Why do cameras call it "Macro Lens" if it zooms in and is used to capture tiny objects? Shouldn't it be "Micro Lens"?

Macro and Micro are both used in photography.

Macro generally is when a lens will reproduce an object the same size on film/sensor as it is in life.

Micro is for smaller subjects at higher magnifications such as using a microscope.

Macro generally is when a lens will reproduce an object the same size on film/sensor as it is in life.
Hey that's pretty cool. Is it really what happens?
- Yep, most macro lenses such as the 90 to 105 range from Sigma, Canon, Nikon and their ilk tend to have a designation like 1:1 in the description.
  This is normally based on a 35mm frame size, for cropped sensors the magnification is greater.
- Depends, I think. In the same order of magnitude definitely.
  Edit: this makes me wonder, is it possible to get an orthographic perspective with an ordinary size (but maybe not standard) lens on a normal camera?

As an aside, a "slow motion camera" and a "high speed camera" are understood to be the same object, being a camera that can capture at high frame rates, to slow down apparent motion in the video output.

Which is fine, because the opposite is a time lapse camera.

Two train of thoughts. Making something 1:1 ratio is a true "macro" lens for photography. Because you're increasing the size of the object to match the size of the sensor.

Then you got microscopes which makes things much larger than life.

For which manufactures call it what? Probably all marketing, but this makes the most sense in my life for justification.

Also Micro lenses are also used for marketing for CCD and CMOS sensors.

https://en.m.wikipedia.org/wiki/Microlens

To add further confusion, I'm not sure if it's still the case, Nikon used to brand their macro lenses as Micro Nikkor.

A macro lens produces a large image. It's a bit silly but I guess once these things get a name it's hard to get it changed.