
Sony Alpha a6600
Score: 88/100
OM SYSTEM Olympus OM
Score: 92/100Rankings

The OM-1 Mark II is OM System's flagship Micro Four Thirds camera, pairing a stacked 20.4 MP sensor with the TruePic X processor to deliver ultra-fast 120 fps burst shooting, advanced AI autofocus, and specialized astrophotography features, all within a rugged, weather-sealed body.

The Sony Alpha A6600 pairs a 24.2 MP APS-C sensor with a fast 425-point hybrid AF system, 5-axis IBIS and excellent battery life in a weather-sealed body. It offers strong still-image performance and solid 4K video, making it a versatile hybrid shooter.
| Attribute | ![]() | ![]() |
|---|---|---|
24.2 MPbest | 20.4 MP | |
720 shotsbest | 520 shots | |
102,400 ISObest | 102,400 ISObest | |
| ↓ lower better | 503 gbest | 511 g |
425 points | 1,053 pointsbest | |
30 fps | 60 fpsbest | |
2,360,000 dots | 5,760,000 dotsbest | |
3 inchesbest | 3 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Sensor & Image(3) | ||
Effective Megapixels (MP) | 24.2 MP | 20.4 MP |
Sensor Size | APS-C | Four Thirds |
Image Processor | BIONZ X | TruePic X |
Autofocus(1) | ||
Autofocus Points (points) | 425 points | 1053 points |
Battery & Power(2) | ||
Battery Life (CIPA) (shots) | 720 shots | 520 shots |
Weight (g) | 503 g | 511 g |
Video(1) | ||
4K Frame Rate (fps) | 30 fps | 60 fps |
Display(2) | ||
LCD Resolution (pixels) | 921600 pixels | 1620000 pixels |
EVF Resolution (dots) | 2360000 dots | 5760000 dots |
Storage(1) | ||
Memory Card Slot Type | SD | Dual SD |


Products in the top-left offer the best value (high score, low price).

Professional reviewers praise the A6600 for its lightning-fast autofocus, effective IBIS and long battery, but note the lack of dual card slots and 4K 60p as drawbacks.
Everyday users rave about eye-AF performance, battery endurance and the versatile kit lens, while complaining about the single SD slot and occasional overheating.

Professional reviewers, such as Live Science, were highly impressed with the OM-1 Mark II, highlighting its unprecedented 120 fps burst capability, specialized Starry Sky AF, and the innovative Live Composite mode. They consider it on par with many full-frame flagship cameras in speed and handling, though they note the modest 20.4 MP resolution and some ergonomic quirks as drawbacks.
Everyday users praise the camera's lightning-fast shooting, effective image stabilization, and the astrophotography-focused features like Starry Sky AF and Live Composite. Common criticisms revolve around low-light noise at higher ISOs, the hard-to-press flush buttons, the left-side power switch, and the limited selection of fast telephoto lenses for the MFT system.
“World-leading 0.02 sec autofocus with Real-time Eye AF and tracking”

“Battery lasts forever, perfect for travel vlogging”

“Single SD slot is a deal-breaker for pro work”

