This series evaluates performance of the Canon RF 24-105mm f/4L IS USM at 56mm on a close to medium distance scene on the 30-megapixel Canon EOS R.
Canon RF 24-105mm f/4L IS Aperture Series @ 56mm: Logjam at Outlet of Bear Lake
Includes images up to full camera resolution from f/4 through f/13.
View Past Bear Lake Gorge to Spire Peak
f9 @ 1/30 sec IS=off, ISO 100; 2018-10-13 16:37:08[low-res image for bot]
Canon EOS R + Canon RF 24-105mm f/4L IS USM @ 56mm
ENV: Bear Lake CA, altitude 10200 ft / 3109 m, 35°F / 1°C
RAW: LACA corrected, diffraction mitigating sharpening
arrived too late in day, freezing temps and losing light
Trout spawning physiology
Below, my 5-trout dinner is in a Ziploc bag but these heads and innards show that spring-spawning rainbow trout unable to spawn can hold their eggs a good long time. One trout held this spring’s eggs and last years as well (the light orange deflated ones).
Remains of five rainbow trout, with unspawned eggs
f5.6 @ 1/13 sec handheld IBIS=on, ISO 64; 2018-10-13 16:19:22[low-res image for bot]
NIKON Z7 + Nikon NIKKOR Z 35mm f/1.8 S
ENV: Bear Lake, altitude 10200 ft / 3109 m, 35°F / 1°C
RAW: LACA corrected
Rainbow Trout, eggs from spring still there, oversized heads indicates malnourishment [/composite f/5.6, f/8]