If your Canon PowerShot G7 Mark II camera frequently displays a "Memory Card Locked" or "Memory Error" message, it could be due to a few potential reasons:

Memory card lock switch: Check the side of your memory card to ensure that the lock switch is not in the locked position. This switch is used to protect the contents of the card from being accidentally deleted or overwritten. If it is locked, slide the switch to the unlocked position.

Damaged or incompatible memory card: The memory card itself may be damaged or incompatible with your camera. Try using a different memory card to see if the issue persists. Ensure that the card is compatible with your Canon PowerShot G7 Mark II and meets the specifications recommended by Canon.

Dirty or faulty memory card contacts: Sometimes, dirt or debris can accumulate on the metal contacts of the memory card or within the card slot, leading to connectivity issues. Gently clean the metal contacts on both the memory card and the camera with a soft, lint-free cloth. Avoid using liquids or harsh materials that could damage the contacts.

Corrupted or fragmented files: If the memory card has corrupt or fragmented files, it may result in memory errors. Try formatting the memory card using your camera's formatting option. Formatting erases all data on the card, so make sure to back up any important files before proceeding.

Firmware issues: Occasionally, firmware glitches can cause memory card errors. Ensure that your camera's firmware is up to date. Visit Canon's official website and check for any available firmware updates for your specific camera model. Follow the instructions provided by Canon to update the firmware if necessary.

If none of these solutions resolve the issue, it is recommended to contact Canon customer support or take your camera to an authorized service center for further assistance. They will be able to diagnose the problem more accurately and provide the necessary support to resolve the recurring memory card errors.

Shooting for an extended period can indeed cause overheating in cameras, including the Canon PowerShot G7 Mark II. However, overheating generally affects the camera's internal components rather than the memory card itself. The memory card is a separate storage device and typically does not generate heat on its own.

That being said, if your camera becomes excessively hot due to prolonged use, it may indirectly impact the memory card's performance. High temperatures can potentially lead to unstable operation or cause the camera to shut down unexpectedly, resulting in error messages related to the memory card. In extreme cases, heat can also damage the memory card, but this is relatively rare.

To minimize the risk of overheating, consider taking the following precautions:

Take breaks: If you're shooting for an extended period, give your camera occasional breaks to cool down. Turn it off and allow it to rest for a few minutes before resuming shooting.

Avoid direct sunlight: Direct exposure to sunlight can significantly increase the temperature of your camera. Whenever possible, shoot in shaded areas or use a camera cover or umbrella to shield it from direct sunlight.

Manage camera settings: Certain camera settings, such as continuous shooting or video recording at high resolutions, can generate more heat. Adjust your shooting settings as necessary to reduce the strain on the camera and minimize heat buildup.

Proper ventilation: Ensure that the camera's vents or cooling mechanisms are not blocked or obstructed. This allows heat to dissipate more effectively.

External cooling solutions: In some cases, using external cooling solutions, such as a fan or a heat sink, can help regulate the camera's temperature during prolonged shooting sessions.

Remember that overheating can occur in any camera, and it's important to follow the manufacturer's guidelines and recommendations regarding operating temperatures and usage limits. If you continue to experience persistent overheating issues, it's advisable to consult Canon customer support or take your camera to a service center for further evaluation.

Yes, the speed of your memory card can indeed affect shooting video and potentially contribute to memory errors. When shooting video, particularly at higher resolutions and bit rates, the camera needs to write a large amount of data onto the memory card continuously. If the memory card's write speed is too slow, it may struggle to keep up with the camera's data transfer rate, leading to issues such as dropped frames, recording interruptions, or even memory errors.

Here are some key points to consider regarding memory card speed and video shooting:

Minimum Write Speed: Check the camera's specifications or user manual for the recommended minimum write speed or "Class" of memory card for video recording. Cameras often require Class 10 or higher (UHS Speed Class) cards for smooth video capture. Using a lower speed card may result in performance issues or errors.

Video Bit Rate: Higher-quality video formats, such as 4K or high-definition (HD) with high bit rates, require faster write speeds to maintain a consistent flow of data. Ensure that your memory card's write speed is sufficient for the video format and settings you're using.