> On Dec 18, 2017, at 6:35 PM, Larry Colen <[email protected]> wrote: > > JPEGs (for example) have 8 bits (coincidentally a bit and a stop each > represent a doubling, or power of two), which is a ratio of 1-256. What that > means is if you map the range of the sensor onto the JPEG, then it takes 16 > times as much change in brightness (contrast) with a 14 bit sensor to make > the same change in 8 bits as it does with a 10 bit sensor. > > If you do an HDR in lightroom with two images shot 6-8 stops apart of a scene > with a lot of dynamic range, and you process it without the auto exposure the > resultant image will look very flat and low contrast.
Thanks Larry. But I’m as much in the dark as ever. > It's something that kind of takes some playing around and experimentation to > get a good feel for. Yep. And likely before that a good deal of instruction. > You could go to one of you photos that you've already processed in lightroom. > Press 'D' to get into the develop module, go to the history on the left, > click on "import photo", and that will have all of the settings zeroed out. > Then hit (command or control)-single quote to make your virtual copy, and > that virtual copy is starting out fresh. Thanks for this. I’ll check it out. ------------------------------------------------------------------------------------------ Eric Weir Decatur, GA USA [email protected] "What is man without the beasts? If all the beasts were gone, men would die from a great loneliness of spirit." - Chief Seattle -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
