The ultrawide 23 mm lens offers a 15 mm aequivalent (24x36mm). For optimal results we recommend the use of a lens shade type B1 or a comparable compendium like the one from Lee Filters.
Product remarks: Rodenstock / ALPA HR Alpagon 5.6/23 mm, LB, custom made for ALPA by Rodenstock.
ITEM NO | 160.018.023 |
... L E N S D A T A ... | |
FOCAL LENGTH | 23 mm |
FOCAL LENGTH EFFECTIVE | 23.82 mm |
APERTURE | 5.6 f |
IMAGE CIRCLE | 70 mm |
CLOSE FOCUS | 0.25 m |
FILTER THREAD | 72 mm |
... C O M P A R I S O N ... | |
COMPARABLE FOCAL LENGTH @ 33X44 | 19 mm |
COMPARABLE FOCAL LENGTH @ 40X54 | 15 mm |
IMAGE CIRCLE | 70 mm |
LENS SHIFT X @ 33X44 | 9 mm +/- |
LENS SHIFT Y @ 33X44 | 11 mm +/- |
LENS SHIFT X @ 40X54 | 2 mm +/- |
LENS SHIFT Y @ 40X54 | 2 mm +/- |
BEST F STOPS DIGITAL | f8 - f11 |
BEST F STOPS FILM | f8 - f22 |
... S H U T T E R ... | |
CLOSE FOCUS | 0.25 m |
SHUTTER TYPE | Copal 0 |
FASTEST SHUTTER TIME | 1/500 sec |
LONGEST SHUTTER TIME | B, T, 1 sec |
FASTEST FLASH SYNC TIME | 1/500 sec |
BEST F STOPS DIGITAL | f8 - f11 |
... D I M E N S I O N S ... | |
WIDTH | 90 mm |
HEIGTH | 90 mm |
LENGTH | 90 mm |
WEIGHT | 740 g |