I'll use the inverted enlarging color head - very even illumination, just need to modify it to use an LED light as the light source. I use the Nikon mounted on a Leitz Reprovit II copystand - very ridig, and have adapted a Zeiss 75mm S-Planar (IIRC) copy lens that is optimized for 1:1 reproduction and is very flat field. I'll switch to the Nikon 60mm Micro-Nikkor for the larger format film (mine goes up to 8x10 with almost everything in between).
I do shoot in RAW, and have been using Lightroom for processing, but haven't found where/how to invert the image - might have to bite the bullet and buy PS, or struggle through GIMP. On Sat, Aug 10, 2019 at 11:23 AM Peter Frederick via Mercedes < mercedes@okiebenz.com> wrote: > Yes, mainly negatives to positives. > > A few hints -- use an LED floodlight for a light source. Reasonably > collumated, so it reduces flare at the edges a little, and you can try > various color balance ones to reduce the fiddling when inverting. > > Shoot in RAW and use Nikon conversion software to convert to TIFF -- you > can adjust color balance, etc. Leave in TIFF flormat with extra space > below and above actual image data if you are going into PS or similar, you > want a raw file going in. > > You will have to find the correct exposure to get a good inverted image, > what looks "good" as a negative can be terrible once inverted. Dark > negatives make light positives and vice versa. Contrast can't really be > controlled at this point other than to use a condenser light source rather > than and LED flood to push it up a bit. > > Use a 90mm macro lens and a very rigid setup. Vivitar Series 1 from the > 70s/80s would be perfect as they had a flatter field and better corner > performance than Nikon or Pentax macros of similar focal length. The > better the lens the better the results, obviously. > > I pull the raw TIFF file into Photoshop, invert, then use levels to "trim" > the red, blue, and green channels down to the actual image values. Some > channels look very "thin", but this works. Adjust the neutral point in > each channel to correct colors. This should get you a very close color > balance, although it will usually look flat. > > Go to "hue and saturation" in Adjustments and push up the saturation to > suit -- I usually need a pretty good increase from movie film, standard > negatives need less, but I find I need some most of the time. > > Then I adjust contrast/brightness, then color balance. > > If the negative was decent to start with this works pretty well. > -- OK Don "Whenever you find yourself on the side of the majority, it is time to pause and reflect." Mark Twain "There are three kinds of men: The ones that learns by reading. The few who learn by observation. The rest of them have to pee on the electric fence for themselves." WILL ROGERS, *The Manly Wisdom of Will Rogers* 2013 F150, 18 mpg 2017 Subaru Legacy, 30 mpg 1957 C182A, 12 mpg - but at 150 mph! _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
