Following the excellent Leica Q compact camera, we wondered how long it would be before Leica unveiled a full-frame mirrorless system with interchangeable lenses. Well, wait no more - that time is now, with the Leica SL (Typ 601) officially unveiled at a press conference at the company's HQ in Wetzlar, Germany.

The Leica SL is an all-new camera, complete with - you guessed it - SL mount lenses to match with that 24-megapixel full-frame sensor at the camera's core.

In tandem with the body, the first three lenses for the system were announced: a 24-90mm f/2.8-4 (available at launch); 90-280mm f/2.8-4 (Q2 2016); and a 50mm f/1.4 (Q4 2016). However, all lenses for the existing Leica T camera can be used without an adapter, while adapters for S, M and R systems will also be made available, so there's a wider range of optics to join the line-up from day one.

Being a mirrorless system, Leica has had to invest heavily in an electronic viewfinder (EVF), as no mirrorbox means no optical viewfinder (and in moving away from the old style, a rangefinder wouldn't befit the SL).

Specs wise the Leica SL's "EyeRes" EVF offers a whopping 4.4-million pixels of resolution, putting it head and shoulders above similar competitors. It's also said to offer "magnification reminiscent of a medium format camera" for an ultra large image - although we're yet to query exactly what that means (we'll be seeing the camera following the press conference for further detailed information).

Leicaleica goes mirrorless leica sl compact system delivers 24 megapixel full frame sensor image 3

To the rear the Leica SL utilises a 2.95-inch LCD screen, with a 170-degree angle of view. It's a touchscreen too, should you want to tap to focus rather than using the physical toggle control.

With the Maestro II processor on board the Leica SL is said to offer a 2GB buffer, translating into shooting at 11 frames per second or even capturing 4K video at 30fps (or Cine4K at 24fps). Not that you have to record in 4K: the SL can also capture Full HD at up to 120fps.

In typical Leica style the SL is a robust bit of kit. Its aluminium body is chunky yet durable, including dust- and weather-seals to keep those optics and internals free from gunk and grime.

Also in typical Leica fashion the SL is far from a budget buy. Its body only price will be £5,050 when it goes on sale from 16 November this year. The 24-90mm f/2.8-4 adds a further £3,150 to the price tag. Yes, our mouths remain wide open too (partly because we're enamoured, partly because our bank balance needs a few extra zeroes).

[Correction: the original article stated that the Leica SL has a tilt-angle screen. This is incorrect, the screen is fixed to the rear. The 170-degrees refereced refers to the angle of view]