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Main
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Price
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SENSOR Sensor size: Full frame (36 x 24 mm)
IMAGE ISO: Auto, 100 - 25600 in 1/3 stops, plus 50, 51200, 102400 as option
IMAGE Boosted ISO (maximum): 102400
PHYSICAL Battery Life (CIPA): 1090
CONNECTIVITY Wireless: Built-In
OTHER FEATURES GPS: Built-in
Main
Model
Price
Advantages
SENSOR Effective pixels: 24 megapixels
SENSOR Max resolution: 6000 x 4000
SENSOR Sensor photo detectors: 25 megapixels
IMAGE White balance presets: 12
PHOTOGRAPHY FEATURES Maximum shutter speed: 1/8000 sec
PHOTOGRAPHY FEATURES Built-in flash: Yes (Pop-up)
PHOTOGRAPHY FEATURES Continuous drive: 6.0 fps
SCREEN / VIEWFINDER Screen size: 3.2″
SCREEN / VIEWFINDER Screen dots: 1,228,800
VIDEOGRAPHY FEATURES Microphone: Stereo
OPTICS & FOCUS Number of focus points: 51
PHYSICAL Weight (inc. batteries): 765 g (1.69 lb / 26.98 oz)
Summary
The D7100 maximum resolution of 6000 x 4000 pixels (24 megapixels) is better in comparison with the EOS 6D maximum resolution of 5472 x 3648 pixels (20 megapixels). The EOS 6D is produced with larger sensor compared to the D7100: Full frame (36 x 24 mm) versus APS-C (23.5 x 15.6 mm). This is the most significant difference between these cameras because large sensor lets the camera owner to shoot photos of the more professional quality. The EOS 6D has a wider ISO range of 100-25600 in compare with ISO100–6400,Lo-1(ISO50),Hi-1(ISO12,800),Hi-2(ISO25,600) ISO range of the D7100. This ISO range let the camera owner to shoot good quality photos in low light conditions. The D7100 has more presets of white balance - 12. It gives the camera owner more control over colour. The D7100 provides more number of focus points in compare with the EOS 6D: 51 vs 11. More focus points means less risk of losing focus lock when following a moving subject.
The D7100 display is better as it has more number of screen dots 1,228,800 in comparison to 1,040,000 dots of the EOS 6D screen. The higher dot count display is better for reviewing images on your camera.
The D7100 is equipped with built-in flash. The EOS 6D is produced with built-in Wi-Fi which will help the camera owner to transfer photos wirelessly from a digital camera to a PC. The EOS 6D battery life is better in compare to the D7100 battery life. In accordance with CIPA standards the camera owner will be able to make 1090 shots with the EOS 6D and only 950 with the D7100. The D7100 weighs 765g that is 5g lighter in comparison with the weight of the EOS 6D. The EOS 6D has built-in GPS. Recording GPS data can be convenient if the camera owner is a traveller, to be able to check the image metadata and see exactly where an image was taken.
Considering the above-mentioned differences the Nikon D7100 will be the best buy. Check the lowest price on Amazon