Rodenstock Rodagon 150mm f/5.6 enlarging lens

Product Description

Rodenstock Rodagon 1:5.6 f=150mm – Professional Enlarging Lens

A legendary professional-grade enlarging lens from Rodenstock’s highly respected Rodagon series. The 150mm f/5.6 Rodagon is a 6-element, 4-group symmetrical design optimized for medium and large format enlarging (up to 4×5″). Renowned for exceptional sharpness, contrast, and color fidelity, this lens represents the gold standard in darkroom optics and remains highly sought after by fine art printers and analog photography enthusiasts.

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🔍 Key Specifications:

📐 Optical Design:

• Focal Length: 150mm

• Maximum Aperture: f/5.6

• Minimum Aperture: f/22 (typically)

• Optical Construction: 6 elements / 4 groups – symmetrical Plasmat-type design

• Coverage: Approx. 80mm image circle – ideal for 4×5″ (80mm diagonal) and medium format (6×9cm, 6×7cm)

• Aperture Control: Preset iris with click stops – smooth, precise operation

🔧 Mount & Physical:

• Mount Thread: 39mm Leica (M39) enlarger thread – industry standard

• Filter Thread: 40.5mm (typical – verify)

• Iris Blades: 12 blades (typically) – produces smooth, circular out-of-focus highlights

• Finish: Professional black anodized barrel with luminous aperture markings

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⚙️ Why This Lens is Exceptional:

🎯 Rodagon Series – The Benchmark:
Rodenstock’s Rodagon series is universally recognized as the reference standard for professional enlarging lenses:

• Diffraction-limited performance at working apertures (f/8–f/11)

• Superb correction of chromatic aberration, coma, and distortion

• High contrast across the entire image field

• Color-neutral – ideal for color printing

📏 150mm Focal Length – Optimized for Medium/Large Format:

• Perfect for 4×5″ enlarging – covers full negative with room for movements

• Ideal for 6×9cm and 6×7cm – generous coverage allows shift/rise in camera

• Useful for 35mm – allows significant enlargement without corner degradation

💎 6-Element Symmetrical Design:

• Symmetrical Plasmat configuration minimizes distortion and field curvature

• Equal performance at 1:1 (same-size reproduction) – excellent for copy work

• Exceptional sharpness from center to edges

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🛠️ Applications & Uses:

🖼️ Fine Art Darkroom Printing:

• Black & white printing – maximize sharpness and tonality

• Color printing – neutral color rendition, accurate filtration

• Large format enlargers – Omega, Beseler, Durst, LPL

• Mural printing – sharp, detailed enlargements up to 30×40″

🔄 Copy & Reproduction Work:

• 1:1 copy lens – excellent for digitizing 4×5″ transparencies

• Slide duplicator – sharp, color-accurate duplicates

• Document reproduction – flat-field performance ideal for copy stands

🔬 Alternative / Experimental Photography:

• Large format camera lens – mount on view camera for tabletop photography

• Projection lens – high-quality image projection

• DIY enlarger projects – build custom enlarger for alternative processes

📷 Digital Scanning:

• Film scanning lens – excellent for high-resolution drum scanner replacements

• Camera scanning – use with mirrorless camera for digitizing negatives