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HR Digaron W 32mm f/4 – nuevo!

 

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Super WA lens for the largest sensor and stitch formats

Our lens series Rodenstock HR Digaron-W with an amazing resolution of 80 lp/mm and image circle diameters of at least 90 mm has been designed for the largest sensor formats up to 36x56 mm and 40x54 mm as well as for even larger stitch formats up to 49x71 mm. Now we introduce a new excellent super wide-angle lens HR Digaron-W 32 mm f/4 with an equivalent (35 mm full-format) focal length of 20.6 mm when used with a 40x54 mm sensor or of 16,5 mm when used for stitching to a format of 49x71 mm. Despite its very short focal length, it provides the same large image circle of 90 mm like the other HR Digaron-W wide-angle lenses, and it allows the same wide shift-and-tilt movements for perspective control and extended depth of field. Now, the Rodenstock lens series HR Digaron-W for large sensor formats up to 40x54 mm and stitch formats up to 49x71 mm comprises five focal lengths of 32 mm, 40 mm, 50 mm, 70 mm and 90 mm.

 

Download information –

HR Digaron W 32mm –

HR_Dig-W_32.pdf /

1.7 MB / english

 

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HR Digaron S –

 

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The lens series HR Digaron-S includes six high-performance lenses optimized for digital photography and provides with a focal length range from 23 mm to 180 mm and an image circle diameter of 70 mm* (80 mm for the 180 mm lens). These lenses are far beyond common quality standards and come very close to the theoretical ideal of diffraction limited image sharpness – even for open aperture. In order to stop down the HR-lens as little as possible (to avoid diffraction blur!), the increase in depth of field by lens swing and tilt should be used for taking images of subjects of a large depth with an adjustable technical camera.

 

HR Digaron-S	Max. recommended format
23 mm f/5.6	33×44 mm (37×49 mm *)
28 mm f/4.5	33×44 mm (37×49 mm *)
35 mm f/4	33×44 mm (37×49 mm *)
60 mm f/4	33×44 mm (37×49 mm *)
100 mm f/4	33×44 mm (37×49 mm *)
180 mm f/5.6	37×49 mm

* Reduced movements available with this larger sensor format

 

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HR Digaron W –

 

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The pixel size of the sensors of digital camera backs cannot be reduced just as one likes for achieving higher resolution without a significant increase of image noise and a reduction of exposure latitude. This is the reason why larger sensors with a resolution up to about 60 megapixels have been developed for professional digital backs. However, digital lenses with image circle diameters of about 70 mm designed for smaller sensors do not allow sufficient or even any camera movements. This is why the new Rodenstock lens series HR Digaron-W with larger image circles from 90 mm on and with an extremely high resolution very close to the physical limit of diffraction has been developed. This new lens series comprises the focal lengths of 40 mm, 50 mm, 70 mm and 90 mm. The last mentioned two lenses are the renamed former Apo-Sironar digital 70 mm f/5.6 and Apo-Sironar digital 90 mm f/5.6 which both had already been calculated according to the much higher demands on freedom from aberrations for higher resolution with larger working apertures (reduced stopping down).

 

HR Digaron-W	Max. recommended format
40 mm f/4	40×54 mm
50 mm f/4	40×54 mm
70 mm f/5.6	40×54 mm
90 mm f/5.6	72×96 mm

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Apo-Sironar digital / Apo-Macro-Sironar digital –

 

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This lens series provides even larger image circles increasing with the focal lengths. From a 105 mm image circle for 35 mm focal length, 125 mm for 45mm and 105 mm focal length and 150 mm for 135 mm to 180 mm focal length. These lenses provide large image circles for use with digital scan backs as well as with chip backs having larger area sensors or being used in the macro-scan mode for larger formats by stitching multiple shots made with laterally shifted back from one shot to the next. Of course also ultimate quality analog images are possible when applying roll film backs. Therefore these lenses are the first choice for photographers who use both analog and digital photography. Focal lengths from 35 mm mean that real wide-angle shots are possible, even with the smaller area sensor sizes, while still allowing large movements. For filling the gap between 55 mm and 105 mm we offer the HR Digaron-W lenses 70 mm and 90 mm with an image circle of 100 mm and 125 mm respectively.

 

 

Apo-Sironar digital	Max. recommended format
35 mm f/4.5	46×58 mm
45 mm f/4.5	72×96 mm
55 mm f/4.5	72×96 mm
105 mm f/5.6	72×96 mm
135 mm f/5.6	72×96 mm
150 mm f/5.6	72×96 mm
180 mm f/5.6	72×96 mm
Apo-Macro-Sironar digital	Max. recommended format
120 mm f/5.6	72×96 mm

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Accessories: Center filters –

 

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For critical shots (e.g. with motifs of uniform brightness) taken with lenses with an extremely large image angle, both in analog and in digital photography, the physically inevitable light fall-off can be an irritating element. With a specific software like Photoshop® digital shots can be brightened up, but only up to a certain level. At the margin or corners already existing dark objects may lose sharpness and depth (because of black becoming dark gray) and it can lead to visible image noise. The Rodenstock center filters largely eliminate light fall-off and therefore should be always used if the image circle of wide-angle lenses (HR Digaron-S 23 mm and 28 mm) is used right up to the vicinity of the circumference. The Rodenstock center filters designed especially for these lenses will be available soon.

 

HR Digaron-S	Filter thread *	Exp. correction f-stop / time
23 mm f/5.6	E 72/86	in preparation
28 mm f/4.5	E 72/86	in preparation

 

* The first number is the diameter of the rear male thread for
fixing at the lens, the second number is the diameter of the
front female thread for adding another filter or a lens hood.

 

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Accessories: Focus-Mount –

 

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Using digital lenses on cameras without bellows such as panoramic or shift cameras requires the use of a focusing facility. For this purpose we developed the Focus-Mount that can be combined with all Rodenstock lenses in shutter size 0. Existing lenses can be installed at a later date.

 

The Focus-Mount ensures precise focusing and the non-rotating lens mount means that all operating elements and scales of the shutter remain in the same position. The lenses which can be used with the Focus-Mount as well as their focusing ranges can be found in the table. The distance scale of the Focus-Mount (in meter and feet) is adapted to the focal length of each lens.

 

Digital Lens		Focusing range
HR Digaron-S	23 mm f/5.6	∞ – 0.25 m
	28 mm f/4.5	∞ – 0.3 m
	35 mm f/4	∞ – 0.4 m
	60 mm f/4	∞ – 0.7 m
	100 mm f/4	∞ – 1.8 m
	180 mm f/5.6	∞ – 4.0 m
HR Digaron-W	40 mm f/4	∞ – 0.5 m
	70 mm f/5.6	∞ – 0.8 m
	90 mm f/5.6	∞ – 1.3 m
Apo-Sironar digital	35 mm f/4.5	∞ – 0.4 m
	45 mm f/4.5	∞ – 0.6 m
	55 mm f/4.5	∞ – 0.9 m
	105 mm f/5.6	∞ – 1.8 m
	135 mm f/5.6	∞ – 3.0 m
	150 mm f/5.6	∞ – 3.5 m

 

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