Macro and Magnification (tubes and TC's)

[NateS]

I have a quick question that a few on here may be able to answer.

70mm macro gets you 1:1.

70mm tubes on gets you 2:1

1.4 teleconverter gets you 1.4:1 (1 * 1.4)


My question comes in when you start using both. Does the magnification change based on if the TC is against the lens (after the tubes) or if it is against the body (before the tubes)?

Example:

Camera > Tubes > TC > Lens

vs

Camera > TC > Tubes > Lens


Just wondering because you get the length w/ TC by multiplying the TC by the mag......so would it be

1:1 * 1.4 or with tubes would it be 2:1 * 1.4? Does it change to one or the other based on where the TC is placed?

 

[NateS]

bump....guessing I need to move this to a forum with more active macro shooters?

 

[Hardrock]

Overread should chime in eventually I think he has the answer!:thumbup:

 

[Formatted]

Overread should chime in eventually

Agreed.

He did it the other day, he just got loads of images of sensor dust and crap