My first trip to Bolivar Flats along the Texas gulf coast in 2020 was magical. One of the rare times when the Gulf of Mexico was very calm and the pre-dawn light was amazing. Caught this great blue heron coming in for a landing and was able to get some decent shots with very slow shutter speeds @ 1/100 & 1/80 sec. Had to crank my ISO up to 6400 and use 1 2/3 exposure compensation as it was before the sun came up. Wish that I would have used ISO 10,000.
Taken with Canon 1DX and Canon 500mm F4 IS II with 1.4X III teleconverter mounted on Skimmer ground pod with Wilberley II gimbal head
1/100 sec @ F5.6, ISO 6400, evaluative metering, + 1 2/3 exposure compensation, from ground pod
1/80 sec @ F5.6, ISO 6400, evaluative metering, + 1 2/3 exposure compensation, from ground pod