A little bit. The log format is non linear. This means there are more details in the shadows relative to the really bright areas. This mimics the human eye and

A little bit. The log format is non linear. This means there are more details in the shadows relative to the really bright areas. This mimics the human eye and brain which also do not have a linear range of sensitivity. Basically, the common unit of light in cameras (a stop) is one click on the aperture wheel. E.g. going from 1/11 to 1/16 halves the amount of light. Some cameras of course have a few settings in between. It looks linear to us but it is effectively logarithmic. The dynamic range of the human eye is much larger than the typical camera, screen, or print medium. The human eye has a range of about 20-22 stops (between black and white). A good camera might get between 12 and 14 stops. A decent screen might get to something like 8-10 and print medium is more like 5-7. Taking photos and shooting videos involves a lot of creative choices about what looks natural to us. HDR is basically taking and combining multiple exposures in a way that still looks natural to us on a medium that has less dynamic range than our eyes (-ish, a lot of HDR photography looks a bit unnatural for this reason). Digital photo processing is about compressing and moving light around to make the most of the much more limited dynamic range of the screen or print medium you are targeting relative to the camera that you used to capture that. When you do that, most of the interesting information is going to be captured in the darker portions of the image. You typically expose for neutral grey values which is only about 18% of the light. That means half of the darker information (shadows) is in that 18% range of values. And the other half is in the brighter part. Except our eyes are much more perceptive of the darker bits. So, a linear format is not ideal to store that. A log format allocates more bits to the dark half and less to the other 82%. That's a good thing because that allows you to do things like brighten shadows and pull out detail there. The log format does this by applying a log function to the raw sensor readings. That's why the format looks so flat because all the values end up being relatively close to the 18% mark (neutral). You "undo" this by applying a suitable lut that multiplies the values suitably. You deepen the shadows to near black and brighten the bright stuff to near white. The difference is that you now have full control over this process; can move the white, grey, and black points around. And you can apply color math to the log values before you apply the lut. This is not that different from how you'd process a linear format except now your starting point is better as you are using more bits for the darker parts of the image than for the lighter parts. This gives you more of the captured dynamic range to play with in post processing. The weakness of the iphone is that while it stores log format, it's not really capable of switching between LUTs on camera or while you are shooting. I'm guessing this just takes too much CPU/battery. So, you have to wait until post processing to see what the end result is going to look like. Some high end cameras have a lot of in camera processing that you can tweak in post processing.