Rodenstock Rodagon-N APO 50mm f2.8 Enlarging Lens

Rodenstock Rodagon-N APO 50mm f2.8 Enlarging Lens

Item: 7004

6 element, for 35mm use

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Rodenstock know that only a first class enlarging lens guarantees developing success. Their German engineers combine the latest in computer design with superior mechanical craftsmanship. No need to look at technical curves - you can see the Rodenstock difference in every picture. They will repay you with higher resolution, colour fidelity, outstanding field flatness, contrast, and uniform illumination.

The apochromatically corrected high-performance lenses of the Apo-Rodagon series guarantees perfect results which will satisfy the highest demands.

The correction up to 6 element lenses was taken to the absolute limits and so ensures the full elimination of irritating visible colour fringes on high-contrast borders. All monochromatic imaging errors have also been greatly reduced to give this lens type its unsurpassed image reproduction performance.

The advantages are clearly visible in both colour and black and white enlargements. The Apo-Rodagon-N is therefore the amateur's and professional's first choice whenever the very highest reproduction quality is required.

The optimal working aperture is reached by stopping down by only 1 to 2 stops.


Minimum aperture: f/16
Illuminated aperture selection
Stepless aperture setting
Thread size: M39
Elements: 6
Manufacturer’s Description
Apo-Rodagon-D lenses are designed for the highest possible imaging quality for close-ups at just those scales around 1 : 1 where even the best enlarging lenses for larger scales begin to show their weak spots. Thus their typical application are transparency duplication, the preparation of internegatives and macro photography, where these lenses have an excellent performance for the recommended imaging scales. For the application on SLR cameras the Modular-Focus helical mount, available as an accessory, and a matching camera adapter are required. Furthermore, as well as for photography, they can also be used as high resolving optical systems for premium scanners.

The 6 elements, apochromatically corrected lenses feature high contrast and sharpness right up to the picture corners with virtually no color fringes. Distortion is corrected almost to zero and cannot be seen even in critical subjects with straight-lined structures parallel with the edges of the frame.

The optimum working aperture is between f/5.6 and f/8. This is worth mentioning because the effective aperture of a lens focused for a scale of about 1 : 1 is approximately two f-stops smaller than the nominal aperture. Therefore stopping down to smaller apertures than the nominal f/8 would result in visible blur because of diffraction.

All three models of the Apo-Rodagon-D are fitted with a practical click-stop aperture which can be disabled for stepless control and with pre-setting rings. These lenses are rather used for cameras and hardly for enlarging units and so there is no illumination of the f-number scale, because it only would have to be covered in order to avoid stray light.
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