By Ked · June 2026
June 2026
This is the closest the lineup gets to a genuine head-to-head, because the Leica Q3 and the Leica SL3 share the same heart: a 60-megapixel full-frame sensor, phase-detect autofocus, and in-body stabilization. Image quality is not the deciding factor here. The real question is simpler and more personal: do you want one fixed lens in a compact body, or a full interchangeable system?
The Q3 puts that 60MP sensor behind a permanently mounted Summilux 28mm f/1.7. You never choose a lens and you never carry a bag, you get one superb wide-angle in a smaller body. Built-in crop modes (35mm, 50mm, and beyond) let you reframe from the 60MP file, which takes some of the sting out of the single focal length. And because it is a complete camera in one purchase, the Q3 is the simpler and usually cheaper way to get to 60 megapixels of Leica full-frame. It is the choice for travel, street, and everyday carry.
The SL3 takes the same resolution and opens it up to the whole L-mount: Leica SL lenses plus Sigma and Panasonic, and Leica M and R glass via adapters (see what lenses fit the SL). That flexibility costs more and weighs more, the body alone is pricier than a Q3 and you still buy lenses, but it grows with you from wide to telephoto, fast primes, and your existing M collection. It is the choice when one focal length will never be enough.
On paper the two are closely matched: both record up to 8K at 30p, both offer the same C8K and C4K cinema frame sizes, and both shoot 4K at 60p in 4:2:2 10-bit and Full HD up to 120p for slow motion. The SL3's real video advantages are about sustained, professional recording rather than resolution: it has a CFexpress Type B slot for high-bitrate clips and broader internal capture, where the Q3 leans harder on its SD card and records internal ProRes only at Full HD. The decisive difference, though, is lenses: the Q3 is locked to its fixed 28mm, so every shot is wide, while the SL3 films at any focal length and takes cine, wide, or telephoto glass. If video is your main use, the 24MP SL3-S is more video-focused than either of these, but between the two 60MP cameras the SL3 is the more flexible video tool, almost entirely because it changes lenses.
Since the image quality is essentially the same, the decision is about how you want to shoot and what you want to spend:
Put plainly: the Q3 is the finished package, the SL3 is the foundation of a kit. Decide whether you want a system before you compare anything else. If you are weighing the broader SL line, see the SL bodies compared; for the Q family, the Q series compared.