Df_WB_Demo010.NEF Color Temperature /Tint – 16469K / 22Īs you can see, the scene contains an X-Rite ColorChecker Passport target. Df_WB_Demo009.NEF Color Temperature / Tint – 9096K / 14 Figure 6. Color Temperature / Tint – 3127K / 0 Figure 5. Df_WB_Demo007.NEF Color Temperature / Tint – 3635K / -12 Figure 4. Color Temperature / Tint – 5205K / 8 Figure 3. The mouse cursor shows where exactly the white balance was taken from. The left part of each picture is the RAW, opened in FastRawViewer with the white balance set to “As Shot.” The right part is the same RAW, with a custom white balance established by clicking on our improvised white balance reference. Consider 5 shots of the same scene taken under 5 very different color temperatures, ranging from warm incandescent, to very cool high in the mountains. Ingredients and ready-to-use White Balance Referenceįor a demonstration of its use and effectiveness we’ve chosen a scene that will become (after a re-arrangement) a postcard for a friend – autumnal colors, fairy dolls, and our favorite brick wall. Your cheap, portable, easily-replaceable universal white balance reference device is done. Tightly wrap the PTFE around the eraser several times – 4-5 times ought to do it, it won’t let through any light after that. This stuff is indispensable when it comes to plumbing, you can find it everywhere in the world. Go to any hardware/home improvement store and get a roll of Polytetrafluoroethylene (known most commonly as Teflon/PTFE) white matte thread seal tape. Get a white/light gray rectangular eraser. Go to whatever store you have nearby that sells office supplies. So, welcome to LibRaw’s Wacky Cheap 5-Dollar DIY White Balance Reference Project. We’re proposing an alternative that will save you time and money, as well as make you feel good for not buying into some inefficient, overpriced product of limited usability. Problem number three is that you have to actually set up a grey card, and that might be a hard thing to do – uneven surfaces, wind, anything that makes it difficult to put the grey card down or stand it up will make it difficult to use.What if you dropped your gray card into dirt in the middle of nowhere? Problem number two – gray cards require delicate handling (no bending, no fingerprints, no dirt, no scratches, some can’t withstand moisture, etc.).Not to mention that for some shots (like it is in a studio with multiple lights/reflectors) you may need several references for white balance placed in the scene. Problem number one – a good gray card comes with a price tag from around $20 up to potentially as much as $100.
The obvious answer here is “just get a grey card!” But… This particular little idea comes from a problem that many photographers have – where do you get a good, small, white/gray surface to use for white balancing your RAW shots in conversion? DIY projects are always popular, so we’ve decided to throw another one into the mix.
0 kommentar(er)
