Power arrives three ways: the built-in Sony L-Series battery plate, a locking 2-pin input rated 10–17 V (a 12–15 V supply at around 2.5 A is the recommended source), or that PVC port. Draw sits near 10 W for the monitor alone, with a 35 W ceiling when accessories pull from it.

PageOS 6 is the reason many operators stay with SmallHD. Each page is assembled from tools you choose: a framing page with guides and anamorphic de-squeeze from 0.75x to 2.5x, a focus page with adjustable focus assist, peaking and pixel zoom up to 8x, an exposure page with false colour (rainbow, ARRI-style or a custom ten-node scale), dual zebras, luma/RGB waveform with region-of-interest highlighting, vectorscope, RGB parade, histogram and EL Zone. Pages are swiped by touch or stepped through with the rear joystick, while two function buttons hold whatever the operator reaches for most.

Look management is just as thorough. A 17-point user 3D LUT can sit on any page, a 33-point calibration LUT is stored internally, and a LUT can be passed downstream on SDI, HDMI or PVC so a client screen already receives the graded image. Overlays with opacity and blink settings help match a reference frame on pickups, image capture saves stills for continuity, and flip and rotate follow the rig automatically or can be set by hand for underslung or mirrored builds.

Turned 90 degrees, the Focus 504 switches to a dedicated Vertical Mode interface with menus and scopes laid out for portrait – handy when a social cut-down is shot alongside the main 16:9 programme.

Integrated 2.4 GHz Wi-Fi links the monitor to the Fleet Control app, letting a camera department push identical LUTs, pages and firmware to several SmallHD units before call time. The same radio is the route for wireless camera control of supported ARRI, RED, Canon and Sony bodies; SmallHD is enabling it through upcoming firmware, with licences sold separately per camera system. Wi-Fi here handles control and configuration, not video transmission.

Mechanically, the anodised aluminium unibody carries four 1/4"-20 threads with ARRI locating pins on the top, bottom and both sides, so the screen can sit on a gimbal handle, a cage side or a top handle without twisting loose. The rated operating range runs from 0 °C to about 40 °C.

For a production house the business case is straightforward. The SmallHD Focus 504 replaces a converter, powers small accessories, shares a LUT pipeline with larger SmallHD screens and can gain camera control later without new hardware. It does not record, which keeps it lean for gimbal, documentary, ENG and second-unit work. When specifying the kit, we can advise on locking USB-C cables, L-Series batteries, the matching sunhood and the right camera-control licences for the bodies you run.