Forums

Fall was pretty recent, it was also an eternity ago.  I went out with a variety of different lenses, captured the colors and annoyed the local fauna.  In 2009 I went to the MV alpaca farm with my (sainted, then-septuagenarian) mother on her birthday.  I'm sure I posted a number of those shots at the time. I used the never good 75-300mm consumer zoom, and spent ages in Photoshop, masking, denoising and sharpening.  I'm much more lazy less interested in such labor intensive editing these days.  We went back to the farm for her birthday this year.  I used the also not very good Tamron 28-300mm.  So far I've only edited a few shots (see above).    Llamas serve as guard animals at the alpaca farm.   Gidget the kitty doesn't know or care about "color balance."   Molly being characteristically unamused at the presence of humans.  This is the only shot I've ever gotten of her where she was lit properly, in-focus and looking at me.  Of course, she's glowering.   Changes afoot as the Hathaway house.  Again with the craptastic Tamron.  I haven't used it that much, but it's a bit of a "bad penny" lens.   The same taken with my radioactive 1970s Super Takumar 50mm F/1.4.  It's crazy how pricey this lens has become.  Mine it's not the most desirable version.  The very rare first iteration, which proved too expensive to produce, is a collector's bauble at this point.  My version isn't that rare, but copies of it have a nasty tendency to yellow (because radioactive.)  My copy is bit yellow, but for now that means it has a permanent "warming filter" installed.  That makes it ideal for fall colors.   Same scene at twilight, taken with my beloved Canon EF 50mm F/1.8 Mark I.  Honestly, in spite of all the lenses I own, I could shoot with a 50 the vast majority of the time and be happy.  In the parlance of our times *laughs in Henri Cartier-Bresson.*   Morning Glory Farm, or as it is known by the younger generation, "MoGlo" had quite a display of pumpkins.  Even though I live in walking distance, I only managed to get there once.  In my defense, this fall got ball-freezingly cold quickly.     My OCD neighbor's yard, taken with the Takumar.  It excels at golden hour shots.   17-40mm at the wide end.  I used to love the super wide angle look, but a decade and a half of cameraphone photos have made me reverse that stance more or less completely.  Now I greatly prefer the telescopic compression that happens at focal lengths greater than 100mm.   Same idea with the nifty fifty.  Taken at F/5, which is a little silly.  In retrospect I should have committed one way or the other and either stopped down significantly or gone full retard at F/1.8.  Tune in next time for more fat squirrels, Christmas lights and even some short lived snow.  Spoiler alert: The EF 100-400mm is a goddamn bazooka is tiring as all fuck to handhold for any length of time.

Almost, but you also need to connect to GND on the amp board, so:  First, connect GND on the amp board to PSU1+ and PSU2 -. This is now your relative ground point.  For the PSU1 board, since it has + connected to GND, it's negative terminal will sit at -550V relative to GND, so connect that to B-. For the PSU2 board, since it has - connected to GND, its positive terminal will sit at +550V relative to GND, so connect that to B+.     

So, like connect the PSU1 +  and PSU2 -. Then the remaining - and + from both PSU to the B+ and B-, leave the GND unconnected. Do I understand it correctly?

Take one + from a PSU and - from another, connect them together to form ground. Then connect the other +/- to the B inputs.

Quick question: how did you connect the floating PSU outputs to B+, B−, and GND in your build?