I have two lens, one zoom and one prime, that I want to compare the field of view at equal focal lengths on my D800. The lenses have a tripod foot so that is what I will use to mount them on a tripod. My question is, should the camera sensor or the front of the lenses be the same distance from, say, the center of the tripod to make an accurate comparison?
Tue 03-Dec-13 10:08 AM | edited Tue 03-Dec-13 10:10 AM by ajdooley
Like Brian - I wonder why. I'm not trying to be snarky -- but would like to know what you are trying to discover. To be sure, marked focal lengths are somewhat arbitrary, especially on zooms that "breath." While it can be fun to "discover" things about our cameras, I encourage people to get on with taking photographs -- recording their world around them -- which you seem to do with great skill. I love your wildlife photos!
Wed 04-Dec-13 12:54 AM | edited Wed 04-Dec-13 12:58 AM by wwt67
Thanks to all for the information. I was leaning towards what Brian and Nick said about keeping the sensor in the same position, or the same distance from the subject for both lenses. I have used the AFS 300mm f4 with teleconverters for several years with great results. The one thing I have always wanted was VR and lately I have wanted a zoom lens for wildlife photos. Where I shoot, the deer are very tame and some will even walk within 10-20 feet of me. I guess it's from people feeding them. Well, I finally bought a Sigma 50-500mm lens. I am curious what the FOV difference is between the Sigma and my Nikon 300mm with and without the 1.7x converter. I don't expect them to be the same. It's just like Alan said, I want to know what my equipment will give me. Believe me when I say I don't spend my time shooting brick walls.