Rodenstock Grandagon-N 90mm f/ 6.8 large format photo lens

Rodenstock Grandagon-N 90mm f/6.8

The Grandagon-N is available in two versions, and it was always widely used by many photographers for architectural, panoramic and landscape photography. The eight element lenses offer not only a large maximum aperture, but also an image angle of 105°, an even more uniform illumination and distortion values of less than 1 %. The six element lens (90 mm f/6.8) is the cost-effective alternative that also impresses by its compactness which even allows the insertion into the Focus-Mount helical focuser for the use with bellowsless panoramic or shift cameras.

The use of the almost neutral gray Rodenstock center filters is recommended for critical motifs to make best use of the image circle without irritating light fall-off to the image corners. Rodenstock center filters are concentric graduated neutral gray filters whose density decreases from the center up to the transparent rim. The fall in density compensates for practically all the light fall-off to the image edge from a working f-stop of 16. The exposure must be corrected by 1.5 or 2.5 stops. This corresponds to a correction of the exposure time by a factor of 3 or 5 respectively (either aperture or exposure time have to be corrected, not both at the same time).

The lens shown on pictures was manufactured between 1987 to 1989. 
Find on this page the manufacture date of your Rodenstock lens

Rodenstock Grandagon-N lenses specs

GRANDAGON-N65mm f/4.575mm f/4.590mm f/4.5
Lens construction8 elements in 4 groups8 elements in 4 groups8 elements in 4 groups
Max. aperturef/ 4.5f/ 4.5f/ 4.5
Angle of view105º105º105º
Image circle170mm (f/ 16 – f/ 22)195mm (f/ 16 -f/ 22)236mm (f/ 16 – f/ 22)
Max. film size4 × 5″4 × 5″5 × 7″
Shutter sizeCopal 0Copal 0Copal 1
Shutter speeds1 to 1/500, T, B1 to 1/500, T, B1 to 1/400, T, B
Front filter size58mm67mm82mm
Center filterE 58/77E 67/68E 88/112
Exposure correction+1.5 f-stops+1.5 f-stops+1.5 f-stops
GRANDAGON-N90mm f/6.8
Lens construction6 elements in 4 groups
Max. aperturef/ 6.8
Angle of view102º
Image circle221mm (f/ 22 – f/ 32)
Max. film size4 × 5″
Shutter sizeCopal 0
Shutter speeds1 to 1/500, T, B
Front filter size67mm
Center filterE 67/86
Exposure correction+1.5 f-stops
Rodenstock Grandagon-N 90mm f/ 6.8 large format photo lens
Rodenstock Grandagon-N 90mm f/6.8 lens
Rodenstock Grandagon-N 90mm f/ 6.8 large format photo lens
Rodenstock Grandagon-N 90mm f/6.8 lens
Rodenstock Grandagon-N 90mm f/ 6.8 large format photo lens
Rodenstock Grandagon-N 90mm f/6.8 lens
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