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Sony BVM E251 24.5" TRIMASTER EL OLED Critical Reference Monitor

Sony BVM E251 24.5" TRIMASTER EL OLED Critical Reference Monitor
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Sony BVM-E251 Overview

  • 1Description
  • 2Technology
  • 3Flicker Free Mode
  • 4DC Operation
  • 5Support for 4K Production
  • 6Accepts Computer Signals via HDMI
  • 7Picture Performance
  • 8Sony Display Engine
  • 9Multi-Format Signal Support
  • 10Auto White Balance
  • 11I/P Conversion Technology
  • 12Low Video Delay
  • 13Panel Calibration
  • 14Interlaced Display Mode
  • 15Picture & Picture Mode
  • 16Pixel Zoom Mode
  • 17Gamut Error Display
  • 18S-Log3 and S-Log2 EOTF
  • 192K Picture Resolution
  • 20Scan Switch
  • 21Native Scan (Pixel-To-Pixel Display)
  • 22HD Frame Capture Mode
  • 23Separate Control Unit with USB Memory Slot
  • 24Centralized Monitor-Wall Control
  • 25Character Off Button
  • 26Copy Function for Monitor Setup and Adjustment Data
  • 27+12dB Chroma UP Function
  • 28Marker Settings
  • 29Aspect Switch
  • 30Wide Variety of Functions
  • 31Status Display

The BVM E251 24.5" TRIMASTER EL OLED Critical Reference Monitor from Sony features a wide viewing angle for critical picture evaluation in the studio and on-set for professional applications such as color grading, high-end editing, broadcasting and scientific research. Sony’s leading edge Organic Light-Emitting Diode (OLED) technology and signal processing technology ensures high performance with the BVM-E171. It allows several people to evaluate the image with accuracy at the same time, increasing the monitor’s versatility in top end monitoring solutions.


Top Emission technology enhances OLED's benefits to deliver outstanding black performance, a quick response time with virtually no motion blur, and a wide color gamut. A 12-bit output digital signal processing engine provides a non-linear cubic conversion color-management system that delivers precise color reproduction, picture uniformity, gamma performance, and picture quality consistency.

Flicker Free Mode

The TRIMASTER EL OLED panel's quick response and scan-driving performance delivers remarkable picture quality with virtually no motion blur. However, there is a possibility that flicker is just visible especially when a lower frequency signal is displayed (24p, 24PsF, and 50i). To remove visible flicker, the BVM E251 is equipped with flicker-free mode.

DC Operation

The BVM E251 can be DC operated. This feature gives more flexibility and mobility to users who want the larger size screen for the on-set application.

Support for 4K Production

The BVM E251 is an HD monitor that conforms to ITU-R BT.709 color space. Responding to an increase of the demand of using an HD monitor in a 4K production, the monitor supports ITU-R BT.2020 color space and transfer matrix.

Accepts Computer Signals via HDMI

The BVM E251 accepts various computer signals input up to 1920 x 1080 through its HDMI connector. It is also equipped with Digital Cinema 2048 x 1080 signals.

Picture Performance

Sony TRIMASTER EL technology combines the ultimate performance of Sony OLED display with the TRIMASTER technology to provide the highest level of picture performance:

  • Wide viewing angle
  • Accurate Black Reproduction
  • High purity and accurate color reproduction
  • Quick response time with virtually no motion blur
  • Very high contrast ratio

Sony Display Engine

High-precision signal processing engine has been developed to fulfill the reference monitor criteria and is optimized to maximize OLED panel performance. This engine incorporates 12-bit output accuracy at each process, and provides both a high quality I/P conversion algorithm and a highly accurate color management system.

Multi-Format Signal Support

The BVM E251 monitor can accept almost any SD or HD video format, such as analog composite video, HDMI and SDI, and variable computer signals through HDMI.

