Well, it’s time to get ready for the coming total eclipse and the last time we did this in 2017, I had a Canon 5D Mark II and got an elcheapo solar filter and it worked OK. I had a 70-200mm lens and got some decent images, but nothing that sharp. This time around, I […]
Category: Geek
life: On Thanksgiving and of Grit and Purpose
I’m going to do a series of posts that summarize the macro environment and the changing world around us. Now I know this will be controversial (and thank god this is not going to Twitter or Xwitter, you can figure out the pronunciation). Christmas is coming and I have to write my memo to Victor, […]
mac: Getting UHD 4K HDR Streaming Working on Apple Silicon MacBook
Well, this is actually much harder than you think and it is not super well documented (and most of that documentation is not for the latest MacOS Sonoma), so here goes. Change UI to “More space” The first problem is that with the MacBook Pro’s XDR panel, the native resolution is basically 4x more dense […]
tech: Transfer speeds USB 2 vs Thunderbolt 2 limited by Disk fragmentation
OK, this was a bit of a surprise. As mentioned before, we just transferred 20TB of data from a DroboPro on USB 2.0 and got a consistent 30MBps read speed. This is consistent with what Cisco says a typical USB controller can actually handle. At 480Mbps half duplex transfer rates, this is actually pretty close […]
tech: rsync to copy file with -avP no -c
OK, I’ve made many mistakes here with rsync where I picked the wrong flag. For a long time, I’ve wanted to use the -c or checksum flag and mistakenly thought this meant that rsync would checksum the files after the copy. This isn’t the case, what happens is that rsync will ignore the date, time, […]