Solar Eclipse at 640mm Effective Focal Length
Solar Eclipse at 640mm Effective Focal Length I was able to catch a sharper image this time around by putting my Canon EF 70-200 mm lens and 2X teleconverter on a Canon 70D "crop sensor" camera, which increased the 400 mm focal length 1.6X to 640 mm effective. I also used a solar filter to cut the sun's radiation enough to be able to focus using 10X magnification in Live View without frying my camera sensor. I was pleased to see that my camera sensor was able to pick up variations across the surface of the sun. #solareclipseoctober2014 #solareclipse #science #news www.JeffSullivanPhotography.com