What is 1 to 1 MACRO?

[Tin Can]

Perhaps I have it wrong

I use my Deardorff S11 studio for 1 to 1 Macro with 11X14 film

This is what I think it is...

51043702316_8d630d573c_c by TIN CAN COLLEGE, on Flickr

[Tin Can]

This is the print 11X14 contact print from X-Ray

50792636846_affa499427_c by TIN CAN COLLEGE, on Flickr

[uphereinmytree]

1 to 1 macro is when the subject is the same size on the focus screen as it is in real life

[Dan Fromm]

1 to 1 macro is when the subject is the same size on the focus screen as it is in real life

Generalize that a little. Subject size = image size on sensitive surface. I mention this because there are SLRs whose viewing area is smaller than the sensitive surface.

The OP is making the same mistake as the person who started this https://www.largeformatphotography.i...ellow-possible discussion. Neither of these posters is fluent in the common language.

[Tin Can]

Generalize that a little. Subject size = image size on sensitive surface. I mention this because there are SLRs whose viewing area is smaller than the sensitive surface.

This is the ULF Thread

Not Tiny Camera


The OP is making the same mistake as the person who started this https://www.largeformatphotography.i...ellow-possible discussion. Neither of these posters is fluent in the common language.

[xkaes]

Dan's exact, of course. 1:1 (1X) mean the subject is the exact same size as the film/sensor. In the case if 35mm, it's a 1x1.5" subject -- a postage stamp. In the case of 4x5" film, it's 4x5" -- the size of a CD.

2:1 (2X) means the subject is smaller -- HALF the size of the film/sensor -- and magnified (x 2).

1:2 (.5X) means the subject is larger -- TWICE the size of the film/sensor.