Here's a side-by-side comparison of the three Canon cameras: the Canon Rebel T3i, Canon EOS 90D, and Canon EOS R7.

Canon Rebel T3i

• Sensor: 18 Megapixel APS-C CMOS sensor
• Processor: DIGIC 4
• ISO Range: 100-6400 (expandable to 12800)
• Video: Full HD recording at 30p/24p
• Display: 3.0-inch fully articulated LCD screen
• Dimensions: 132 x 103 x 80 mm
• Weight: 575 grams (body only)
• Notable Features: The Rebel T3i includes a swivel screen, making it easier to shoot at various angles. It also supports wireless flash control and has an optical viewfinder that provides a 95% field of view (FOV).
• Review Summary: It is seen as a solid entry-level DSLR, particularly for beginners, owing to its easy-to-use interface and comprehensive features for still photography and basic videography (The Digital Picture, CNET).

Canon EOS 90D

• Sensor: 32.5 Megapixel APS-C CMOS sensor
• Processor: DIGIC 8
• ISO Range: 100-25600 (expandable to 51200)
• Video: 4K video recording at 30p without cropping
• Display: 3.0-inch fully articulating touchscreen
• Dimensions: 140 x 104 x 76 mm
• Weight: 701 grams (body only)
• Notable Features: The EOS 90D offers advanced features like Dual Pixel autofocus in live view and video modes, with 45 AF points for still photography. It also has enhanced connectivity options, including Bluetooth and Wi-Fi.
• Review Summary: The EOS 90D is a mid-range DSLR that provides excellent image quality, high-speed performance, and is well-suited for both photography and video projects, making it a versatile option for serious enthusiasts and pros alike.

Canon EOS R7

• Sensor: 32.5 Megapixel APS-C CMOS sensor
• Processor: DIGIC X
• ISO Range: 100-32000 (expandable to 51200)
• Video: 4K video recording at up to 60p and full HD at 120p
• Display: 3.0-inch vari-angle touchscreen
• Dimensions: 132 x 90 x 93 mm
• Weight: 612 grams (body only)
• Notable Features: The EOS R7, part of the mirrorless range, features In-Body Image Stabilization (IBIS) and a high-speed continuous shooting mode at up to 15 fps (mechanical) and 30 fps (electronic). It also employs advanced dual pixel autofocus with subjects tracking capabilities.
• Review Summary: The EOS R7 is designed for enthusiasts who require advanced features for both photography and videography—especially in wildlife and sports scenarios. Its compact size and mirrorless design make it a strong contender for those looking to upgrade from DSLR systems.

Conclusion

In summary, the Canon Rebel T3i is ideal for beginners looking for an affordable entry into DSLR photography, while the Canon EOS 90D strikes a balance between advanced features and usability for enthusiasts. The Canon EOS R7, as a mirrorless option, offers cutting-edge technologies and features catered towards serious photographers who need high-performance capabilities while maintaining portability. Each camera has unique strengths catering to different levels of photography skills and needs.Here is a side-by-side comparison of the Canon Rebel T3i, Canon EOS 90D, and Canon EOS R7 based on the specifications and reviews gathered.

Canon Rebel T3i

• Sensor: 18 Megapixel APS-C CMOS sensor
• Processor: DIGIC 4
• ISO Range: 100-6400 (expandable to 12800)
• Autofocus: 9-point AF system
• Continuous Shooting: 3.7 fps
• Video Recording: 1080p (maximum 30 fps)
• Display: 3.0-inch Vari-angle LCD
• Weight: Approximately 575 grams (body only)
• Special Features: Wireless flash control, fully articulated screen for shooting at odd angles, optical viewfinder.

The Rebel T3i is recognized for its user-friendly design and features like a swivel screen, making it appealing for beginners in photography. Its older specifications might not hold against newer models, but it still offers decent image quality and ease of use (source, source).

Canon EOS 90D

• Sensor: 32.5 Megapixel APS-C CMOS sensor
• Processor: DIGIC 8
• ISO Range: 100-25600 (expandable to 51200)
• Autofocus: 45-point all cross-type AF
• Continuous Shooting: Up to 11 fps
• Video Recording: 4K at 30p (full-width readout), 1080p at 120 fps
• Display: 3.0-inch Vari-angle touchscreen
• Weight: Approximately 701 grams (body only)
• Special Features: Dual Pixel autofocus for live view and video, built-in Wi-Fi and Bluetooth, superior battery life.

The EOS 90D stands out for its high-resolution sensor and enhanced autofocus capabilities, making it suitable for various photography styles including wildlife and sports. Its robust build and modern features like 4K video recording appeal to both hobbyists and professionals (source, source).

Canon EOS R7

• Sensor: 33 Megapixel APS-C CMOS sensor
• Processor: DIGIC X
• ISO Range: 100-32000 (expandable to 51200)
• Autofocus: Dual Pixel CMOS AF II with 651 AF points
• Continuous Shooting: Up to 15 fps (mechanical shutter), 30 fps (electronic shutter)
• Video Recording: 4K video at up to 60p, 4K crop mode
• Display: 3.0-inch Vari-angle touchscreen
• Weight: Approximately 612 grams (body only)
• Special Features: In-body image stabilization (IBIS), advanced tracking capabilities for fast-moving subjects.

The EOS R7 is a more recent addition to Canon's lineup, offering advanced technology and features suited for high-performance photography. Its impressive autofocus system and video capabilities make it a versatile choice for hybrid shooters who need both stills and high-quality video (source, source).

Summary

In summary, the Canon Rebel T3i is an excellent starting point for beginners, with its articulated screen and ease of use. The Canon EOS 90D offers significant upgrades in resolution, autofocus, and video capabilities, making it a solid choice for enthusiasts and semi-professionals. The Canon EOS R7 is geared towards advanced users, featuring cutting-edge technology for fast-paced shooting environments, making it suitable for both photography and videography enthusiasts. Each camera serves different user needs, from entry-level options to advanced, high-performance systems.