Adox CMS 20 II Pro - 35mm Film

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Adox CMS 20 is one of the sharpest black-and-white 35mm films in existence, the fine grain and low light sensitivity means that prints can typically be enlarged to over 2.5m diagonally without loss of resolution or detail!

ISO 12 (up to 20 depending on development process) means you will need lots of light or a steady hand/tripod - but you will be well rewarded with a super-premium look



Format: 35mm
Colour: B&W
Type: Negative
ISO: 12
Exposures: 36
Pack size: 1


To understand more about the details above you can check out our film guide or if you want some inspiration then head over to our page on choosing your next film. And if you want the full details about the film, including technical information, read about Adox CMS over on EMULSIVE.


Adox is one of the oldest photographic brands in the world, established in Germany in 1860 by Dr. Carl Schleussner - who worked on early wet-collodion plates and X-ray plates. The company started marketing their own cameras in the early 20th Century, and introduced a line of B&W films in 1952 that became renowned for their sharpness of resolution. A difficult end to the last century saw the brand change hands multiple times - and now Adox films are produced by Fotoimpex across manufacturing plants in Germany and Switzerland. Their products remain very high quality with a focus on emulsions that resolve incredible levels of detail and contrast.

For more information about the brand check out our bio of Adox

All sample photos (c) Dennis Skley


Where we ship

When you buy your camera film from us we can ship it across the UK, Europe, USA, New Zealand, Australia and Canada (more countries planned soon!) So buy your Adox CMS Film 35mm B&W ISO 12 today and dive back into the fun of 35mm film photography!

The Analogue WonderLab

When you’ve shot your roll of film and are looking to get it developed and scanned, then look no further than the Analogue WonderLab!

We can process your film for you, scan it at the resolution you need, and email back the files quickly and securely.

We offer FREE tracked shipping to our lab so that you can send us your negatives with total peace of mind. And our lab team are all passionate film shooters themselves, so you know that your film will get the best possible treatment!

Head to the WonderLab page here to read more details, or add the bundled developing above (if available) when you purchase your film.

Please note that our long-term aim is to offer developing for every film that we sell, but this is a work-in-progress. For full details and FAQs please head here

We send all parcels via TRACKED service - free in the UK for orders of film over £50.

This means that when you buy your film from us you will be emailed a tracking link at dispatch, and will be able to follow your parcel’s journey all the way to safe arrival.

Please note that it is not a signed service so you won’t need to be at home to receive your film, and our letterbox-friendly boxes fit through the vast majority of European letterboxes!

You will have different shipping options and costs at checkout, depending on how quickly you need your film. Please refer to the Delivery Details page for full information

Get Inspired

Visit our Wall of Inspiration to read different film reviews and see images from our talented Analogue Wonderland community.

Take a look

Customer Reviews

Based on 11 reviews
guy butterworth
Perfect for: Great All-Rounder, Landscapes, Street Photography, Architecture
Sharing with the Film Community: Yes
yes do it

dont watch Paul's review or read any notes. so developed this is a very weak rodinal mix ( 1-100) i think or similar ... lets just say, you need to invent a new term for how much contrast this produces :D ... i also shot it at asa20 on a sunny day :D .. i think i had to scan it in at least 2 if not 3 stops lighter . and then do some lightroom and photoshoping dummery to get it to this point ... fyi i dont really care about digi scans i just use it to proof what i want to darkroom print .. i am all about the old school... shoot to print .. or shoot because i want to make a print .... :D .. dealth before digitall .. O it was also shot on a hassie 500cm using the 35mm roll hack so its a 2-1 panno 56mm*24 and the scan was around 130mb ... yupi cranked that puppy up to the red line ..

will use this by the bucket load once the wonderlanders get it in ... very impressed with it , think it has vast potential especially on the hassie and developed using the adox chems and scanned in on a nikon cool scan , think it will be cutting your eye balls through the screen... :D or more importantly darkroom printed !!!!

Peter Angus
Perfect for: Landscapes, Street Photography, Architecture, Creative/Abstract, Studio work
Sharing with the Film Community: Yes
Accreditation Handles: @Peter_Angus_Photography
Amazing detail, resolution and contrast

To get the best from this film does require more effort than a regular film such as the ever popular HP5 but those who venture into the world of CMS 20 will be rewarded with detail, sharpness and contrast like few other films.

On the downsides is the need for a special developer, Adotech IV, and one bottle is only good for 6 rolls! Other developers can be used but at the expense of tonality, expect black and white but not much between! Also the dynamic range is limited, in the range of 6 stops. So very high dynamic scenes are not suitable unless you intend to use this creatively such as for silhouettes. Those used to shooting slide film should have no problem with this.

So why bother? If you like punchy, attention grabbing images with biting sharpness and clarity then you are in the right place. On 35mm my 30 megapixel scanner can get no where near to resolving the detail available. Want 20 by 30 inch prints with no grain? For the right subject this film just makes sense. Detailed architecture or any subject with great texture. Probably not one for portraits unless of a characterful face long lived

Perfect for: Portraits, Landscapes, Architecture, Creative/Abstract
Sharing with the Film Community: Yes
Accreditation Handles:
Stunning contrast

I'm a bit of a fan of Adox films in general, but this one really blew me away.

OK, it's a low ISO film which is very contrasty. So you need to be very particular in how you meter. I shot it in my Olympus OM10 which only goes down to 25iso, but the lighting conditions meant I should have been metering at 12iso. So that meant every shot had to be manual - not a big issue, but if you don't like shooting manual then keep that in mind. Because you will want to take a couple of readings of your subject.

But if you get all that right then it is a stunning film. Loads of lovely contrast but not harshly so. There are excellent gradients between the tones and bags of detail.

Now, if only they did it in 120.......!!!!!!

Perfect for: Landscapes, Architecture, Creative/Abstract, Studio work
Sharing with the Film Community: Yes
Accreditation Handles: @eo_pho on instagram
Eerily grainless, spookily high contrast

This film is about as totally opposite to an all-rounder as you can get... though it is something truly different for the adventurous among you. The name of the game here is contrast control, i'd advise shooting at ISO 12 unless you really want that contrast to dominate the image.

My sample shot was taken on an overcast day (low-contrast) at ISO 20 and developed in half-strength caffenol-CL for double the usual time (that you would use for full-strength) to try and control the contrast. The recommended developer may be better but is expensive and has a short shelf life, so I would only purchase that if you were planning to shoot this a lot in a short period, which for the type of film this is... I don't see anyone doing with any regularity outside of one project perhaps.

As I alluded to in the title, the results will haunt your dreams of past films shot with it's near total lack of visible grain and incredibly fine detail and acutance.

Adam Goodwin
Perfect for: Beginners, Landscapes, Travel
Sharing with the Film Community: Yes
Accreditation Handles: Insta - @adamgoodwindesign

Very nice film with a great tonal range. Perfect for landscapes - making sure you're shooting in the right conditions!
I shot the film on a overcast day, in most shots the ground looks great but the sky is a bit over exposed. Great beginner film though, perfect for helping learn cameras settings and location conditions.