Pozor na vzdálnost objektivu nejen od objektu, ale i od pozadí

Na webu jsem našel zajímavé a přiznám se, že pro mne trochu překvapivé sdělení, jehož autorem je 
Steve Berardi - nature photographer and software developer. Upozorňuje v něm na rozdíl v poměru objektu a obrazu na pozadí při různé vzdálenosti kamery od objektu. Povšimněte si (vedle tohoto textu) rozdílu tohoto poměru na zmenšenině fotografií, prezentovaných na webové stránce s článkem autora. Plné znění článku najdete na TÉTO adrese
Cituji podstatnou část článku:
- Well, there’s a fundamental rule about image composition that’s important to remember:
As you move closer to an object, that object increases in size more quickly than objects 
in the background. That means, as you move farther from an object, that object will decrease in size more quickly than the objects in its background.
- If that sounds confusing, don’t worry, because the basic idea is simple: as you move 
farther away from an object, you get more control of what to place in the background.
And, since the background plays such a large role in a close-up photo, many times you need 
this extra control.
- Normally, as you move farther away from your subject, you’d also want to use a longer lens to fill the frame, but I wanted to make it clear that it’s the distance that really 
matters here. So, I used the same lens at each distance and simply cropped the photos in 
post-processing. There’s a common misconception in photography that focal length causes these differences in perspective, but it’s really the camera to subject distance that matters. 
- Another option that’s available sometimes is to just move your background closer to the 
object you’re photographing. But, this isn’t always possible (especially with nature 
photography, where you’re often stuck with the background that’s already there).
Keeping your background farther away from your subject also helps keep it out of focus, 
which is another important aspect of closeup photography. That out of focus background 
will help make your subject look sharper.
Při trošce zamyšlení je to jasné, ale ne vždy a ne každý si to včas uvědomí.
(http://www.digital-photography-school.com/sometimes-close-ups-are-better-from-far-away)