Q: macro lens stacked with reverse prime


archdevll

New Member
Nov 7, 2010
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1 Corner of Singapore...
#1
does anyone knows the effective macro ratio stacking a 100mm macro(1:1) with a reverse prime 50mm f1.4?? is it just 2:1?

is there any difference using just a regular 100mm vs a 100mm macro lens??

should i stack with a raynox instead? if so, what's the effective ratio???



thanks :)
 

Last edited:
#2
im not the best person to explain this but a proper 100mm macro is specifically made with a short/close minimum focusing difference. Everything else is more or less the same as the regular 100mm

adding a raynox to a regular lens reduces the minimum focusing distance of the said lens a little bit.

i might be wrong though
 

shierwin

Senior Member
Dec 29, 2008
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#3
does anyone knows the effective macro ratio stacking a 100mm macro(1:1) with a reverse prime 50mm f1.4?? is it just 2:1?

Magnification ratio for 2-lens mounting for your set 100mm/50mm = 2X
(focal length of lens on body divided by focal length of reverse mount lens will give the magnification ratio}


is there any difference using just a regular 100mm vs a 100mm macro lens??

Design - macro lens has a shorter MFD

should i stack with a raynox instead? if so, what's the effective ratio???

Should be able to get the info from Raynox website
 

archdevll

New Member
Nov 7, 2010
420
0
0
1 Corner of Singapore...
#4
im not the best person to explain this but a proper 100mm macro is specifically made with a short/close minimum focusing difference. Everything else is more or less the same as the regular 100mm

adding a raynox to a regular lens reduces the minimum focusing distance of the said lens a little bit.

i might be wrong though
is there any difference using just a regular 100mm vs a 100mm macro lens??

Design - macro lens has a shorter MFD
hmm so to say 100mm macro stacked with a reverse mount has no difference when using a regular 100mm lens huh???
 

shierwin

Senior Member
Dec 29, 2008
3,466
10
38
East Coast
#5
hmm so to say 100mm macro stacked with a reverse mount has no difference when using a regular 100mm lens huh???
The formula is based on focal length of the lenses in use
So 100mm macro+reverse lens give the same mag ratio as 100mm+same reverse lens
 

shierwin

Senior Member
Dec 29, 2008
3,466
10
38
East Coast
#7
Just reverse mount a prime or zoom lens onto the body, the magnification will be much higher and the setup is lighter. Note that the shorter the focal length in use, the higher the magnification.

Samples in posts from a fellow Cser in the links below:

http://www.clubsnap.com/forums/showthread.php?t=389402

http://www.clubsnap.com/forums/showthread.php?t=389715

http://www.clubsnap.com/forums/showthread.php?t=390063
 

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