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.
🔍 Key Specifications:
📐 Optical Design:
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Focal Length: 150mm
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Maximum Aperture: f/5.6
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Minimum Aperture: f/22 (typically)
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Optical Construction: 6 elements / 4 groups – symmetrical Plasmat-type design
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Coverage: Approx. 80mm image circle – ideal for 4×5″ (80mm diagonal) and medium format (6×9cm, 6×7cm)
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Aperture Control: Preset iris with click stops – smooth, precise operation
🔧 Mount & Physical:
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Mount Thread: 39mm Leica (M39) enlarger thread – industry standard
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Filter Thread: 40.5mm (typical – verify)
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Iris Blades: 12 blades (typically) – produces smooth, circular out-of-focus highlights
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Finish: Professional black anodized barrel with luminous aperture markings
⚙️ Why This Lens is Exceptional:
🎯 Rodagon Series – The Benchmark:
Rodenstock’s Rodagon series is universally recognized as the reference standard for professional enlarging lenses:
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Diffraction-limited performance at working apertures (f/8–f/11)
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Superb correction of chromatic aberration, coma, and distortion
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High contrast across the entire image field
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Color-neutral – ideal for color printing
📏 150mm Focal Length – Optimized for Medium/Large Format:
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Perfect for 4×5″ enlarging – covers full negative with room for movements
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Ideal for 6×9cm and 6×7cm – generous coverage allows shift/rise in camera
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Useful for 35mm – allows significant enlargement without corner degradation
💎 6-Element Symmetrical Design:
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Symmetrical Plasmat configuration minimizes distortion and field curvature
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Equal performance at 1:1 (same-size reproduction) – excellent for copy work
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Exceptional sharpness from center to edges
🛠️ Applications & Uses:
🖼️ Fine Art Darkroom Printing:
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Black & white printing – maximize sharpness and tonality
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Color printing – neutral color rendition, accurate filtration
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Large format enlargers – Omega, Beseler, Durst, LPL
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Mural printing – sharp, detailed enlargements up to 30×40″
🔄 Copy & Reproduction Work:
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1:1 copy lens – excellent for digitizing 4×5″ transparencies
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Slide duplicator – sharp, color-accurate duplicates
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Document reproduction – flat-field performance ideal for copy stands
🔬 Alternative / Experimental Photography:
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Large format camera lens – mount on view camera for tabletop photography
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Projection lens – high-quality image projection
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DIY enlarger projects – build custom enlarger for alternative processes
📷 Digital Scanning:
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Film scanning lens – excellent for high-resolution drum scanner replacements
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Camera scanning – use with mirrorless camera for digitizing negatives







