Caucasian skin tone, in an average exposure, generally sits around code value 600 on Resolve’s scopes. The idea of video levels is related to voltages in the analog days and is somewhat archaic, but many traditional video professionals still relate to such levels in terms of exposure. There is some confusion about scopes in Resolve since it displays “code values” for 10 bit data rather than traditional “video levels”. In 2019, Scopebox switching pricing strategies to more of an annual subscription approach. Be aware that it can really tax your system and drain a laptop battery quickly however. It’s a very full-featured signal monitoring tool for creative work and you can even record the signal. Scopebox is also a handy tool during production. This might not help you much when it comes to reducing system strain, but it’s an easy way to get the power of Scopebox on a single system. Some NLEs like Premiere and Resolve can send the video signal via software to Scopebox on the same system. I run it on a laptop and use the small, bus-powered BlackMagic mini recorder hardware to get the video signal into the computer. ScopeBox is a piece of software that turns your computer into a very professional set of scopes. Levels issues or problematic cabling will affect what you see on your grading display, but Resolve’s software scopes won’t help you spot it. In addition to all these features, it’s always wise to let your scopes monitor the same signal chain your grading display is using. Newer scopes can also chart changes over time, provide false color overlays, superimpose traces, and provide target markers. Scopebox provides tools for assessing RGB gamut errors (Scopebox channel plots help these sorts of errors or if you have the money go for a Tek Double Diamond) other scopes like HML balance help you remove color casts quickly but they’re also highly configurable in that you can enlarge the data trace and position things how you need them for your setup. There’s also typically more power in a dedicated outboard scope. If you’re on an underpowered system, or need every last ounce of your GPU for computing the grade, handling the scopes’ processing externally can be a noticeable improvement, and they’ll always play realtime. External scopes simply take your video signal as an input, usually via SDI or HDMI, this means there is minimal GPU strain involved on processing the scopes themselves. Resolve has scopes built in, and for casual use there is no problem using them, but there are a couple reasons you may benefit from using scopes outside of the color application. It’s a very useful tool when you’re trying to eliminate color casts because anything black, white, or gray should line up horizontally since it contains equal parts red, green and blue. A waveform broken into R,G and B channels shows the individual luminance of red, green and blue.
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