Sony RMT-P1BT Wireless Remote - 11 Jan 2023
This evening I spotted our Eastern Screech Owl poking its head out of the owl box at the back of the Quinlan Prairie here at Brownton Abbey. The light was bright enough that I ran to the car to grab the scope and digiscoping camera and try to take some images from the back deck. Knowing that I'd be needing some high magnification I broke out the Sony RMT-P1BT Wireless Remote so that I'd be able to take advantage of slower shutter speeds.
The wireless remote is a joy to use. With buttons for selecting STILLS or MOVIE I can trigger the Sony a9 without touching it. Even though the scope is on a tripod, the rig is on the deck and subject to vibration just from the slightest touch. Using focus-peaking on the camera I could obtain precise focusing of the owl 150' away then stand still until the vibrations subsided. I could then trigger the camera to capture 20 fps with all images tack-sharp. At 25X magnification on the scope the Sony 40mm f/2.5 G lens produces an effective focal length (EFL) of 1000 mm. So, a shutter speed of 1/30 second at ISO 1600 requires a stable solution.
The RMT-P1BT Wireless Remote came in even more handy when I zoomed the scope to 60X for an EFL of ~2400mm! At ISO 1600 I needed a shutter speed of 1/13 second to get the image.