Portkeys LS7P vs BM5 IV: Which 7-Inch Monitor Fits Your Rig?

Quick answer

Choose the Portkeys LS7P if you want a larger 7-inch on-camera monitor with HDMI/SDI and a rugged aluminum body for crew-based shoots. Choose the Portkeys BM5 IV if you need a compact 5.5-inch touchscreen that stays readable in direct sun at 2,000 nits.

Screen size and rig balance

The LS7P gives you a 7-inch viewing area, which helps when you are pulling focus or framing from a shoulder rig where the monitor sits farther from your eye. The BM5 IV is a 5.5-inch touchscreen, so it takes up less space on a gimbal, compact cage, or handheld setup.

Neither monitor is supplied with a specific weight figure in the catalog, so balance depends on your rig and mounting. If your camera is already front-heavy, the smaller BM5 IV is the lower-risk starting point.

Brightness and outdoor visibility

The BM5 IV is rated at 2,000 nits, while the LS7P is rated at 1,000 nits. That is a real difference for daytime exteriors: the BM5 IV has more headroom against direct sun, while the LS7P is still a bright panel for shaded or indoor work.

High brightness can affect power draw and heat, but the catalog does not supply power-consumption figures for either model. Plan your battery or power solution based on your own shooting day, and test the monitor in the conditions you actually work in.

Connectivity and camera control

The LS7P supports HDMI and SDI, which matters if you work with broadcast or cinema cameras that output SDI. The BM5 IV is described as a compact touchscreen monitor, but the supplied catalog does not list its input types, so confirm SDI support before buying if your camera is SDI-only.

The LS7P also supports advanced wireless camera control through its MOVNORM OS. The BM5 IV's feature set is not fully detailed in the supplied facts, so treat camera-control needs as a question to verify rather than an assumption.

Build and handling

The LS7P has a full aluminum body, which suits demanding set environments and repeated transport. The BM5 IV's housing material is not specified in the catalog, so judge it by handling in person if durability is your priority.

The LS7P's larger body may need a more substantial mount or arm; the BM5 IV's compact size is easier to fit on small rigs, but the trade-off is a smaller image.

Trade-offs to weigh before you buy

• Size vs. portability: The LS7P's 7-inch screen is easier to view at a distance but takes more rig space; the BM5 IV's 5.5-inch screen is more compact but demands closer viewing. Measure your rig's available mounting space before deciding.
• Brightness vs. power planning: The BM5 IV's 2,000 nits gives more outdoor headroom than the LS7P's 1,000 nits, but the catalog does not list power draw for either model. Test battery life with your own power setup rather than assuming runtime.
• SDI and camera control: The LS7P lists HDMI/SDI and advanced wireless camera control; the BM5 IV's input and control details are not fully supplied. If you need SDI or wireless control, verify those specs on the BM5 IV before purchase.

Product facts at a glance

• Portkeys LS7P 7″ – Moniteur: 7-inch on-camera monitor with a full aluminum body, 1,000 nits, HDMI/SDI, and MOVNORM OS. The 7-inch screen and SDI input make it a better fit for crew shoots and cameras that output SDI.

  

• Portkeys BM5 IV – Moniteur: 5.5-inch touchscreen monitor with Full HD 1920 x 1080 resolution and 2,000 nits brightness. The higher brightness helps in direct sun, while the smaller screen keeps a gimbal or compact rig light.

  

Which monitor fits your rig?

Best for

• Shooters who need a larger 7-inch image and HDMI/SDI connectivity
• Crew-based sets where a rugged aluminum body and wireless camera control matter

Not for

• Gimbal or compact-rig users who prioritize low size and weight
• Direct-sun exteriors where 2,000 nits is the deciding factor