Optical Principle of Macro mode


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lastboltnut

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Mar 23, 2006
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#1
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

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#2
lastboltnut said:
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

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Mar 23, 2006
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#3
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.

Del_CtrlnoAlt said:
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.
 

tltan

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Apr 18, 2005
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#6
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

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#7
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?

tltan said:
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.
 

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