Categories
Learning Series Technical & Testing Techniques Tips and Tricks Video

Camera Flash Communication Methods Comparison (TTL vs E-TTL i-TTL p-TTL) and Thyristor Auto Mode

I talk about camera flash communication methods (TTL vs E-TTL i-TTL p-TTL) as well as thyristor sensor based auto mode. Here is the Youtube video: Diagram for TTL and pre-flash based TTL methods: Standard TTL:This was the original method of flash power control. It happens as the film/sensor is being exposed to light. There is […]

Categories
Article Roundup Technical & Testing

Add-on Flash Light Modifier Roundup (Diffusers)

If you have used add-on flash much, you probably realized that the light directly from the flash can cast harsh light onto your subject. To get around that you can bounce the flash, or use something to soften the light. I have three light modifiers that attach to a standard add-on flash unit that are […]

Categories
Article Linux Technical & Testing Video

Second SD and Micro SD card Speed Testing Article

The latest speed testing article (October 2017) is here. The first article on the speed of the SD cards I wrote was pretty successful. I get quite a bit of traffic from that, so I think people probably find it useful. The issue with writing follow up articles is that I’m limited to what I […]