Canon AV1

I now have a Canon AV1 with a shutter problem. Can I fix it? I’ll have a good go…

What the listing stated:

This camera is in very good overall condition. Some light signs of use but this is generally minor. The light meter is responsive when you press the shutter button down. However, the shutter will not fire. Spares or repairs only.

EBay

I’ve just paid £8:98GBP for this camera, and I believe this is a great price for a piece of camera history. The AV was introduced due to there being a demand for aperture priority at the time, whereas its Sibling, the AE1 was purely shutter priority. Later cameras would come to incorporate both systems. This one has a known problem with a stuck mirror – it won’t fire and I think I can easily sort this problem. Well I hope I can.

Here’s a little information about this camera:

The Canon AV-1 is a 35 mm single-lens reflex camera with an FD lens mount, introduced by Canon Inc. in 1979.

The AV-1 is very similar to the 1976 AE-1 but provides aperture priority autoexposure rather than the AE-1’s shutter speed priority AE. The camera is not capable of fully manual exposure. Canon’s international distributors, particularly in the United States, had clamored for such a camera because competing brands offered mostly aperture-priority cameras and some preferred it. The AV in the name referred to the type of autoexposure; Av (Aperture Value) is a common abbreviation for aperture priority.

When this camera appeared, a new range of FD lenses was introduced, with instant mounting/unmounting of the lens. This is called the New FD mount and does away with the older type of mounting ring which was fitted on to the rear of the lens and was awkward to use and needed two hands, to a newer, easier system whereby the user lined up the red dot on the lens, with the red dot on the camera and simply turned the whole lens clockwise until it clicked into place.

All the other AE-1 accessories fit the AV-1.

Wikipedia

I’ve decided to collect all of the Canon “A”Series of cameras, and this adds to my current collection that consists of an A1 and an AE1. There were I believe, six cameras in this range and this current camera will be my fourth. Here’s a list of the “A” range of cameras below. I have highlighted with an asterisk all that I currently have at the date of this blog post being published:

Assessment:

The original listing description does not match the issues that I have found. It originally stated that the light meter is responsive, it isn’t. It also stated that the shutter does not fire, it does when a battery is installed. The battery level indicator in the viewfinder does work when the check button on the camera is depressed. However when you focus the camera and half depress the exposure button to get a meter reading, the needle in the viewfinder doesn’t respond, this is the only real issue I can see, I guess the seller must have been looking at another camera as he wrote the listing for this camera.

Battery level reading in the viewfinder

All settings appear to be working as they should, the “B”setting allows me to scroll through the “f” stop settings to see the aperture leaves working as they should. All “f” stop settings appear to work on the auto setting.

It’s a smart little camera, this a tidy example of this version with no dents, dinks and just some very fine scrapes on the base as you’d expect from a camera fast approaching 46 years old (1979-2025). It’s a bit dirty and needs a good clean inside and out, the light seals are in a good state and not requiring replacement or repair just yet, however the mirror bumper has deteriorated and this will need replacement.

Mirror bumper needs replacement

The shutter curtain is in a good and untouched condition.

I’m going to research issues with the exposure indication, and I will incorporate my findings within the repair section.

Repair:

I thought, perhaps the camera is suffering from lack of use? It certainly is probably some considerable time since this camera was last used. Firstly I’ll try exercising all the controls that affect the exposure reading, including the mode dial, film speed dial, aperture ring, etc. I’ll work them backwards and forwards a few times to see if this helps to clean the variable resistor tracks inside from any surface contamination. When the FD lens is attached you must be mindful that the “A” setting on the lens is not used and that the f stop settings are used in a manual manner, lens auto is not a function on this camera.

To be honest, this did seem to work sort of. The needle has moved off the bottom a bit. The ASA setting was on 100, so I put it up to 1600 as it is quite a dark day and the sensitivity of the light sensor would be reflected better at this setting. It moved a bit but I wasn’t totally convinced that this indication in the viewfinder reflected the true light situation.

I set a higher ASA for testing

There’s also a small, silver push-button just inside the lens mount at about the 4-5 o’clock position. If you press this in and release it a few times for the same reason, as exercising the dials as I did above, it is just like exercising a body part and keeping it supple. Leave items like this, designed for high usage redundant for a while and they soon seize up. it has also been known to assist with getting the needle indication working after a long lay off.

That silver button, highlighted

(A little bit of trivia here – this button is normally used for the lens to inform the body of the lens’s maximum aperture. This information isn’t needed on the AV-1, but Canon included it anyway for some reason, and it does affect the exposure.)

