There will be a long post, hope you will not get asleep before reading it to the end)))
Ok, I asume you need to calibrate your LUM-313G to rec709 standard.
Let`s start with proper workflow.
- You need to connect your monitor with SDI to your mac through IO card. Blackmagic preferably because Resolve will be used as patch generator (your calibration software will control Resolve to produce a sample of color that will be measured and used for calibration LUT generation). Free version will work. If you use AJA as your IO card then you will need separate patch generator (hardware or software) and it will cost you some $.
- Next comes instruments (measurement devices). Basicaly there is two type of instruments exist. Spectrophotomiters and colorimeters (yes, it
s not a same thing). If we look at xrite stuff its i1Pro series (from 1450$ at B&H) and i1 Display Pro series (from 170$ at B&H). Bad news - you will need both. Good news - more expensive one (spectrophotometer) you will need only once for a whole lifecicle of your display, so renting it is a good idea. You will use spectro to precisely set your colorimeter for your monitor. And if you need only SDR calibration there is no need fot i1 Display Pro Plus version, cheapest i1 Display Pro Studio version will work just fine. - Third is calibration software. When it comes to “moving images” there is only 3 software to choose from. Calman, Colorspace(Lightspace) and Dispcal. I call them Bad, Good and Free. I had awful experience with Calman in both calibration results and support so can
t advise them (wasted money and time IMO). Next is Lightspace (now replaced by Colorspace). If you get budget - just go for it. Their CEO Steve Shaw can be a little annoing when advertise his child on a forums, but he definitely know what he talks about, he came from postproduction industry (not from home cinema market like Calman guys). Also you get best class support (sometime I joke that Steve is not a human, but Skynets color management module). And no paid updates policy for the whole lifetime of a product, and very flexible licensing system (for £100-200 you most likely talk about 3 days rent). Bad news - it cant directly calibrate your TVLogic (manufactures fault), and if you have retail version of i1DisplayPro you will need to software hack it to work with Colorspace (nothing fancy, instructions will be provided). Both Calman and Colorspace only windows products, but they work perfectly fine in virtualized windows machine, Calman is support only on vmware Fusion back in the days, should be fixed now. And the last one from list - Dispcal. Its open source, it works on win/mac/lin and it provides good results, and unlike Colorspace it can not only calibrate your broadcast display, but also you GUI screens. It has forum for support, and developers is actively answer most questions asked. And I`d go with this route in your situation. If you will need to hardware calibrate something in future - just buy an Colorspace lic.
So if I was you, I`d bought an LUTbox (BMD Mini Converter SDI to HDMI 6G - 185$), i1 Display Pro and rent an i1 Pro for one day.
Hope this helps