Olympus Pen E-P1 disassembly, and full spectrum modification
2025-Jan-08, Wednesday 12:00 amThe Olympus Pen E-P1 is 16 years old this year. So is my personal one. A first gen micro-four-thirds camera, it's specs don't compete nowadays, but I've always loved holding and using this camera. There is something really satisfying about it. Especially paired with a pancake lens. When I upgraded to a newer, fancier camera, I just couldn't part with the E-P1. I've had the vague intention of converting it to become a full-spectrum camera for almost as long as I've had it. Ever since reading about how that is a thing that actually exists, and that it's an easier process with the mirrorless cameras, because you don't need to recalibrate the focus afterwards. Guess what. I've finally gotten around to doing it.
Firstly, what is a full spectrum camera? Basically, digital cameras are sensitive to more wavelengths on the electromagnetic spectrum than human eyes are. This makes their images look wrong, so the manufacturers put a filter (the hot mirror) in the cameras to remove the unwanted ultraviolet and infrared 'noise'. (Early mobile phone cameras didn't have this, back when you could use them to see if the LED on your remote controls lit up when you pressed a button.) But you can get some very interesting photos without this limitation.
And it seems a lot of people agree with me, because multiple businesses have started up to provide these conversions, and filters. Which makes things a whole lot easier for me. Now I can just buy the correct specific replacement glass for my camera from places like;
Kolari internal filters for DIY
Life Pixel internal filters for DIY
There is however a bit of a problem with the age of my camera. It has fallen out of the memory of the internet. I can no longer find the guides I had seen before. I did find Life Pixels E-P3 conversion tutorial, but the E-P3 is not exactly the same as the E-P1. I dug through some old forum links, and found Digital-Photography.pls E-P1/E-P2 conversion on The Way Back Machine. It has some good pointers, and high resolution images, but also a lot of 'like usual', 'like last time', and 'check my previous tutorials' (which also don't explain). Nonetheless, armed with both tutorials, I dived in, figured it out, and recorded the whole thing. What follows are (found footage) stills of my adventure. To make it easier for whomever follows. At their own peril.
- Phillips head screwdriver, mine was size 1.4x40mm,
- Thin tweezers,
- Air blower,
- Soldering iron,
- Anti-static and safety precautions.
If changing the hot mirror, you'll need;
- the replacement glass,
- glass cleaning cloth.
Remove the lens, battery, sd card, and hot shoe protector.
( Details )
( Details )
( Details )
Do everything in reverse.
If everything goes well the camera will look just like it did before. Except for when you look at the hot mirror without a lens in place. With the original hot mirror you see the light filtering appearing as colour, typically red. With the clear glass that colour is gone.
( Before and After )
Many hours after removing that first screw I was relieved to have my camera still working, and displaying very interesting colours. Green plants are orange. A sunny day is light orange. An overcast sky is reddish-orange. A snow filled sky is very pink. The evening sky is much brighter. And that's just with natural light. Candles burn purple-red. Does it really matter if I have two washers/spacers left over and no idea where they came from? *cough*
The next step for me is to get some external filters to see what else the world holds for my camera. And possibly some external (safe) UV/IR light sources, for more forensic explorations.
Front photo of an Olympus Pen E-P1
Photo by ![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
chebe
Firstly, what is a full spectrum camera? Basically, digital cameras are sensitive to more wavelengths on the electromagnetic spectrum than human eyes are. This makes their images look wrong, so the manufacturers put a filter (the hot mirror) in the cameras to remove the unwanted ultraviolet and infrared 'noise'. (Early mobile phone cameras didn't have this, back when you could use them to see if the LED on your remote controls lit up when you pressed a button.) But you can get some very interesting photos without this limitation.
And it seems a lot of people agree with me, because multiple businesses have started up to provide these conversions, and filters. Which makes things a whole lot easier for me. Now I can just buy the correct specific replacement glass for my camera from places like;
Kolari internal filters for DIY
Life Pixel internal filters for DIY
There is however a bit of a problem with the age of my camera. It has fallen out of the memory of the internet. I can no longer find the guides I had seen before. I did find Life Pixels E-P3 conversion tutorial, but the E-P3 is not exactly the same as the E-P1. I dug through some old forum links, and found Digital-Photography.pls E-P1/E-P2 conversion on The Way Back Machine. It has some good pointers, and high resolution images, but also a lot of 'like usual', 'like last time', and 'check my previous tutorials' (which also don't explain). Nonetheless, armed with both tutorials, I dived in, figured it out, and recorded the whole thing. What follows are (found footage) stills of my adventure. To make it easier for whomever follows. At their own peril.
Required tools
- Phillips head screwdriver, mine was size 1.4x40mm,
- Thin tweezers,
- Air blower,
- Soldering iron,
- Anti-static and safety precautions.
If changing the hot mirror, you'll need;
- the replacement glass,
- glass cleaning cloth.
Preparation
Remove the lens, battery, sd card, and hot shoe protector.
Case Disassembly
( Details )
Body Disassembly
( Details )
Hot Mirror Assembly Disassembly
( Details )
Re-assembly
Do everything in reverse.
Result
If everything goes well the camera will look just like it did before. Except for when you look at the hot mirror without a lens in place. With the original hot mirror you see the light filtering appearing as colour, typically red. With the clear glass that colour is gone.
( Before and After )
Many hours after removing that first screw I was relieved to have my camera still working, and displaying very interesting colours. Green plants are orange. A sunny day is light orange. An overcast sky is reddish-orange. A snow filled sky is very pink. The evening sky is much brighter. And that's just with natural light. Candles burn purple-red. Does it really matter if I have two washers/spacers left over and no idea where they came from? *cough*
The next step for me is to get some external filters to see what else the world holds for my camera. And possibly some external (safe) UV/IR light sources, for more forensic explorations.