Auto White Balance

The color temperature and white balance of BVM Series monitors can be automatically adjusted by the Auto White Balance function using specified color temperature probes, such as:

  • Konica Minolta: CA-210, CA-310, CS-200
  • DK-Technologies: PM5639/06
  • X-Rite: i1 (Eye-One) Pro and i1Pro2
  • Photo Research: PR-655, PR-670
  • Klein: K-10
  • Jeti: Specbos 1211

I/P Conversion Technology

The BVM E251 monitor uses I/P conversion technique that keeps artifacts that are often seen in flat panel displays to a minimum such as edge jaggedness, conversion errors, and more.

Low Video Delay

The BVM E251 display engine ensures a picture delay that is less than one field.

Panel Calibration

Every BVM E251 monitor is carefully calibrated at the factory on an individual basis, providing a high level of accuracy and stability for characteristics such as gamma and uniformity.

Interlaced Display Mode

The monitor reproduces interlaced signals, emulating CRT monitors.

Picture & Picture Mode

The Picture & Picture function of the BVM E251 allows simultaneous display of two input signals on the monitor's screen. This function is extremely convenient for making instant adjustments to two input sources. Four modes are available to provide users with enhanced operational flexibility: Side by Side, Wipe, Butterfly, and Blending.

Pixel Zoom Mode

A selected area of the displayed picture can be enlarged on a pixel basis, up to eight times in size both vertically and horizontally.

Gamut Error Display

The monitor incorporates a Gamut Error Display function that detects irregular signal input.

S-Log3 and S-Log2 EOTF

The monitor incorporates EOTF tables to reproduce images captured using S-Log3 and S-Log2. S-Log3 and S-Log2 are techniques used in Sony's digital cinematography cameras that allows the full latitude of the camera sensor to be maintained throughout the production chain.

2K Picture Resolution

The 2048 Image Slide function of the BVM E251 allows 2K resolution (2048 x 1080p) images to be mapped, pixel-to-pixel, on the Full HD (1920 x 1080p) panel without picture degradation. The monitor is equipped with a slide function that allows the display of missing pixels in native mode from the left and right part of the picture.

Scan Switch

The Scan Switch function allows switching between under scan (-3%), normal scan (0%), and over scan (5%).

Native Scan (Pixel-To-Pixel Display)

The Native Scan function is a unique display mode that reproduces images without changing the input signal's pixel count.

HD Frame Capture Mode

The HD Frame Capture function of the BVM Series allows a picture frame from the 3G-SDI and HD-SDI input to be captured and saved as a picture file on a USB memory media (BKM-17R) or a Memory Stick media (BKM-16R) (both sold separately). This picture file can be used as a reference for various purposes, for example, for picture-tone adjustments between past images and for camera-framing adjustments.

Separate Control Unit with USB Memory Slot

A separate BKM-17R Monitor Control Unit is available for the BVM E251. It is equipped with a USB Memory slot enables users to download and save all monitor set-ups such as input channel configuration, control preset adjustments, white balance settings and maintenance parameters.

Centralized Monitor-Wall Control

The BVM Series monitor and the BKM-17R Monitor Control Unit are equipped with an Ethernet port, allowing remote control of display parameters across a standard Ethernet connection. One BKM-17R Monitor Control Unit can control up to 32 BVM monitors.

Character Off Button

To facilitate parameter adjustments, the On-Screen Menu indication can be taken off the screen, while in Menu mode. The On-Screen Menu indication can be toggled on or off with a simple press of a button on the BKM-17R's front panel.

Copy Function for Monitor Setup and Adjustment Data

The optional BKM-17R Monitor Control Unit includes a USB Memory slot to save and load monitor configuration and adjustment settings. This is useful for multiple monitor systems, allowing the transfer of one monitor's setup and adjustment data to another. This data can also be transferred via the BVM's Ethernet connection.

+12dB Chroma UP Function

A Chroma UP button located on the front panel of the BKM-17R allows the chroma level to be boosted by +12dB. This is a convenient feature for adjusting camera white balance with a higher degree of accuracy.

