Optical Principle of Macro mode

[lastboltnut]

can someone please enlighten me the optical principle of macro mode? In SLR....why do we need to push that button to engage macro mode?

Thanks.

 

[Del_CtrlnoAlt]

can someone please enlighten me the optical principle of macro mode? In SLR....why do we need to push that button to engage macro mode?

Thanks.

i dun think u need to press any button for macro in SLR... if a lens is macro, the focusing can go beyond the standard focusing range, up to 1:1 or perhaps more, norm, 1:1 1:2 1:4 but there is a switch, that prevents the lens from going beyond the standard focusing range.

if u talk about prosumer/consumer camera with the button, it might be same as SLR, its just a switch that lets the focusing go beyond.

 

[lastboltnut]

Yah, it's the switch I am talking about. So, what does the switch do? Or its just there to prevent blur user from going into macro mode without knowing?

Thanks.

i dun think u need to press any button for macro in SLR... if a lens is macro, the focusing can go beyond the standard focusing range, up to 1:1 or perhaps more, norm, 1:1 1:2 1:4 but there is a switch, that prevents the lens from going beyond the standard focusing range.

if u talk about prosumer/consumer camera with the button, it might be same as SLR, its just a switch that lets the focusing go beyond.

 

[dr34mc4st3r]

i think the switch limits the focusing distance for close up subjects

 

[lastboltnut]

Ok, so I think it's just a limit switch for the photographer to do a deliberate switch...thanks.

i think the switch limits the focusing distance for close up subjects

 

[tltan]

the macro mode is there in entry level DSLR to allow for slightly closer subject to lens distance for shooting with non-macro lens. But it isnt that great. ;p Extension tube, reverse 50mm beats this hands down.

 

[lastboltnut]

I think those are taking advantage of the crop factor, and is close up and not macro....just like the S3 IS with crop factor of 6 can do "Super Macro" at 0cm, it is actually not macro, but just close up....can I say this?

the macro mode is there in entry level DSLR to allow for slightly closer subject to lens distance for shooting with non-macro lens. But it isnt that great. ;p Extension tube, reverse 50mm beats this hands down.