Latest activity

My first PC was a Tandy (Radio Shack) TRS-80 Model 4 that I got in 1983 or 1984.

I have an older MF Tokina 300 f/2.8 MF lens. Great glass but over the years the focus ring is too easy to move. I solved that by...

I have an older MF Tokina 300 f/2.8 MF lens. Great glass but over the years the focus ring is too easy to move. I solved that by...

So, I need to retire to catch up on my current processing needs? Let alone work with older ones. ;)

I have solar filters and photographed 2 eclipses. My mistakes in 2017 generated lessons for 2024. Knowing there was just 1 shot to get...

That’s what I did but used Blu-tac - a rubberised gel with good adhesive properties. My D7100 doesn’t have a fold down screen. Hence...

I have solar filters and photographed 2 eclipses. My mistakes in 2017 generated lessons for 2024. Knowing there was just 1 shot to get...

I remember writing a TI 99/4 program that calculated resistor values upon entering their colors and it also worked in reverse. Even...

I remember writing a TI 99/4 program that calculated resistor values upon entering their colors and it also worked in reverse. Even...

It’s not a prime lens of course. I don’t anticipate focusing on the moon would be a problem but extended to 500mm the focusing becomes...

In my senior year (1985) I could request a pass from one of my math teachers each day to use an Apple IIe in the library's computer lab...

Memories - I remember the unit coming out well, wish I would have bought some stock I remember the Radio Shack personal computer well...

For one thing, on a zoom lens infinity focus may change as the focal length changes. On primes it's probably a cost thing, as each lens...