Changing the optics is one of the most frequent operations faced by a photographer working with a professional. system-camera. Whether it is a mirrorless or mirrorless model, the process requires precision and understanding of the bayonet's device. Incorrect actions can lead to dust entering the matrix or even mechanical damage to the contacts.
Many beginners are afraid to disconnect the optics for the first time, for fear of dropping a heavy element or damaging fragile electronic connections. However, if you know the location unlock-button And you follow the basic safety rules, and it takes only a few seconds. In this article, we will discuss in detail the nuances of working with different types of cameras. Canon.
The right algorithm of actions guarantees a long life of your equipment. We will look at the differences between bayonet EF and RFWe also pay attention to cleaning contacts, which is often ignored by users. Prepare to work with maximum confidence in each movement.
Preparation of the workplace and the camera
Before you start manipulating optics, you need to ensure the cleanliness and safety of the process. Dust and sand - the main enemies of the matrix, so it is best to change the lenses indoors, away from open windows, drafts or sandy beaches. If you are outside, try to turn your back on the wind.
It is important to prepare the surface on which the removed lens will be placed in advance. Use a clean towel, special case or lens cover. Never put the optics on. posteriorly on the ground or a dirty surface, even if you plan to put the lid on right away. Scratches on the back window can ruin the quality of all future shots.
It is also worth checking the battery before the procedure. Although power outages are not always critical for mechanical removal, some cameras are not. Canon block the diaphragm in the closed position when the power is turned off, which interferes with visual control. Make sure your hands are clean and dry so you don’t leave greasy marks on your contacts.
⚠️ Warning: Never change the lens while holding the camera with a belt around your neck. This creates a risk of falling of the entire structure when undocking the elements.
Differences between Canon EF and RF
Company Canon It uses two main types of bayonet in its modern cameras. Understanding the difference between them is critical because the mechanism of fixation is different. Bayonet EF It is used in the EOS xxx, xxxD, xxD, xD series SLR cameras, as well as in professional models 1D and 5D/6D/7D.
In mirror systems, attachment occurs using a rotary mechanism. The lens has a red (for full-frame optics) or white (for crop optics) dot, which must be combined with a similar label on the camera body. After combining, the lens is rotated to a characteristic click. To remove it, press the button and turn the ring counterclockwise.
The situation is different with mirrorless cameras in the series R, which use the bayonet RF. There is no mechanical unlock button in the usual sense on the lens itself (although there is a button on the camera body). RF optics often have an additional electronic control ring, and the removal process itself requires simultaneous pressing of a button on the body and rotating the lens.
| Characteristics | Bayonet EF (Mirror) | Bayonet RF (Mirrorless) |
|---|---|---|
| Type of camera | EOS DSLR (1D, 5D, 80D, 2000D) | EOS R (R3, R5, R6, R50, RP) |
| The locking mechanism | Mechanical turnaround | Electronic-mechanical |
| Unlock button | On the casing (left) | On the camera body (front) |
| Contacts | Located on a bayonet ring | Located inside the bayonet |
When using adapters (adapters) for optics installation EF camera-wise RFThe process of removal is the same as with native RF optics. The adapter acts as part of the body, and you need to remove the entire structure as a whole, or first disconnect the lens from the adapter if it has its own lock button.
Step-by-step instruction: how to remove the lens
The process of dismantling optics requires a clear sequence of actions. First, you need to turn off the camera. Although many modern models allow you to change lenses in the on state, the camera is put into mode. OFF ensures that the matrix will go into the parking position (in mirrorless) and the electrical contacts will be de-energized.
Find the unlock button of the lens. On most DSLR cameras. Canon It is located on the front panel of the body, to the left of the bayonet (if you look at the camera from the front). On the series' mirrorless cameras R The button is also in the front, but can be shifted lower or higher depending on the model.
Hold the camera tightly by the handle with one hand, and hold the lens with the second hand. Press the button to unlock the thumb of the right hand (or left, depending on the grip) and, without releasing the button, turn the lens clockwise (if you look at the camera from behind) or counterclockwise (if you look at the front on the bayonet). Usually a rotation of about 45-60 degrees is required before the click.
⚠️ Warning: If the lens is not rotated, do not use force. Check if the unlock button is pressed to the end and if you understand the direction of rotation correctly.
After the lock is unlocked, carefully remove the lens, holding it with both hands. Close it immediately with the back cover to protect the lens and contacts from dust and damage. It is also advisable to put a mount or body cap on the camera unless you plan to install a different optics right away.
