Referring the statements of reader "night86mare" in the discussion on "focal length", we would like to clarify the following.
I'm not aware that I called anyone here names. I think my points have been spelled out pretty clearly. If you don't afford my assurances some credibility, then I don't see how you would believe anything I would write further on, and any discussion would be futile.
You're free to believe what you want. You can even believe in fantasy focal lengths if that floats your boat. I don't depend on convincing you of anything. I am just as free to not waste my time to force-feed a basic scientific concept to someone who refuses to accept it.
We thank the writer for his feedback and his interest in science education. We'd further like to assure the general public that we remain committed to scientific outreach for those who are willing to listen.
I totally agree with you in this thread.
People who don't understand will claim that their 200mm lens on their Olympus DSLR is 400mm and therefore longer reach than the 200mm on a full frame DSLR.
But if the person using 200mm lens on the full frame shooting at the same distance and then do a crop in post-processing, he can easily get "300mm", "400mm", 600mm, "800mm" or even "1600mm" simply by cropping appropriately.
People who really understand it know that the 35mm equivalent refers to Field of View and not focal length.
Unfortunately or fortunately for manufacturers, most consumers do not understand and threfore erroneously think in terms of focal length. That is why we see many people say : "hey, my Olympus DSLR or 1.5x crop camera is better than full frame for birding because it has a longer reach" or some Prosumer camera users making the mistake that their camera has longer reach than a DSLR with a 200mm lens when the actual focal lenght of their prosumer cameras are only with 70-88mm lens..
Due to this unfortunate common practice of stating focal length in 35mm format equivalent, there is now widespread misconception that 35mm format equivalent refers to focal length instead of Field of view, resulting in many people making wrong conclusion and assumption about the focal lengths of their cameras and thus the actual magnification factor and their cameras' ability to capture details.