Best mirrorless camera under $600 in 2023

The most considerable features of mirrorless camera are AF capabilities, stabilization, sensor size, which is most significant factor contribute to photo quality. Compared to smartphone, mirrorless camera has larger sensor, which let more light in, and you have a wide choice of lenses with far superior optics. sensor resolution is not important factor as sensor size, and smartphone always like claiming their large pixel for marketing purpose.

Mirrorless camera have taken over DSLR for some reasons. While DSLRs give photographers a direct optical view through the lens using a reflex mirror, they're bulkier than mirrorless models. On top of that, the mirror jumps out of the way when you take a shot, blocking your view of the decisive moment. DSLRs have also traditionally delivered faster autofocus than mirrorless cameras via dedicated phase-detect sensors, but even that advantage is disappearing.

Most mirrorless cameras now have phase-detect pixels directly on the sensor, giving you autofocus that's nearly as fast and accurate as DSLRs. At the same time, they also use contrast-detect AF that processes the image as a whole, giving you the benefit of AI-powered features like face detection and object tracking. And many mirrorless models offer blackout-free shooting with the electronic shutter.

The electronic viewfinders (EVFs) used in place of optical viewfinders on mirrorless cameras are better than ever. Most medium- and high-end cameras pack at least 2.4 million dot LCD models, and many have even higher-resolution and clearer OLED EVFs. Unlike an optical viewfinder, an EVF shows exactly what the final image will look like. 

Video is more important than ever. Most great cameras deliver at least 4K at 30 frames per second, but some models now offer 4K at up to 120p, with 6K and even 8K resolution. If you need professional-looking results, choose a camera with 10-bit or even RAW capability, along with log profiles to maximize dynamic range.

If you're buying a mirrorless or DSLR camera because of video and decent photos are just a bonus, then you'll have different needs. For vlogging, you probably want a selfie-type flip-out rear screen -- an item that's found on models like Canon's EOS R/RP and the Panasonic GH5/GH5s.

In-body stabilization is another important option for video and low-light photography. You’ll also want to consider the electronic viewfinder (EVF) specs. High resolutions and refresh rates make judging shots easier.

Panasonic LUMIX G100 can shoot 4K video at 30 fps (cropped 1.47x), though 1080p is limited to 60 fps. The G100 has a 3.68-million dot EVF and 10 fps shooting speeds. Other features include a fully-articulating display, and 5-axis hybrid image stabilization. I found link with cheaper price and better warranty.

Olympus E-M10 mark IV offers the best mix of photography and video features with built-in five-axis stabilization. It’s portable and lightweight for travel, and the lenses are compact and affordable. I found link with cheaper price and better warranty.