Kodachrome 25 - Expired

I received a few rolls of expired 35mm film cartridges in a box from a stranger in Lewes, Delaware. In the box were a few 35mm cartridges of Kodachrome 25 that had expired in 1988.

Kodak Kodachrome 25 was a popular 35mm colour reversal film produced by Kodak from 1935 until it was discontinued in 2009. Dwayne's Photo processed the last roll of Kodachrome film in Parsons, Kansas, on December 30, 2010. They officially closed their doors in December 2011, marking the end of an era for this iconic film stock. Despite the discontinuation of Kodachrome film, its legacy inspires photographers and fans worldwide. Its iconic look continues to be sought after by those who appreciate its unique colour palette and nostalgic feel. The last roll of Kodachrome manufactured was given to renowned National Geographic photojournalist Steve McCurry.

Kodachrome is so iconic, so famous, that Hollywood made a fictionalised movie about the last roll of Kodachrome.

Heck, Paul Simon wrote a song about Kodachrome. Kodachrome is the most famous film product ever.

Kodachrome
They give us those nice bright colors
They give us the greens of summers
Makes you think all the world’s
A sunny day, oh yeah

I got a Nikon camera
I love to take a photograph
So mama don't take my Kodachrome away

I received a few rolls of expired 35mm film cartridges in a box from a family friend in Lewes, Delaware. In the box were several 35mm cartridges of Kodachrome 25 that had expired in 1988. Coincidentally in 1989 I exposed a single roll of Kodachrome 64, the only Kodachrome film roll I have ever used. At least, it's the only Kodachrome slides I found in a box of my old images.

When exposed, an expired roll of Kodachrome 25 film will have decreased sensitivity to light, often resulting in underexposure when exposed at native ISO. The film's colour dyes will have also degraded over time, leading to colour balance and saturation shifts. Exposing an expired roll of 35mm film will result in unpredictable results, as the film's sensitivity to light will have degraded over time. Expired film will be more prone to graininess and other anomalies. I read on the Internet that to ensure the best possible outcome, it is recommended to overexpose the film by 1 to 2 stops to compensate for its decreased sensitivity.

Despite these potential challenges, I wanted to expose the expired Kodachrome 25 film cartridge. Perhaps I would enjoy whatever result I would get. I set realistic expectations and was open to the possibility of unexpected results.

Kodachrome was known for its vibrant, saturated colours and fine-grain structure. Kodachrome 25 had an ISO rating of 25, making it well-suited for bright, outdoor shooting conditions. I waited for a sunny summer day to ensure I had opportunities to test the film in various lighting and see how it performed. I grabbed my camera, set the ISO to ASA 12, inserted a roll of Kodachrome 25, grabbed my tripod and drove to Princeton University. I did my best to take notes, but I expected the worst. I exposed most of the frames during a visit to my favourite tavern.

Since Kodachrome can no longer be developed as a colour reversal film, I searched the Internet for answers about what to do with my exposed roll of film. I stumbled upon a few references to developing the film as black and white. My internet search suggested that the most recommended place to process my expired roll of Kodakcgrome 25 in black and white seemed to be Film Rescue International. I also found out about Kelly-Shane Fuller, who had found a way to develop Kodachrome into a colour negative. His work has been featured in galleries and exhibitions, and he won numerous awards for his photography. He has created a process to develop Kodachrome into a colour negative. I also contacted Boutique Film Lab, the lab I have used for almost all my film development over the last few years. Boutique Film Lab confirmed they could develop Kodachrome 25 as a black-and-white film.

I rolled the dice and developed my film with Boutique Film Lab. When I sent the roll to Boutique Film Lab, I accepted that I might be wasting money.

I should have exposed the Kodachrome 25 cartridge at ISO 6; ISO 12 was insufficient. The film was so severely underexposed that the Epson Perfection V600 struggled to find the frame border during the scan preview. I manually adjusted the scanner for each frame. After scanning, I followed my usual 35mm scan workflow, importing and running the scans through Negative Lab Pro. I knew I had failed as the images appeared on my Mac Studio Display.

The frames were very dark and underexposed. I did my best to fix things in Adobe Lightroom, but the best I could do was make the image recognisable.

I don't fault Boutique Film Lab. Either the film was unusable, or I needed to expose it properly. I have about five more rolls of Kodachrome 25. I need to find out how the cartridges were stored. I am to use the remaining cartridges.

Name Kodachrome 25
Format 35mm
Film Code Number 5073
Film Code Name KM
Process K-14
Native ISO ASA 25
Features saturated colours and fine-grain structure
Price FREE
Lab Boutique Film Lab
Exposed ISO ASA 12
Lab Process Black and White
Scanner Epson Perfection V600
Software VueScan 9, Negative Lab Pro, Adobe Lightroom
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12
Sunday 29 January 2023 · Minolta XD-11 · MD Rokkor-X 45mm F2 · ISO 12

Kodak Professional Portra 400BW - Expired

On a recent walk around Princeton University, I exposed an expired Kodak Portra 400 BW 35mm film cartridge.

