor Hikvision are implementing those or in fact any combination of the other non-standardized 4K resolutions ! Dahua comes close to DCI 4K Cinescope Cropped (2.39:1 aspect ratio) which is 4096 x 1716 resolution but again, neither are conforming to any widely adopted standard here. In fact it seems as if each company is instead looking to align to the more loose CEA UHD standards which mention terms such as ‘minimum requirements’ and ‘or larger’
Some fun facts about these implementations:
- Dahua is an approx 9:4 aspect ratio (width is 2.276 times great than the height)
- Hikvision is an approx 32:9 aspect ratio (width is 3.556 times greater than the height)\
- Both are operating on a similar 7.37 MP total resolution
In summary, while both resolutions can work, thats not to say 1 may not appear more flattering and natural to the eye but a) neither are standards and b) neither lead to poor end results, just have to be prepared for some distortion.
In the meantime a quick teaser short (never made one before
) as I get ready to capture the shorter turret samples and comparison to another camera - Coming Soon Dahua 5849 A180 Turret Test #ShortsHTH
