Lossless versus lossy is anĪrgument you might have heard me present before, to the same conclusions. Is not lossless, but you will not miss it either. Even the uncompressed mode of the new BlackmagicĬamera maps its 16-bit linear output and only stores 12-bit with a curve – this As a result, most cameras map their sensor’sġ2, 14, 16-bit linear image, to an 8, 10 or 12-bit output with a log or gammaĬurve, exploiting that we humans will not notice. Us, whether it is from linear levels 1 to 2 or from 1024 to 2048. Inefficient way of presenting light when humans are involved, as we see brightnessĬhanges logarithmically-a stop change is the same level of brightness change to Fortunately it turns out that linear is a very On HERO2 at 15Mb/s – think how fast your SD card would fill, if it could actually
This would be over 1000Mbits/s compared with today’s standard mode 1080p30 mode Uncompressed, this is the most flexible data set (for color correction), yet Sensor has a theoretical maximum of 12-stops of dynamic range. Of doubling brightness (to the point where the sensor clips.) An ideal 12-bit The first detectable level of light brings our ideal sensor from 0 to 1, aĭoubling of light goes from 1 to 2, and the next stop from 2 to 4, and so on to With an ideal 12-bit sensor, ignoring noise, there (increasing one stop), its sensor value doubles. That still seems to be popular.) Linear has the property that as light doubles Some imaging basics: Light hitting the sensor and the sensor’s response to that light, isĮffectively linear (not the incorrect use of linear to describe video gamma Working at CineForm was exciting, but it is nothingĬompared to the adventures I’ve already had at GoPro, with so much more to New camera log curve, and all the pluses and minus of color tuning, monthsīefore we would have had anything to show, but that was before we became part (non-GoPro) I would have probably blogged about helping with the design of a This synergy between the softwareĪnd camera groups, allows us to push both further. Most of the engineering was done by the super smart camera imaging team atĬineForm Studio 1.3 is setup to handle Protune image development, so all usersĬan benefit from this cool new shooting mode. Protune is also the first clear influence theĬineForm group has had on in camera features, for which we are super proud, yet
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That so many GoPro cameras are used for professional content creation –ĭiscovery Channel looks so much like a GoPro channel to me. Protune has been a long time coming, and so has this blog The latest HERO2 firmware installed, Protune is enabled with the secondary Is more flexible for creative enhancement of the image in post-production. Image is designed for color correction it will start with a flatter look that With other 24p cameras, common to professional markets. Next is adding the 24p frame rate (to theĮxisting frame rate options), greatly easing the combination of GoPro footage Quality by increasing the data-rate (decreasing compression) from an average ofĬan occur in detailed scenes or extreme motion are gone at 35Mb/s. Protune has the strongest emphasis on image While still being accessible to every GoPro user. Readers may want to know what it is and does (and may want to skip theĭesigned to enhance an even more professional image capture from your GoPro, While my team worked substantially more onĭeveloping the GoPro App, this blog is about the origins and design of Protune.īefore I geek out on why and how Protune is so cool, some
If you haven’t heard already, Protune™ firmware and GoProĪpp for the WiFi BacPac are now available - get them now.
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