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Use the PORTKEYS BM5IV 5.5" HDMI/SDI Touchscreen Monitor to monitor your image and focus accurately, no matter if you're shooting on location or in the studio. This ultrabright 2000 cd/m² onboard monitor features a wide color gamut, a durable aluminum build, and both HDMI and 3G-SDI video inputs and outputs. It supports HDMI/SDI signal conversion and can output 3D LUTs via its SDI output port. Wired control is available for select RED, Sony, Blackmagic Design, Canon, Panasonic, and Z CAM cameras, as well as the Tilta Nucleus-M wireless lens motors.
Use the PORTKEYS BM5IV 5.5" HDMI/SDI Touchscreen Monitor to monitor your image and focus accurately, no matter if you're shooting on location or in the studio. This ultrabright 2000 cd/m² onboard monitor features a wide color gamut, a durable aluminum build, and both HDMI and 3G-SDI video inputs and outputs. It supports HDMI/SDI signal conversion and can output 3D LUTs via its SDI output port. Wired control is available for select RED, Sony, Blackmagic Design, Canon, Panasonic, and Z CAM cameras, as well as the Tilta Nucleus-M wireless lens motors.
Firmware Update V4
The V4 firmware update adds a plethora of new functionalities to the BM5 interface for more intuitive image control and connectivity.
In the color category, the update adds a Before LUT Detection option in the Log Stops feature, an on-screen display of LUT files, separate switches for color calibration data, and a color bar to the Log Stops UI.
Additional control updates include an image flip function on the Function menu, dynamic range control in settings, an image settings category, another signal source input to the monitoring category, an F-key preset page, brightness and fan adjustment, input power selection, and transparency options for the guide box.
Professional-grade monitoring tools also received an upgrade with adjustable length and thickness options, new color options, a false color preset, edits to the Anamorphic image configurations, and an RGB histogram overlay.
Control is expanded for Sony cameras with the update. Shutter angle and shutter speed switches can be performed with the Sony FX3, FX30, and FX2. Touch Focus Frame and Touch Focus Tracking Frame can be displayed from Sony cameras connected to the monitor via USB-C. USB-C control can be facilitated from the monitor for the Sony a7V camera. White balance and color temperature control can be adjusted for all compatible Sony cameras.
Other camera brands have also been given a boost. Automatic connection can be facilitated with RED DSMC2 cameras. Canon EOS R5 II and R6 III cameras can be controlled via USB-C. The Panasonic GH7 has been added to the list of wired camera control compatibility.
Flexible Color Controls
The BM5IV uses three color gamuts to properly calibrate your image: 100% REC.709, 85% P3-DCI, and 85% P3-D65. You can manually select your Log mode, toggle Log false color, and select your own custom false color from 77 colors and 15 different segments. The monitor is factory calibrated with the option for users to create a 3D calibration LUT and an X-Rite color probe.
CINEFORM OS
CINEFORM OS powers the monitor and allows you to configure settings to suit your workflow. Import two sets of custom color calibration files, create seven custom control pages, and save it all to the included micro-USB drive for import to another monitor and streamline your workflow.
Dual-Screen Monitoring
When taking in multiple camera signals via the HDMI and SDI input ports, you can select different dual-screen monitoring configurations to view both images simultaneously. Choose between horizontal to vertical crop, picture-in-picture, dual vertical, dual horizontal, and vertical/horizontal split views.
Connectivity
This upgraded BM5IV monitor features the same HDMI input, SDI input, and SDI output ports found on the previous model with the addition of an HDMI output, allowing you to convert signals with ease. The HDMI ports can support up to 4K60 video, while the SDI ports can support up to 1080p60 video. A USB-A port helps facilitate firmware updates and uploads 3D LUTs to the monitor.
Wired Camera & Motor Control
A micro-USB remote connection facilitates camera control with select camera models from RED, Sony, Blackmagic Design, Canon, Panasonic, and Z CAM using separately available cables. The BM5IV can also be used in tandem with your Tilta Nucleus N/M wireless focus system using its UART port for calibration and limit setting.
Multiple Power Options
Use the 4-pin interface and included D-Tap cable to connect compatible power sources directly to the monitor. A built-in NP-F battery plate supports compatible batteries.
Robust Design
The monitor is constructed of durable aluminum alloy to withstand the rigors of production. The integrated fan can be set to switch to its lowest setting once the recording is toggled to minimize audio distortion.