And combining these actions, moving the settings dial and the button inside the lens mount seems to have revitalised the light meter and I’m now quite confident that it is working as intended. It was just lazy due to low use and needed a bit of non invasive intervention to get it working again. And non invasive intervention is always a good thing. So with the setting back to 200ASA I was able to show the meter working in this very short and basic video below.

A brief video showing the meter needle moving

I’m confident that the metering issue is now sorted so let’s get that new mirror damper installed.

A lot of dirt came off of the area where the replacement damper had to go, it had completely deteriorated and took quite a bit of cleaning.

Now in place it has silenced the mirror movement somewhat, and will provide some longevity as it moves into the twilight of its years. It will be good for many more rolls of film yet. Whilst in the lens area I have cleaned the mirror and prism, and given the area a good blow through and put the lens back in place to seal it all up. It is now clean internally. I have a couple of body caps on order that will assist with storage when the lens is removed.

Just a final clean with some cockpit cleaner, and this camera has come up lovely, I’ve tested it on a Power winder “A” as well and it sounds just so good and “retro”. It’s perfect.

Result:

Well. I now have another lovely example of one of the Canon “A” range of cameras to add to my collection. This brings my current total to four out of the six available, two of which are still currently under repair. For less than £10:00GBP it is so easy to own a piece of photographic history. I have been lucky here that the work that had to be done was non intrusive, and to be quite honest was just basic everyday maintenance. The only real work of sorts was installing some mirror damper felt, of which I have plenty of stock. Cleaning was quite intensive but the overall result is amazing.

I will eventually run a roll of film through for a final quality check, however I have such a backlog it will take me a while. When I do however run that test roll I will post a link here:

Really pleased with this repair, and the fact that another lovely old camera has been saved from the scrap heap and been given a new lease of life.

Thanks as always for passing by. It is as always, very much appreciated.

The Canon “A” series of cameras

A small piece regarding the Canon “A” series camera range. Development and technological advancement.

As i seem to be purchasing a number of the old “A” type camera bodies for repair, I have now decided to add the full range of “A” type cameras to my collection. I’m a tad biased as I have used Canon cameras right from the very start of my photographic education, in fact the first one i used was an A1 variant. I’ve put together the following piece to explain why these cameras were so popular, and to highlight their technological advancement along the way, the technology that influenced other manufacturers to up their game and give the consumer just what they wanted out of a camera, options and greater control.

My Canon A1

The Canon A-series of 35mm SLR cameras, produced from the mid-1970s through to the early 1980s, represents one of the most influential periods in Canon’s film-camera history. It began with the groundbreaking Canon AE-1 in 1976, a camera that reshaped the industry by integrating a microprocessor – the first mass-market SLR to do so. This innovation allowed Canon to simplify mechanical complexity and reduce manufacturing costs whilst offering features previously found only in higher-end professional bodies. The AE-1’s shutter-priority auto-exposure, bright viewfinder, and strong reliability made it both approachable for beginners and capable enough for enthusiasts, turning it into one of the best-selling SLRs of all time.

My AE-1

Canon quickly expanded the lineup to address different types of photographers and to test new electronics-driven features. The AT-1 provided a more affordable, all-manual alternative, whilst the AV-1 (1979) offered aperture-priority automation, catering to photographers who preferred creative control over depth of field. The flagship A-1 (1978) pushed the boundaries even further – it became the world’s first SLR to offer full programmed auto-exposure, alongside shutter priority, aperture priority, and manual modes. This versatility foreshadowed the automation and electronic sophistication that would dominate future camera generations.

My AV-1

In the early 1980s, Canon introduced the AE-1 Program, refining the original AE-1 with a more advanced program mode and improved ergonomics. The final notable entry, the AL-1, included an innovative Focus Assist system that used contrast-detection indicators to help users achieve sharp focus – an early technological step toward the autofocus systems that would soon reshape the industry.

Collectively, the Canon A-series brought electronic control, affordability, and ease of use into the mainstream, playing a key role in shifting photography toward the automated, electronically driven era. Decades later, these cameras remain admired for their durability, classic design, and the satisfying, hands-on shooting experience they continue to provide.

At the time of writing, i have in my possession three of the six variants that were produced, and presently I am scouring the sales platforms to acquire suitable candidates for the remaining parts of this collection, to work on. I will update via this site as and when i have another one of this series to feature in a post. My current collection consists of the cameras below marked with an asterisk:

My current cameras in the “A” range marked with an asterisk

I would like to obtain a special mount for this series of cameras so i can display them as a collective sample of this wonderful range. They will all of course, all be fully usable, not museum pieces.

Thanks for passing by. Always appreciated.