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Because the battery is running down.
As the battery gets discharged, it's voltage decreases and it's internal impedance probably rises, so that the charging circuit which charges the energy storage capacitor has to work harder and harder to complete the charge.
The solution is to have spare batteries ready.
What else can I help you with?
What is the guide number of the Canon 600EX RT flash?
The guide number of the Canon 600EX RT flash is 60 meters at ISO 100.
What are the key differences between the Canon 580EX II and the Canon 600EX RT?
The key differences between the Canon 580EX II and the Canon 600EX RT are that the 600EX RT has built-in radio transmission for wireless flash control, while the 580EX II relies on optical transmission. Additionally, the 600EX RT has a higher maximum guide number and faster recycling time compared to the 580EX II.
What are the key differences between the Canon Speedlite 580EX II and the Canon Speedlite 600EX-RT?
The key differences between the Canon Speedlite 580EX II and the Canon Speedlite 600EX-RT are that the 600EX-RT has built-in radio transmission for wireless flash control, while the 580EX II relies on optical transmission. Additionally, the 600EX-RT has a higher maximum guide number and faster recycling time compared to the 580EX II.
What are the differences between the Canon 600EX-RT and the Yongnuo YN600EX-RT flash units?
The Canon 600EX-RT and Yongnuo YN600EX-RT flash units are similar in features and functionality, but there are some key differences. The Canon 600EX-RT is the original model and is known for its reliability and compatibility with Canon cameras. It has a higher price point but offers superior build quality and performance. On the other hand, the Yongnuo YN600EX-RT is a more affordable alternative that offers similar features and functionality. However, it may not be as durable or have the same level of compatibility with Canon cameras. Ultimately, the choice between the two will depend on your budget and specific needs.
What are the key differences between the Canon 600EX-RT and the 430EX II speedlite flashes?
The key differences between the Canon 600EX-RT and the 430EX II speedlite flashes are the power output, wireless capabilities, and advanced features. The 600EX-RT has higher power output, built-in wireless radio transmission, and more advanced features like multiple flash control and custom functions compared to the 430EX II.
What are the features and specifications of the Yongnuo Flash 600EX-RT?
The Yongnuo Flash 600EX-RT is a camera flash with features like high-speed sync, TTL mode, and wireless control. It has a guide number of 60m at ISO 100 and 200mm. The flash can be rotated 180 degrees in both directions and tilted up to 90 degrees. It is compatible with Canon's RT system for wireless control and has a recycle time of about 3 seconds.
What are the key features and specifications of the Yongnuo 600EX-RT flash?
The Yongnuo 600EX-RT flash is a versatile and powerful external flash unit designed for professional photographers. It features a guide number of 60m at ISO 100, a zoom range of 20-200mm, and supports high-speed sync and stroboscopic flash modes. The flash is compatible with Canon's wireless radio transmission system and has a built-in 2.4G wireless receiver for off-camera flash control. Additionally, it has a color temperature of 5600K and can be powered by 4 AA batteries or an external power source.
What type of flash does a canon t3i need?
A recommended flash for the Canon T3i is the Canon 430EX II. This flash is about $270. However, honestly, any Canon flash will work well with the camera.
How do I choose a flash for your canon 7d?
To choose a flash for your Canon 7D, consider the type of photography you'll be doing and your budget. Look for a compatible speedlight, preferably from Canon's lineup (like the Speedlite 430EX II or 600EX II-RT) for optimal performance and features. Check for essential features such as TTL (Through The Lens) metering, wireless capabilities, and a swivel head for bounce lighting. Lastly, consider whether you need additional accessories like diffusers or external battery packs for longer shoots.
How can I use a Canon flash on a Sony a7 camera?
To use a Canon flash on a Sony a7 camera, you will need a hot shoe adapter that is compatible with both Canon and Sony cameras. This adapter will allow you to attach the Canon flash to the Sony a7 camera's hot shoe, enabling you to use the flash with your Sony camera.
What is the best wireless flash trigger for the Canon 6D camera?
The best wireless flash trigger for the Canon 6D camera is the Canon ST-E3-RT Speedlite Transmitter.
What is the best flash trigger for the Canon 6D camera?
The best flash trigger for the Canon 6D camera is the PocketWizard Plus III.
