PHOTO QUALITY. This 16-megapixel mirrorless camera captured images with very good quality. Pictures were sharp, which means you can see most details and subtle patterns in the image. In low-light situations without a flash, pictures were sharp. We judged this model very good for outdoor performance, such as shooting landscapes in the daytime; very good for indoor performance, such as photographing a well-lit basketball game in a gym. And very good for low-light performance without a flash, such as capturing a birthday party. Photos taken in our low-light performance tests displayed little image noise; subjects retained most of their correct detail and color.
FLASH. The Lumix DMC-GH4 w/ 14-140mm f/3.5-5.6 ASPH. Power O.I.S. with the 14-140mm kit lens captured flash shots that were very good. In our distance test, we found the camera's flash could illuminate subjects very well, both near and far. The flash also has very good, even coverage.
LENS. It has a moderately long 10x zoom lens that can be helpful when you need to zoom in to capture your subjects. The lens also has wide-angle (28mm) capability that's useful for landscapes and group portraits, although you may notice a bit of distortion when you're shooting faces up close, for instance.
IMAGE STABILIZATION. This is an important feature with a long zoom lens; taking hand-held shots at the telephoto end of the zoom range can generally blur or soften images due to the slight movement of your hands. Shooting zoom set at 4x in well-lit scenes, this model did a good job of minimizing the effects of camera shake. In low-light settings, it performed excellently and almost never produced blurry photos. Overall, the shake reduction results from our tests were very good.
SPEED. In terms of performance, the Panasonic Lumix DMC-GH4 w/ 14-140mm f/3.5-5.6 ASPH. Power O.I.S. powers up instantly. It has a very short interval between shots, which can be important when shooting fast-moving or unpredictable subjects.
VIDEO. The Panasonic Lumix DMC-GH4 w/ 14-140mm f/3.5-5.6 ASPH. Power O.I.S. takes excellent video. It also captures 4K-UHD video at 4096 x 2160 60p. As for sound, it captures excellent audio in stereo.
ADDITIONAL COMMENTS. Like most mirrorless models, this camera does include an electronic viewfinder, which means you have flexibility when composing your photo or video; this viewfinder has excellent quality. The display also swivels; this can be helpful when shooting self-portraits or hard-to-reach shots. This mirrorless is bigger, thicker and a bit heavier than most in its class. Although this model has many features and controls, this mirrorless is bulky and heavy, which may not make it the best model if you travel a lot.
