nightcat wrote in post #16521159
These "rules" are meant to be broken. Just looking at what you're saying about 100mm lenses, why have I seen hundreds of great portrait shots with a 100mm lens on crop cameras? And why are there great portraits taken with lenses far longer than this? I'm certainly glad I never followed these "rules". I would have missed out on quite a few good shots. One of the best head or head and shoulders outdoor portrait lenses is the 200mm 2.8 (and of course, the 200mm f2 is even more remarkable). I've seen great portraits taken with 200mm lenses on full frame and crop cameras.
I also really like full length standing portraits with the 135mm f2. Of course this lens can produce beautiful head shots as well. But your guidelines above would say these lenses are far too long for good results, and that's just not accurate.
I say forget these rules, go out and experiment with your portraits.
Use longer lenses and see what your results are. You won't be arrested for breaking these "rules" and you may end up with some wonderful portraits.
These are not 'rules'!!! They represent reality...
These guidelines are FL generally found by tens of thousands of professional photographers shooting 135 format over decades with studios with not unlimited shooting spaces, to WORK WELL! Most pros with studios don't necessarily have the luxury of 40' shooting spaces, they make do with 25-30'. Most amateurs are lucky to find 25' and that space is more rapidly consumed than most amateurs can comprehend...
- 3' for backdrop;
- 5-6' for space between subject and backdrop so that backdrop can be well lit independently and also blurred outside the DOF zone;
- 2' for the subject;
- 8-10' between subject and camera;
- 2' for the camera/tripod;
- 3' of walking space behind camera
Yes, some shooters do have tons of space, the luxury of increasing camera-to-subject distances to 2-3x to use 200mm - 300mm FL. But facial perspective is changed, as illustrated by these examples.
http://stepheneastwood.com …/lensdistortion/index.htm
But some pros shoot fashion, not portraits, and changing the facial perspective with very long shooting distances is NOT the concern of the client who simply wants to sell more clothing...they could care less about how well the face of the model is portrayed. And we can see a definite difference between the shot at 200-300mm vs. the shot at 100mm FL shooting distance.
You, the photographer, who
does not closely know the subject, will allow things to happen to the face which a mother might not at all forgive! I know one mother on POTN complained about the (to her) facial distortion of her child, caused by use of a lens with FL which portrayed the face from a distance at which she was not accustomed to seeing her own child!
Use longer lenses, requires longer shooting distances than 8-10' ...I did state "from about 8-10' subject distance in a studio" didn't I ?!
200mm requires 2x the shooting distance of 100mm. Increases the space requirement from 25' minimum to 35' minimum. A lot of us don't have that amount of space...go shoot the 'portrait' on location in someone's home, or in an executive office...not enough space. And if you are shooting in the mother's home, be prepared to get complaints when her child's face does not look like what she is accustomed to seeing