Marker Settings

BVM Series monitors can display various markers, including an aspect marker, safe area marker and center marker. In addition to this flexible selection of marker types, detailed display settings of each marker are offered. For example, the color, brightness, horizontal/vertical position and width of aspect markers can all be controlled, while the height and width of safe area markers can be adjusted.

Aspect Switch

The aspect ratio can be switched between 4:3, 16:9, 2.39:1 and 1.896:1 depending on the input signal.

Wide Variety of Functions

The user has a wide variety of over 40 functions to choose from. Each of these can be assigned to any of the 16 function buttons (F1 to F16) on the BKM-17R controller. Press ENTER to display the F1 to F8 (or F9 to F16) button assignment on screen.

Status Display

Simply assign STATUS to one of the function buttons (F1 to F16) on the BKM-17R Monitor Control Unit. The user can instantly grasp the whole monitor status and configurations without having to search through menus.
UPC: 027242902824

Sony BVM-E251 Specs

PanelOLED panel
Picture Size24.5" (622 mm)
Effective Picture Size (H x V)21.5 x 12.1" (546.1 x 307.3 mm)
Resolution (H x V)1920 x 1080p (Full HD)
Aspect Ratio16:9
Pixel Efficiency99.99%
Panel DriveRGB 10-bit
Panel Frame Rate48 Hz / 50 Hz / 60 Hz (48 Hz and 60 Hz are also compatible with 1/1.001 frame rates)
Viewing Angle89°/89°/89°/89° (typical) (up/down/left/right contrast >10:1)
Luminance100 cd/m2 (preset1 to preset5 at EOTF 2.4)
48 cd/m2 (preset (DCI)) (1.0 Vp-p reference signal, 100% white signal input)
Color TemperatureD55, D61, D65, D93, DCI, DCI XYZ and user 1-5 (5000K to 10,000K adjustable)
Color SpaceITU-R BT.2020*2, ITU-R BT.709, EBU, SMPTE-C, DCI-P3*2, BVM E251 Native, S-Gamut/S-Gamut3, S-Gamut3.cine
TransmissionMatrix: ITU-R BT.2020 (Non-constant luminance is supported), ITU-R BT.709, ITU-R BT.601, SMPTE 240M
EOTF2.2, 2.4, 2.6, CRT, S-Log3 (SDR), S-Log2 (SDR)
InputSDI: 2 x BNC
HDMI: 1 x (HDCP correspondence, deep color correspondence)
Composite Video: 1 x BNC
Parallel Remote: 1 x RJ45 modular connector 8-pin (Pin-assignable)
Serial Remote (LAN): 1 x Ethernet (10BASE-T/100BASE-TX), RJ45
DC Input: 1 x XLR
OutputSDI: 2 x BNC
Composite Video: 1 x BNC
12 VDC Output: 1 x Circle 4-pin (female)
Power Requirement100 to 240 VAC, 1.2 to 0.6 A, 50/60 Hz, 24 to 28 VDC, 4.5 to 3.9 A
Power ConsumptionApproximately 117 W (AC power supply)
Approximately 107 W (DC power supply)
Approximately 55 W (AC power supply)
Approximately 51 W (DC power supply) average power consumption in the default status
Operating Temperature32 to 95°F (0 to 35°C)
Recommended: 68 to 86°F (20 to 30°C)
Operating Humidity30% to 85% (no condensation)
Storage Temperature-4 to 140°F (-20 to 60°C)
Storage Humidity0% to 90%
Pressure LevelOperating, Storage, and Transport: 700 hPa to 1060 hPa
Dimensions22.7 x 16.7 x 5.8" (576 x 424 x 148 mm)
Height without Legs: 16" (408 mm)
WeightApproximately 22.6 lb (10.3 kg)
Packaging Info
Package Weight28.665 lb
Box Dimensions (LxWxH)27.2 x 21.7 x 10"

Sony BVM-E251 Reviews

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