I have been photographing negatives for a long time using a light table. I recently moved into mirrorless and this time I got serious banding. The amount of bands changes depending on shutter speed. The attached images was shot using the Sony a7RV and 90mm 2.8 Macro. The exposure here is 1/30th @ f/5.6. The other photo is the setup. I use ABS tubes cut to a specific length for a given negative size which eliminates outside light and is spot on for filling the frame each time. The light table is old (from the 1980s) and used daylight balanced fluorescent lights. I am wondering if this is a light cycle/flicker issue of some sort. If I shoot much slower, 1/4th or so, the banding is much less noticeable. However, then I have issues with motion. QUESTIONS: 1) Am I correct that the light source is the issue? 2) Can someone recommend a better light source?
Thanks for any help with this!
