120 Rollei RPX 25
Product information
120 Rollei RPX 25| Manufacturer | Rollei |
| Film | RPX 25 |
| Type | Black and White |
| ISO | 25 |
| Format | 120 Medium Format |
Rollei RPX 25 120: Optical Perfection in Medium Format
Capturing the microscopic detail of a scene demands an emulsion designed for technical purism. The Rollei RPX 25 120 is an ultra-low-sensitivity film that defies the limits of analog resolution. This film roll delivers 6×6 negatives with a virtual absence of grain and razor-sharp sharpness. It is the indispensable choice for landscape photographers working with a tripod, rigorous architecture, and the most demanding art reproductions.
What makes the Rollei RPX 25 film roll in 120 unmatched?
Its supremacy lies in its extreme slowness. Being an ISO 25 film, its emulsion requires a dense and very slow accumulation of photons. This translates into tiny, densely packed silver crystals. This photographic architecture makes it possible to capture the most subtle highlights with a beautiful native contrast. Combined with the giant size of the medium format negative, it delivers image quality that competes head-to-head with one-hundred-megapixel digital backs.
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Absolute resolution also in 35mm.
If you love the total absence of grain and the deep blacks of this purist ISO 25, get the most out of it every day. Get this same clinical film roll in standard 35mm format to give your SLR camera art-gallery quality.
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Technical Specifications and Basic Comparison
Mastering this high-precision tool requires knowing its chemistry down to the millimeter. We break down the exact technical profile of this Rollei gem.
- Format: Medium Format (120).
- Nominal sensitivity: ISO 25 / 15° (Extremely slow).
- Emulsion type: Panchromatic black and white (Ultra Fine Grain).
- Base support: Clear acetate.
- Development: Standard B/W chemistry (Optimized for high-dilution chemicals).
| Feature | Rollei RPX 25 120 | Ilford Pan F Plus 120 |
|---|---|---|
| Nominal Sensitivity | ISO 25 (Requires tripod) | ISO 50 (Slightly faster) |
| Base Contrast | Medium-High (Very balanced) | High (Very vigorous) |
| Latent Image Retention | Excellent (Months/Years) | Poor (Requires immediate development) |
Technical Variables of the Film
- Contrast and Tonal Range: Very elegant medium contrast. The shadows are astonishingly deep and transparent, while the highlights retain texture without easily "burning out" under controlled light.
- Spectral Sensitivity: Standard panchromatic. Unlike the Ortho versions, it responds excellently to the red spectrum, making it a wonderful choice for smooth-skin portraits.
- Grain Structure: Ultra-fine crystals. The grain is invisible to the naked eye in the 120 format. It provides a visual cleanliness that directly evokes modern tabular technology.
- Acutance: Superior. The definition of micro-details is astonishing, squeezing out the resolving power of professional Carl Zeiss or Mamiya Sekor lenses.
- Resolution (Resolving Power): Optimal. With 260 line pairs/mm, it supports museum-size enlargements without blinking.
- Push/Pull Flexibility: Almost none. It is a technical emulsion that demands to be shot at its native ISO 25. Pushing it will annihilate the shadows.
- Base Support and Antihalation Layer: Very docile acetate. It includes an effective antihalation layer that dissolves in the prewash, protecting the highlights.
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Why buy your Rollei RPX 25 120 at Camera Market?
We have been fixing low-sensitivity emulsions in our lab tanks for over ten years. We are a team of real, active analog professionals. We know that slow films require impeccable thermal storage so as not to lose a single bit of their ISO. We keep all our stock in stable refrigerators. We ship your medium format orders quickly within 24/48 hours with secure packaging. If you are unsure about the long exposure times required, a specialist technician will advise you by phone with no obligation.
Advantages and Disadvantages of Rollei RPX 25 in 120
| Advantages (Pros) | Disadvantages (Cons) |
|---|---|
| Absolute sharpness and absence of grain, ideal for macro and architecture. | Restrictive ISO 25 sensitivity; requires a tripod and cable releases. |
| Excellent latent image stability (it does not expire if you take time to develop). | Tight latitude; severely punishes underexposure. |
| Docile acetate base that dries perfectly flat for clean scans. | Completely useless for street photography or handheld action. |
Comparison Table: RPX 25 versus similar 120 film rolls
| Slow Medium Format Film | Sensitivity and Grain | Spectral Response |
|---|---|---|
| Rollei RPX 25 120 | ISO 25 / Invisible grain | Standard Panchromatic |
| Rollei Ortho 25 120 | ISO 25 / Invisible grain | Orthochromatic (Blind to red) |
| Ilford Pan F Plus 120 | ISO 50 / Almost invisible grain | Standard Panchromatic |
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The classic giants Top sellers in 120.