I don't know what to say. I was very excited for the price/features, but it has some major flaws that are hard to miss.
PROS:
Good build quality
Bright
The Horizontal/Vertical crop on the same page is a great feature
Good exposure/focus tools
CONS:
This monitor is loud; you can control the fan speed, but I don't know what happens with heat dissipation, and the max setting is very loud.
UI is not as intuitive or responsive as SmallHD.
I had some trouble with the HDMI out. I don't know if it is my unit, but it doesn't let me select the output, and it just seems overly complicated.
And the worst one for me, I spent the first day making custom pages, just as I would on a SmallHD, an exposure page, a focus page, h/v crop, etc. Only to arrive at the location, and when powering the unit, all custom pages are deleted. And even then, after customizing it again mid-shooting, I turned it off, and it deleted my custom pages again. Absolutely insane.
Maybe it's bad luck, but guess is time to go back to the all reliable SmallHD one more time. You pay what you pay, sadly...
Does not come with P-tap cable
By Vincent
Rated 1 out of 5
Date: 2025-02-18
Does not include a p-tap cable despite saying it does.
See any errors on this page?
Can the Portkeys BM5 IV add a LUT to the HDMI ...
Can the Portkeys BM5 IV add a LUT to the HDMI out?
Asked by: Ariel
The PORTKEYS BM5IV 5.5" HDMI/SDI Touchscreen Monitor is not able to add a LUT to the HDMI output, only the SDI output. The PORTKEYS LH7P 7" High-Bright Touchscreen Monitor with Wireless Control (Black), BH #POLH7PB, would be an option that can apply a LUT to the HDMI output.
Answered by: Tim Z
Date published: 2025-03-03
How is this monitor wired to a FX3 is it via usb ...
How is this monitor wired to a FX3 is it via usb c or is it with the multi port?
Asked by: Sigurður
The PORTKEYS BM5IV 5.5" HDMI/SDI Touchscreen Monitor connects to your Sony FX3 with the HDMI.
Answered by: Jonathan S
Date published: 2024-11-26
A customer said his monitor did not come with a ...
A customer said his monitor did not come with a D-Tap to 4-Pin Aviation Power Cable. Is this true? Items included says it does.
Asked by: Robert
It is listed that the PORTKEYS BM5IV 5.5" HDMI/SDI Touchscreen Monitor does come with a D-Tap to 4-Pin Aviation Power Cable.
Answered by: Jonathan S
Date published: 2025-08-24
Does this monitor have a 2 pin lemo input for ...
Does this monitor have a 2 pin lemo input for power?
Asked by: Justin
No, the PORTKEYS BM5IV 5.5" HDMI/SDI Touchscreen Monitor uses an L series NPF battery or its Aviation 4-Pin (24 VDC) Input for powering only.
Answered by: Jonathan S
Date published: 2025-02-17
Can this monitor display un-pillarboxed, 1.5x ...
Can this monitor display un-pillarboxed, 1.5x de-squeezed 4:3 material via HDMI from GH5, as full-width letterboxed 2.00:1?
Asked by: Alexander
PORTKEYS BM5IV 5.5" HDMI/SDI Touchscreen Monitor does offer 1.5x anamorphic de-squeeze with a full width option.
Answered by: John W
Date published: 2025-01-22
How does the wired connection work on Komodo x ...
How does the wired connection work on Komodo x for camera controls?
Asked by: Jordan
Both the camera and the PORTKEYS BM5IV 5.5” HDMI/SDI Touchscreen Monitor have Wi-Fi support and connect over Wi-Fi.
See this link from Portkeys for the functions controlled:
https://bhpho.to/4gpMFvE
Answered by: Chris H
Date published: 2024-12-09
Does this monitor support touch focus on the ...
Does this monitor support touch focus on the Canon C400?
Asked by: Derek
No, the PORTKEYS BM5IV 5.5" HDMI/SDI Touchscreen Monitor cannot control the Canon EOS C400 6K Full-Frame Digital Cinema Camera (B&H # CAC400RF).
Answered by: Marvin C
Date published: 2025-10-05
Will this support touch focus on the canon R5C in ...
Will this support touch focus on the canon R5C in video mode? I see that it will for the R5, but nothing for the R5C in video
Asked by: Ryan
At this time, PORTKEYS does not state camera control compatibility of the PORTKEYS BM5IV 5.5" HDMI/SDI Touchscreen Monitor with the Canon EOS R5 C Mirrorless Cinema Camera.
