Yo, I’m new to DSLR scanning and just finished buying everything I thought I would need to get started, however I just watched Ribsy’s new video interviewing Nate and they mentioned the issues that come from scanning with vintage lens and extension tubes which as it happens, is exactly what I bought.
Does anyone have any experience with something similar? Will I still be able to get consistent results with this setup or should I really consider buying a newer macro lens?
I haven’t used an extension tube setup but have been testing some backlights. Will post them in a few days. One suggestion is before taking shots of negatives or trying to fix some odd lighting problem with them - focus on a negative, remove it (manual focus, leave it focused there) and then take shots of just your backlight. Find the exposure you’ll need and in particular if the backlight (and combination of the lens etc) gives you a nice flat light.
If the panel is dimmable, the LEDs are probably modulated and this can show up at faster shutter speeds. Try different exposure speeds to find when/where banding shows up, if at all. My ArtoGraph (which is only meant as a tracing tablet anyway) shows bands at 1/60.
Andy
I’m using a fairly new Tamron macro. With extension tubes it shows a bit more vignetting than I’d like so I suggest that you frame the negs a bit loose to allow a crop back to the evenly illuminated image.