Mark, LED panels sold for video use should not flicker. Have you tried CFLs yet? They /may/ not flicker because of the decay time in the fluorescent coating.
Perhaps rearrange your schedule to shoot during the day and use sunlight? :) On Thu, Mar 2, 2017 at 2:47 PM, Mark C <[email protected]> wrote: > A couple things I learned about the K-1 and Pixel Shift Mode: > > The banding I was experiencing is the result of the electronic shutter and > artificial light. It's just a rolling shutter effect. I saw it in Pixel > Shift mode since that uses the electronic shutter, but setting the camera to > use the electronic shutter in standard resolution / live view mode will also > produce the banding. With the incandescent bulbs I used in the test, the > banding was worse at higher shutter speeds but seemed to disappear at speeds > of 1/15th or slower. Here's an extreme example - pointed the camera directly > at a 30W mini flood light and shot at 1/8000 / f2.8: > > http://www.markcassino.com/b2evolution/index.php/pentax-k-1-banding?blog=9 > > So, I have to figure out some form of lighting that will not cause banding. > The incandescent bulbs that I tried seem to be the worst offenders, so I'll > go back to LED's. I was thinking that DC powered LED's would not flicker, > but testing that theory on some DC powered led's in the house showed that > they do. I do have some led flashlights that do not produce banding. And > there's an old propane lantern around here somewhere... > > The other thing that I learned (which is actually rather embarrassing) is > that I had not actually seen any pixel shift results till today. I'm using > PS CS6 and ACR 9.1.1. K-1 DNG raw files open just fine in ACR 9.1.1 but the > pixel-shift magic does not happen. Apparently you need ACR 9.5 or higher > before the pixel shift enhancement takes place. Compared to in-camera JPGs > or DNG's processed in silky pix, the difference is very clear. So while I > was impressed with the results I was getting with the K-1, all I was seeing > was the improvement inherent in the sensor itself and not pixel shift > resolution. > > ACR 9.1.1 is the last release that works with Photoshop CS6, so I either > have to update, start using SilkyPix or shoot JPG's. I just figured out how > to do batch processing in SilkyPix and will use that for the time being. > > Mark > > > > -- > 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. -- -bmw -- 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.