Kodak Professional Portra 400BW was a multi-purpose chromogenic black and white negative film designed to be processed in standard C-41 chemistry alongside rolls of colour  negative film and printed on standard colour paper. It was developed like a colour-negative film in the C-41 process and delivered monochrome images like a black-and-white film. The film was intended for exposure with daylight, electronic flash, and artificial illumination.

Kodak Professional Portra 400BWW was a versatile film for 35mm and medium format cameras. It was made with a Kodak T-Grain emulsion and had a wide exposure latitude. Production of the Kodak Portra 400BW was discontinued and replaced with Kodak Professional BW400CN, which was also discontinued. This film incorporated Kodak T-GRAIN® emulsions, which provided excellent grain and sharpness at a relatively high speed. This film was used for portrait and wedding applications and many commercial applications.

I awoke on Monday morning feeling out of sorts. Not physically but emotionally. I was conflicted about a difficult decision I had to make. I needed to clear my head. It was Presidents Day's federal banking holiday, so I had the day off. After breakfast, I grabbed my Minolta X-700, MD W.Rokkor-X 28mm F2.8 lens and loaded an expired roll of Kodak Professional Portra 400BWW from the box of expired 35mm film that my friend had sent me. I mounted the setup to my Manfrotto tripod. It was an overcast morning, and I wanted to ensure I could expose frames at a lower shutter speed if needed. I tried to avoid motion blur.

As I walked around the Princeton University campus, I became more relaxed. The air was cool, but I was comfortable. It was still early, and the campus was coming alive. I focused on bicycles. They are easy to find on campus. I walked west of Olden Street near the School of Engineering and Applied Science on Shapiro Walk. Shapiro Walk took me to the Fountain of Freedom.

I exposed several frames to photograph the Princeton School of Public and International Affairs, formerly the Woodrow Wilson School of Public and International Affairs. Foreign Policy magazine ranks the Princeton School second in the world for international relations at the undergraduate level behind Harvard University and fourth at the graduate level, behind the Walsh School of Foreign Service at Georgetown University, Harvard Kennedy School at Harvard University, and Johns Hopkins University.

I exposed this 35mm roll of Kodak Portra 400BW at box speed. The scans exhibit a lot of chunky film grain. I think this is because I did not expose the film correctly. I had not yet learned about the "overexpose by one stop for each decade the film has expired" rule. I should have exposed the film at ISO 50, thereby overexposing each frame to adjust for the age of the film.

The film cartridge was developed at Boutique Photo Lab and scanned on my Epson Perfection V600 with VueScan 9. I made some minor cropping and perspective adjustments in Adobe Lightroom.

Name Kodak Professional Portra 400BW
Format 35mm
Features chromogenic black and white negative
Native ISO 400
Price FREE
Exposed ISO 400
Lab Boutique Film Lab
Process C41
Scanner Epson Perfection V600
Software VueScan 9, Negative Lab Pro, Adobe Lightroom
Garfield Way · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Princeton University · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Belle Mara · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Belle Mara · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400
Belle Mara · Monday 20 February 2023 · Minolta X-700 · MD W.Rokkor-X 28mm F2.8 · ISO 400

What ISO setting for expired 35mm film?

After I exposed my first roll of expired 35mm film, I learned that expired film should be overexposed by one step for each decade since the film expired. Good advice.

Last summer, a box filled with rolls of expired 35mm film arrived unexpectedly at my doorstep. Months earlier, I had contacted a college friend about the camera equipment she used at my wedding. Bhavna and I didn't have money for a photographer, and our friend Traci stepped in and offered her skills. I told her I was reshooting the film, and she mentioned that her mom had some expired rolls of 35mm film that she would send me.

Even though they were expired, I was delighted and couldn't wait to see what I could do with them. I catalogued each film stock, recording the type and the quantity. I have already used some of the expired film stock with varying results. After I exposed my first roll I learned that expired film should be overexposed by one step for each decade since the film expired. I updated the table in the original post to include a column for what ASA could be used for the expired film.

I am only guessing at the expiration dates using the year the film stock was discontinued as a guide.

Brand Film Stock Quantity ASA ASA (Expired)
Agfa Scala 200 1 200 50
Fujifilm Fujichrome Provia 400F 6 400 100
Fujifilm Fujicolor 200 4 200 200
Fujifilm Fujicolor Super HG 1 1600 200
Fujifilm Fujicolor Super HQ 4 200 25
Fujifilm Velvia 100F 6 100 100
Ilford HP5 2 400 50
Kodak 400 UC 1 400 50
Kodak BW400CN 2 400 200
Kodak Ektachrome E100G 1 100 50
Kodak Ektachrome E100VS 1 100 50
Kodak Ektachrome Infrared E1R 1 -
Kodak Ektar 100 1 100 100
Kodak Kodachrome 25 8 25 1
Kodak Kodak 200 7 200 200
Kodak Max 800 8 800 200
Kodak Tri-X Pan 400 4 400 125
Kodak Portra 400BW 3 400 100