Why aren't all lenses macro?

Heitz · Feb 28, 2012

I'm trying to understand what the physical limitation is that prevents all lenses from focusing down to produce 1:1 images on the sensor. Optically, what internal changes are necessary?

Robin Usagani · Feb 28, 2012

It is the minimum focusing distance. You have to design the lens differently to be able to focus from really close.

jake337 · Feb 28, 2012

I think they usually have a floating element that allows 1:1 focusing????? I'm not really sure to be honest. Maybe some more knowledgeable in lens optical physics and designs can let you know.

o hey tyler · Feb 28, 2012

Why aren't all zoom lenses f/1.4 zooms?

MLeeK · Feb 28, 2012

Cost prohibitive. The motor in a macro lens focuses slower as well. Not good for other things.

480sparky · Feb 28, 2012

Why aren't all lenses 1" long and weigh 3 oz?

2WheelPhoto · Feb 28, 2012

Why aren't all cams full frame and black and heavy?

CMfromIL · Feb 28, 2012

Why can't they put a 'pro' button on my camera so every shot I take is in focus, perfectly cropped, color balanced, non-grainy, and ready to print on a billboard 50'x30'?

Oh wait...they do. I just need to go to BestBuy to get a point-n-shoot. Silly me.

LightSpeed · Feb 28, 2012

Why can't a digital camera be manufactured that produces no noise at very high ISO?

480sparky · Feb 28, 2012

I'm still waiting for the flying cars that were predicted in the '50s.

2WheelPhoto · Feb 28, 2012

CMfromIL said:
Why can't they put a 'pro' button on my camera so every shot I take is in focus, perfectly cropped, color balanced, non-grainy, and ready to print on a billboard 50'x30'?

Oh wait...they do. I just need to go to BestBuy to get a point-n-shoot. Silly me.

I heard if you complete their survey upon exiting the store they'll give you a huge custom watermark to use too