I'm no photographer, but I have the same or similar problem trying to take photos of LED installations. I get a dim background and overexposed leds, consequently no colours. I think the problem is that the autoexposure adjusts for the average level, which is correct for neither on a high-contrast scene. Our eyes can cope with this by correctly exposing the segments and making the unlit parts invisible - which may not be what you want when illustrating, but works well for reading the values whilst obscuring the structure.
The answer is possibly to run them at low brightness and with plenty of incident light, so there is not so much difference in brightness between self-lit and incidently-lit parts. On Sun, Oct 31, 2021 at 11:16 AM Bartek Ogryz <[email protected]> wrote: > Hi everyone! > I would like to proudly share my latest catch: Apollo DA2500 numitron > tube. It's the biggest numitron I know, the digit is 25mm high - 5mm more, > than IV-13. > It's fully operational, but unfortunatelly my camera is unable to make a > nice looking photo of the segments glowing. Last photo is a comparison to > IV-13. > > Bartek. > > -- > You received this message because you are subscribed to the Google Groups > "neonixie-l" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/988ace97-ec8c-46ac-9cb5-ef564cac88c3n%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/988ace97-ec8c-46ac-9cb5-ef564cac88c3n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CALiMYrtfw_xUyOX3uKimQJ5N1UkA81S%3D54DHgAq5XMpW%3DySAuw%40mail.gmail.com.
