Just wondering how the SGP dither amount is translated to an actual movement in PHD. I’ve been using the Medium dither setting in SGP with a 1.0x scaling factor in PHD and looking a the guide log this is resulting in a movement of up to +/- 1 (I assume pixel) in the lock position. The actual movements for each dither appear to vary quite randomly.
How much movement would I expect if I increase the SGP dither amount from Medium to High?
For the socket server (PHD1 implemenation) those are defined in PHD. It may be better to ask on the PHD forum. I want to say that they map to 1, 5, 10, 15 and 20 pixels but I can’t recall for sure.
Currently SGP only uses the socket server implementation of PHD. So we just tell PHD to dither and send in the “Amount” which is Small, Medium, High, Very High, Extreme. For SGP 2.4 using PHD2 we will have more control and we send in a specific pixel amount. The amounts we send map to the pixel values above, which should match the current PHD dither values.
Assuming that the values I have posted are correct…then yes. But I’m not 100% confident that those values are accurate. You’d have to ask the PHD folks to verify.