| lens specs below, read before you ask please. Comparing 5 lenses to see difference in focal length, aperture size and depth of field. All on a canon 7D at 720/60fps iso 125, shutter speed 60, generally speaking the aperture was wide open, except where noted. All shot from same tripod at same spot within minutes of each other. 7:00pm July 27, 2011 Asheville, NC about 2 hours before sunset, right after a rain. I wasn't planning on sharing this, so I am muttering to myself, but found it useful so I decided to share it. Mostly this is around the recommendation that you get prime lenses to shoot video. I think it depends on if you will be dealing with low light or not. It is hard to focus sometimes with the 7D, especially in low light or if subject is not up in foreground. Audio is from camera. What do you think of the various bokeh? No surprises the primes let in more light, especially the faster ones. The one surprise was the prime 135 had a bit narrower view angle than the zoom at 135. not sure why that would be. If all lenses need to be multiplied by 1.6 to get the focal length as the camera reads it, than we are looking at 27mm-400mm of focal length compared. I used the nikon lenses with a Kawa adapter, I like it. lenses compared canon EF-S 55-250 1:4-5.6 IS canon EF-S 17-85mm 1:4-5.6 IS USM canon EF-S 28-135mm 1:3.5-5.6 IS USM nikkor 24mm 1:2.8 prime 798324 nikkor 135mm prime 1:3.5 174601 |
