I captured these dolphins at sunrise while photographing birds in the Aransas National Wildlife Refuge earlier this year. We headed out early on a chartered boat in order to capture the birds at first light. As the sun was coming up I spotted these two dolphins swimming around in the water bathed in sunrise colors. It was a sight to behold.
You will notice from the camera data below that I used a 1.4x extender (aka teleconverter). I’ve not discussed the use of these devices but, as you can imagine, it extends the reach of a lens by that multiplier (1.4 times the length). For this photograph I used a 100-400mm lens set on 400mm. With the 1.4x extender it gave me a total reach of 560mm. There are some benefits and tradeoffs that come along with using a teleconverter. The primary benefit is that you can increase the focal length while adding minimum weight to your bag and saving a lot of money as compared to bring a long lens. The tradeoffs include sacrificing large aperture settings, slower focus speeds, camera shake and image degradation. It is important to be aware of these tradeoffs and use the extender under the right conditions (solid tripod, bright light, slow-moving subjects.
This image was taken with my Canon EOS 5DS using my Canon EF 100-400mm f/4.5-5.6 II Lens + 1.4x III which extended the lens reach to 560mm (40mm x 1.4). The camera was set on Manual mode with the aperture set at f/8, shutter speed at 1/160th of a second and the ISO set at 250. This is a single image processed in Lightroom and Nik Color Efex Pro.
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© 2016 T. Kahler Photography
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