Find out which slow film rolls professional landscape photographers are loading onto their heavy tripods. Explore our section of black and white in medium format 120 to discover the purist alternatives from the lab.
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Development Times for Rollei RPX 25 120 (at 20°C)
Extracting its immense grays requires chemical exactness. We show you the verified lab times to successfully process this slow beast at home.
| Developer | Dilution | Exposed ISO | Time (Minutes) |
|---|---|---|---|
| Adox Rodinal | 1+50 | 25 | 11 min (Ideal for acutance) |
| Kodak D-76 / ID-11 | 1+1 | 25 | 8.5 min |
| Ilfotec DD-X | 1+4 | 25 | 5 min (Very fast, careful!) |
| Kodak HC-110 | Dilution B | 25 | 5 min (Very fast, careful!) |
Camera Market Pro Tip: Superiority over Pan F
Many of our customers come asking about the classic Ilford Pan F 50 for landscapes, but get frustrated because the latent image fades if they take months to develop the roll.
The photochemical reality of Rollei: This is where the Rollei RPX 25 destroys its competitor. Its halide structure is designed for exceptional long-term stability. If you go on a trip, shoot the roll and can't develop it until 6 months later, the latent image will remain intact and dense. You won't suffer the terrible regression (erasure) that Pan F experiences. This makes the RPX 25 the safest slow film on the market for long-term projects that require maximum optical resolution.
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Physical Behavior and Scanability
We address the handling of the base support, being an authentic pleasure for those who digitize at home.
Planarity (Film Curling)
Unlike Rollei's "Retro" series which uses polyester, the RPX 25 120 uses an excellent acetate base. After drying hung with weight, the large 6×6 strip stays perfectly flat and docile. Forget about transverse bowing. Loading these negatives into the negative holders of your Epson Perfection scanner is agile and safe, guaranteeing clinical corner-to-corner focus without using optical glass.
Inversion Profiles (Scanning)
Inverting the RPX 25 in Negative Lab Pro is very easy thanks to its balanced natural contrast. Apply linear or "Frontier" emulation profiles. Lacking grain, the TIFF files withstand digital sharpening masks brutally without the image filling with noise or artificial artifacts.
At the Limit: Extreme Exposure and the Zone System
Know the inflexible photochemical red lines of this slow film to protect your landscape compositions.
Reciprocity Failure
It suffers moderate-to-high light fatigue. From 1 second of exposure (frequent at ISO 25), it requires compensation. If the meter dictates 10 seconds, the emulsion will demand about 30 actual seconds of shutter speed. The use of a robust carbon tripod is non-negotiable at all times.
Extreme Push and Pull
It tolerates pushing terribly. Pushing this film to ISO 100 will melt the shadows into absolute blackness, leaving the negative hollow. Conversely, it kindly accepts pulling. Shooting it at ISO 12 and cutting its development will tame days of very strong sun, gifting you an infinite range of grays.
Dynamic Range Map
It possesses a severely asymmetric latitude. It retains bright highlights masterfully (it is almost impossible to blow out the clouds). However, it punishes any underexposure without mercy. If the dark areas do not receive enough light, the negative will be transparent (solid black in positive). Always meter by exposing in favor of the shadows you wish to save.
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Expert Technical Management Medium Format Lab.
We control the strict aqueous dilution times for you. Send us your exposed 120 roll for an immaculate artisanal processing and a TIFF scan that will unveil its brutal optical sharpness.
Request Professional 120 Development
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Camera Market Pro Tip: The Magic of Aqueous Rodinal
Frequently, we receive disappointed clients after developing their Rollei RPX 25 with energetic undiluted chemicals (HC-110 B or DD-X), complaining about absurdly short development times (5 minutes) that cause uneven development (agitation marks) on their 120 negatives.
The lab master's technique: Such slow films develop at a vertiginous speed in concentrated chemicals. To avoid patchy development and extract maximum edge acutance, the sacred formula is to use Adox Rodinal at high dilution (1+50). This aqueous mixture slows the process down to 11 minutes. It grants you an enormous margin of error, ensures perfectly uniform development across the entire 120 roll, and sharpens microscopic contours without adding a single grain to the impeccable ISO 25.
