Canon EOS

Why is My Canon EOS Not Focusing? (Major Causes & Solutions)

The first step in diagnosing this problem is to check the shooting menu on your Canon EOS. You may have accidentally clicked on the “Manual” mode, or there is something blocking the mirror.

Check the following tips to help you solve the problem. Tough subject? Mirror obstructed by foreign particles?

You may be facing other problems. In any case, the following guide will help you get your camera back on track.

AF-assist beam emitted from Canon EOS

If you’re having trouble focusing, you may have the problem that the AF-assist beam ejected from your camera isn’t focusing. This can happen for several reasons.

First, your AF-assist beam may not be able to cover a specific area of your subject.

Second, you may be covering the AF-assist beam with your finger or other object. In any case, you need to check that all of these issues are resolved before trying to focus the image.

Another reason why your AF-assist beam isn’t focusing is because you’ve pressed the shutter button halfway.

The resulting flash is designed to illuminate your subject so that you can focus more accurately. However, you might also hear the noise when the AF-assist beam fires. This is normal and doesn’t mean your camera’s AF-assist beam isn’t working properly.

The best way to fix this is to purchase a dedicated speedlite for your camera. This will help your camera focus in low light conditions. You can also buy an external speedlight and charge it through it via USB to use on location. If you’re still having trouble focusing, you can try the dedicated speedlite for your Canon EOS camera. You can also try the AF-assist beam on the dedicated speedlite.

The AF-assist beam ejected from a Canon EOS camera may not be visible. This is a problem for sensor-based AF. However, a high-output red LED is readily available for your Canon EOS camera. Using it correctly will help the camera focus. If you don’t have a flash, you may find it difficult to focus on the subject.

Sensor choice

If you are experiencing problems focusing on your camera’s lens, it may be a simple matter of changing the settings in your camera. Check the maximum aperture and manual focus settings.

Some custom settings will prevent autofocus from working, and the focus confirmation light will not illuminate.

To change these settings, refer to the instruction manual for your camera. If you are using a non-Canon lens, consult with a Canon customer service representative for further guidance.

First, set the AF button. The AF button is usually located on the camera’s body, so it should be pressed halfway to lock in the focus. You should also set the focus lock mode if your camera has one.

Essentially, turn off the AF button if you are using the Creative Zone mode. This mode does not include a beeper, which is normally present. You should also set the exposure mode of your camera to Manual and then turn it on.

If you have a camera that does not have autofocus, it is very likely that the lens contacts are dirty. These can interfere with the AF points and prevent autofocus from working.

It is therefore important to clean the lens’ contacts properly, and make sure they are in good condition.

The camera’s lens must be securely mounted to avoid any interference. If this method fails, you can bring the camera to a Canon service center.

Tough subjects

You might wonder why your camera isn’t focusing on tough subjects, and while there are several possible reasons, the most common cause is a poor AF performance. In most cases, the best focus point is the center, which has a maximum technology.

Moving away from this point will result in slower and less reliable performance. The same problem is compounded in low-light situations, which further complicates matters.

Mirror obstructed by foreign particles

A recent customer complaint about their Canon EOS camera reveals that the mirror is obstructed by a foreign particle.

This is not the first time this has happened – Canon has made pellicle mirror SLR bodies in the past, and in the 1960s they produced special Olympic-game cameras. But what is the best solution for this problem? Canon’s new EOS M camera is a better option.

The most obvious solution is to clean the camera’s lens. The camera’s mirror collects dust, which can affect the viewfinder.

You can clean it by using a small brush or a blower, if necessary. But don’t forget to clean the exterior of the lens, which can collect larger dust, grease, or dirt. This can negatively impact the quality of your pictures, so keep it clean.

Cleaning metal contacts

If your camera is not focusing, one of the first steps you should take is cleaning the metal contacts on your lens. These contacts are gold in color and are the means by which your camera communicates with your lens.

To clean these contacts, use a pencil eraser and remove any dust before moving onto the next step.

This procedure should fix ERR99 in no time. However, you should always do this process with a dry cloth, as wet contacts can cause malfunctions.

The next step is to remove the lens cap and clean the lens. Use a blower to remove large pieces of dust from the lens. When cleaning your lens, you should also blow the back of the lens with a blower.

The blower can also be used to clean the contacts. Then, you can dip a clean swab in isopropyl alcohol or other cleaning solution. Ensure that the swab is clean and does not leave any residue.

Be sure to wear light vinyl gloves or wear a protective lens cap when cleaning the metal contacts on your camera.

In addition, the sensor in your Canon EOS camera has metal contacts that need to be cleaned to ensure that it will work properly. If the sensor is not functioning properly, you may have a problem with the lens. Dust can collect on the sensor and cause a dark speck to appear on your images. To clean the sensor, first turn on the camera. To do this, press the ‘Sensor Cleaning’ button on the menu bar.

Touch & drag AF

If you are using Canon EOS and are experiencing issues with autofocusing, you may be having issues with touch & drag AF.

If you are experiencing focusing issues while using touch & drag AF, try disabling this feature on your camera.

It will work even if you are not using the viewfinder or live view mode. However, you may find that touch & drag AF is activated when shooting via the display.

You can also change the autofocus mode of your camera with the help of the AE Lock button. You can assign the AE Lock button to either One-Shot or AI-Servo AF, and you can also change it to a different mode.

In addition, the AE Lock button can be assigned to a particular AF tracking point, making it easier to pick the best focus point for your shot.


If you can’t find the right AF mode for your camera, you can try using AI Focus AF.

This mode allows you to focus on different subjects at the same time, while still making adjustments later on in post-processingprocessing.

The auto white balance is related to each exposure, so you can change it later if you need to. If your subject moves, touch & drag AF is helpful.

Otherwise, use servo AF to keep track of your subject.