Part 5 of 6 from a mid October trip to North Dakota’s Theodore Roosevelt National Park.
The fun doesn’t stop after the sun goes down! In reality, often the last thing you want to do on an exhausting photo trip is go back into the field after dark. You’re tired, and you know the alarm will go off WAY before sunrise but you do it. And it is always a blast!…The kind of fun that was hard to imagine in the film days.
Today’s digital SLRs are capable of amazing low-light images. In the “film days” we were limited to ISO 400 film…and that was often unacceptably grainy. Now I can shoot at ISO 12,800! (that’s not a typo) and there are other cameras that can go beyond that. The image above was taken at night with only a flashlight illuminating the hoodoos. I was able to make a relatively short exposure (30seconds) due to the High ISO capability of the Canon 7D (though not nearly as good as the Nikon D3 series). Of course, you always want to shoot the lowest ISO for the least amount of noise. In this case I used ISO 1600. A short exposure also limits the movement of the stars in the final image. Click on the image to get a better look at the stars.
How big do you think the hoodoos are in the image below? It is really a miniature landscape as each hoodoo is only 12-24 inches tall. Did you think they were many feet tall? The image was taken with the Sigma 10-20mm lens from a very low angle as I wanted the hoodoos to appear large and silhouetted against the sunset. I kept the camera moving in a circular motion while clicking the shutter and popping the flash. The flash froze the hoodoos but the slow shutter speed and motion blurred the sky colors.
The bottom image is an HDR created in Photomatix Pro. I like these surreal artsy images known as High Dynamic Range. Some people hate them. The program takes several of your images of a scene with a great range of contrast and combines them into one image with a medium exposure. In this case I combined only two exposures—one for the foreground and one for the sky. You can then tweak the look from natural to bizarre. Fun stuff. Note that it is the same hoodoos as the previous image and taken only minutes apart!
Stars & Hoodoos: Canon 7D, Sigma 10-20mm at 10mm, f4 at 30seconds, ISO 1600, flashlight, tripod
Hoodoos Sunset: Canon 7D, Sigma 10-20mm at 10mm, f16 at 1/20 second, ISO 200, flash at -2EV, handheld
HDR Hoodoos: Canon 7D, Sigma 10-20mm at 10mm, f16 at 2 exposures, ISO 200, tripod