Images at 1:1 or thereabouts

[Ken Lee]

Typewriter Keys, 2014
Sinar P, 150mm APO Nikkor
4x5 TMY, D-23

[vinny]

Well done, Ken.
Here's one, 250mm fujinon at 500mm on chamonix 45n-2, f45, 4x5 tech pan in rodinal, kentmere glossy fiber.

[Richard M. Coda]

White Chrysanthemum
Nikon 120 Macro
Arca-Swiss 45 F Metric
TMax 100


I have more at larger than 1:1... developing film this weekend.

[Richard M. Coda]

maybe 2:1
Yellow Viking Pom
Nikon 120 Macro
Arca-Swiss 45 F Metric
TMax 100

[Richard M. Coda]

Purple Kale
Fujinon 210W
Arca-Swiss 45 F Metric
TMax 100

[Richard M. Coda]

Baby Rattlesnake
Fujinon 210W
Arca-Swiss 45 F Metric
TMax 100

[BetterSense]

What does 1:1 mean? Reproduction ratio on the print, negative?

[Richard M. Coda]

I believe negative.

[Jim Galli]

What does 1:1 mean? Reproduction ratio on the print, negative?

The image on film is life size.

[Mark MacKenzie]

Cool stuff. I have a question. 1:1 occurs at double the lens focal length, right? That is, at 420mm bellows length for a 210mm lens. So would you get the same image with a shorter lens, say a 135mm at 270mm bellows extension?

As a generalization, what lens length do you reach for when shooting 1:1?
Thanks,
Mark