12/18/2023 0 Comments Lutcalc v709 lc709aOn Sony's FS7 it's 2,000 and on Sony's A7RII it's 800. For Sony's A7SII, that base ISO is 1,600. Once they do, they force you to shoot in that ISO or above so that you're always getting peak performance from your sensor. Each camera's sensor has a native base ISO and camera companies work hard to find out what that is on each sensor. ![]() It's set up this way because cameras are designed to shoot their best dynamic range and achieve their best performance when using their native base ISO. Almost all cameras have higher base ISO's for log, whether it's Canon's C300, Sony's FS7, Sony's F5, Sony's F55, Panasonic's VariCam LT, etc. It may not be ideal, but that's what every other production company does when shooting to grade. It's also so fast that I can grade my entire timeline in minutes, unless I decide to be a perfectionist of course!Īs to those asking me in this thread how I deal with the higher base ISO of log, well, I just add ND. I've been grading my footage this way for years and it works every time. This is what most professional video productions companies do when they elect not to use an outside color grading software like DaVinci Resolve. From there you can make your minor changes to perfect each shot. All it takes is shooting log, creating an adjustment layer, dragging that layer over your timeline, applying the LUT to the layer and then dragging any clips you want to use under that layer so that all of your footage immediately has color and looks great. And since I shoot everything overexposed, this is the step where I drag my exposure down on the individual clip. This does not affect the LUT, but instead allows the original clip to be modified right there on my timeline with the LUT still applied. From there, if I decide a clip needs to be adjusted further, I just click on the clip and make the adjustment in the Lumetri Color panel right there on my clip. With this LUT applied to my adjustment layer, this means that any clip I drag onto my timeline now automatically has Sony's LC709A LUT applied. You can find this LUT online for free by Googling it. This LUT was specifically designed by Sony to give accurate color to Sony's FS7 and F5 cameras when shooting in Slog3 / S-Gamut3.Cine, but it works great with Sony's mirrorless cameras when shooting in Slog2 or 3 with S-Gamut3.Cine. In that adjustment layer, I pull up Lumetri Color and apply Sony's LC709A LUT. When I start my project in Premiere, I create an adjustment layer and drag it across the entire timeline, putting it several layers up so that when I drag my clips onto my timeline, they will be underneath the adjustment layer. I shoot everything on my A7SII in Slog2 / S-Gamut3.Cine, overexposing by 1 to 2 stops to ensure a clean image. To answer a question asked on here, I use Premiere Pro to edit and apply LUTs. I think you guys are overcomplicating it a bit. So far S-Log2 has been sufficient for my needs, and I believe it's a better match to the 8-bit depth limit of all of Sony's non-cine bodies. This has led to proper WB being my biggest challenge so far. ![]() The one thing I don't like is that it can only sample a single pixel for WB, instead of averaging WB over an area. You can also do exposure compensation and white balance tuning very easy. I've only gotten the hang of probably 5% of LUTCalc's capabilities - it's extremely powerful, but for a basic LUT (such as S-Log2/S-Gamut to Varicam V709 gamma + LC709A gamut - I know I linked the basis for that recently, I think on another post in this thread). Actually in many cases, I just use the camera's own preview thumbnail JPEG for this purpose and it works great. Yeah, I'm a bit confused as to how he is able to even guess at the appropriate adjustments if he's adjusting BEFORE applying the LUT.Īt least for my workflow (which I'm still refining as I'm still learning the ins and outs of S-Log) - I export a JPEG of one frame of my video and then use that as the preview image in LUTCalc, and do all of my LUT tuning there. Looks great! What video editor are you using that allows Sony LUT adjustment layer on to of your timeline?
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