☑️ Proper lens removal
Working with the Depth of Field Prevising button
Sometimes photographers are faced with a situation where the aperture of the lens is closed to a minimum value (for example, f/22 or f/32), and nothing is visible through the viewfinder. In this case, the button may help. Depth of Field Preview (Deep field predication). It is usually located next to the shutter button or on the front panel of the case.
Pressing this button causes the aperture to close to the working value, which allows you to estimate the depth of field. However, when removing the lens, this knowledge is useful because when the camera is turned off, the aperture on many lenses. Canon EF It is open to the maximum value. If you see that the aperture lobes are closed and the camera is off, the mechanism may have jammed.
To check the aperture status on the removed lens with EF mount, you can use a simple trick. Find on the bayonet ring of the lens a small lever (petal) in the lower part. If you carefully move it to the side, the diaphragm petals should close. Once you let go of the lever, you should see them fully open again. It confirms the serviceability. power-driven Aperture.
In lens with bayonet RF Some new EF aperture control is completely electronic. On such lenses, the mechanical lever on the bayonet may not be, or it performs another function. Checking the aperture on them is possible only when installed on the camera and power on through the menu or special combinations of buttons.
Clearing contacts and caring for the bayonet
Regular cleanliness of contacts is the key to stable operation of autofocus and data transmission EXIF. Over time, the gold contacts of the lens and camera can oxidize the layer or accumulate dirt, which leads to errors. Err 01 (lens communication error). For cleaning, use a special liquid for cleaning optics and lilaless wipes.
Never use alcohol, acetone or household cleaners, as they can damage plastic elements and contact coatings. The movements of the napkin should be soft, directed from the center to the edges or along the contacts, without strong pressure. Pay special attention to the contacts on the lens itself, as they are more accessible to contamination.
- 🧹 Use only specialized kits for cleaning optics.
- 💨 Before wiping the contacts, remove the large dust with a pear or spray.
- 🚫 Do not touch your fingers to avoid fat.
After cleaning, allow the contacts to dry for a minute before installing the lens. Regular maintenance of the bayonet prevents the appearance of "noise" on the pictures and focusing errors at the most inopportune moment. This is especially true for reportage photographers working in difficult weather conditions.
If the contacts are oxidized, you can gently wipe them with an ordinary school eraser, but this should be done extremely carefully so that the eraser crumbs do not get inside the lens.
Typical errors and problems in removal
One of the most common mistakes is to try to remove the lens without fully pressing the unlock button. The user presses the button not hard enough, and the lock does not go into the groove. As a result, there is strong resistance when turning. Never force a spin.If you feel a hard accent - this can lead to breakage of plastic elements of the bayonet.
Another problem is the dust hitting the matrix when changing the optics. Even in a clean room, there are many microparticles in the air. To minimize the risk, try to keep the camera bayonet down when changing the lens. In this position, gravity is working for you, and dust falls on the floor, not on the sensor.
Sometimes the lens sticks to the camera. This can happen due to temperature changes or prolonged downtime in a compressed state. If the lens is not removed, try to gently (without fanaticism) press it towards the camera to ease the voltage of the lock spring, and simultaneously press the unlock button. It also helps to easily swing the lens left-right when trying to turn.
⚠️ Warning: If you hear a crunch or see deformation of the metal petals of the bayonet, immediately stop the attempt to remove and contact the service center.
FAQ: Frequently Asked Questions
Can I take the lens off the Canon camera?
Technically, it is possible, and modern cameras. Canon Protected from short circuit. However, it is always recommended to turn off the power before changing the optics. This ensures that the mirrorless matrix is closed with a protective curtain and the electrical contacts are completely de-energized, which reduces the risk of accidental voltage surge or contamination of the open matrix.
What if after removing the lens on the matrix remained dust?
Don’t panic and don’t try to blow your mouth over the matrix – you’ll only add moisture and small drops of saliva. Use the sensor ultrasonic cleaning feature built into the camera (available on the menu). If this doesn’t help, use a special pear while holding the camera down with the bayonet. For persistent contamination, it is better to turn to professional cleaning.
Why is the RF lens not removed even though the button is pressed?
Make sure you turn the lens in the right direction. On mirrorless. Canon The direction of rotation may differ from the usual in comparison with DSLRs, or require a clearer combination of marks. Also check if the lens is locked with an additional stopper (some professional models have a Lock switch on the lens itself).
Do I need to lubricate the bayonet lens?
Absolutely not. No lubricants (lithium, graphite, silicone) should be allowed to enter the electrical contacts or the camera mirror. Bayonet mechanism Canon It's designed for dry work. Lubrication will only attract dust, which will turn into abrasive porridge, scratching the contacts and deteriorating the connection.
The main secret of long service bayonet - regular, but neat cleanliness of contacts and the absence of mechanical violence during jamming.