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Frequently Asked Questions about Rollei RPX 25 120 (FAQ)
What is the difference between Rollei RPX 25 and Rollei Ortho 25?
Although both share an ISO 25 and astonishing sharpness, their color response is different. The RPX 25 is panchromatic (records all colors naturally), making it ideal for landscapes and realistic portraits. The Ortho 25 is orthochromatic (insensitive to red), which darkens lips and lightens skies, offering a very marked graphic and vintage look.
Can I shoot the Rollei RPX 25 handheld without a tripod?
It is very risky. With such low sensitivity, even on sunny days, shutter speeds can be slow if you stop down the aperture to gain depth of field. Using a tripod is practically indispensable in medium format to avoid losing its microscopic resolution due to slight camera shake.
Is it the same film as the legendary Agfa APX 25?
The original Agfa APX 25 stopped being manufactured decades ago, but the Rollei RPX 25 is its spiritual heir. Manufactured under modern standards, it emulates with great success the fine grain and tonal scale that made the German film famous, being the favorite option of photographers seeking maximum definition.
How much does it cost to develop medium format at Camera Market?
We apply our standard base rate for manual black and white development in 120 format. We understand the technical precision this emulsion demands, so we use compensating developers (such as Rodinal 1+50) and rigorous thermal control. Check our website to add the digital scanning service.
Can the 120 backing paper ruin my photos?
Rollei uses a high-quality backing paper to prevent light leaks or marks. However, to prevent any ink transfer due to humidity or condensation, we recommend always storing your film rolls in cool, dry places away from direct heat sources.
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Capture absolute detail with the king of sharpness
The Rollei RPX 25 120 is the Holy Grail for analogue purists who seek to transcend the limits of optical resolution. Its superb ISO 25 and the total eradication of grain crown it as the non-negotiable ammunition for large-format landscape photographers, 6×6 format architects and the highest-quality art reproductions. Do not let visual noise cheapen the optical purity of your Carl Zeiss lenses. Add select rolls to your cart right now and take advantage of our fast, insured and climate-controlled 24/48-hour shipping. Remember that our lab masters are eager to apply the exact Rodinal dilutions that will tame the contrast of your valuable negatives.
120 Rollei RPX 25 is in <strong>perfect working condition</strong>. Each unit has been rigorously inspected by our specialized technical team, guaranteeing optimal performance.
The specific cosmetic condition (possible signs of use, superficial scratches, etc.) is detailed in the actual photos of the product and in the full description.
The purchase includes the 120 Rollei RPX 25 and a <strong>warranty</strong> against manufacturing defects. As this is a second-hand product, accessories (caps, lens hood, case…) <strong>vary by unit</strong>.
Want to know exactly what this specific unit includes before buying? <strong>Message us via the website chat</strong> and we'll confirm right away.
All our products include a <strong>warranty</strong> covering any manufacturing defect or technical failure.
<strong>You can extend the warranty of your item:</strong>
- <strong>12 months</strong> of full coverage for only <strong>{price_12}</strong> (one-time payment)
- <strong>24 months</strong> of maximum peace of mind for <strong>{price_24}</strong> (one-time payment) — <em>recommended</em>
We also offer <strong>14-day no-questions-asked returns</strong>. If you're not completely satisfied, you can return it for a full refund.
At Camera Market, most of our items are imported from Europe, so orders can take up to <strong>14 calendar days</strong> to arrive at your address.
However, we offer expedited delivery of <strong>4 to 5 business days</strong> for selected products with immediate availability. All shipments include a <strong>tracking number</strong> so you can track your order in real time.
Comprar the 120 Rollei RPX 25 reacondicionado y certificado en Camera Market te ofrece <strong>múltiples ventajas</strong>:
- <strong>Significant savings:</strong> Prices up to 40-60% lower than new, without compromising quality or performance
- <strong>Guaranteed quality:</strong> Each product is inspected, tested and verified by specialized technicians
- <strong>Warranty included:</strong> standard coverage, extendable with the optional extension
- <strong>Sustainable purchase:</strong> You contribute to the circular economy and reduce the environmental impact of electronics
- <strong>Accessible professional equipment:</strong> Get high-end models at more competitive prices
Our refurbished photography equipment maintains the same optical and technical performance as new. Depreciation does not affect image quality or performance, only the price.
