Gratical HD EVF

Welcome to the Gratical HD EVF

Bright. Sharp. Brilliant.

Over two years in the making, Zacuto brought five different engineering companies together to create the Gratical HD EVF, a new electronic viewfinder concept. Electronic viewfinders are a pivotal tool in any filmmakers bag, providing accessibility, stability, focusability and so much more. The Gratical HD EVF is a complete electronic viewfinder that incorporates the very latest in OLED and processing technology. Unlike with an optical viewfinder or standard electronic viewfinder, with Zacuto and the Gratical HD EVF, you can trust you’re seeing a realistic visualization of your final image without having to look away from the eyepiece.

This new Zacuto EVF is powered by FPGA dual core processor that can support a whole host of professional features including HDMI and SDI with simultaneous cross-conversion, Vectorscope, Waveform (3D), Histogram, LUT import and creation and much more. The processing power and sharpness of the Zacuto Gratical HD electronic viewfinder far surpasses all other EVF units on the market.

See the big picture

Micro-OLED EVF Display

The Gratical HD EVF has 5.4 million pixels on a 0.61” diagonal screen no bigger than the size of your thumbnail. This EVF supports high pixel density with unparalleled resolution, true blacks, gamma and contrast range. With Micro-OLED screens, each pixel is lit individually so that when one is turned off there is true black. This makes for a wider contrast range and more vibrant colors for a vivid, enhanced picture. And with a full display electronic viewfinder resolution of 1280×1024 you know you’re getting the best picture possible.

Micro-OLED Display
Zacuto Gratical HD EVF HDMI and SDI connections


The Gratical HD EVF includes two HDMI and two SDI ports with cross conversion from HDMI to SDI. Weather resistant covers prevent moisture or debris from getting in open ports. Physical connections include both a ¼ 20 screw hole underneath the EVF and a rosette on the side. Attach your electronic viewfinder with an arm or Zacuto Axis Mini as part of a Zacuto Next Generation Recoil Rig.

High Quality
Precision Optics

You’ll be amazed with how sharp this EVF image is. The internal field of view is just the right size so that the image is large, but not so that your eye has to roam to see the entire image at once. It features a built in -1 to +4 diopter range and Zacuto’s latest anti-fog coating formula. An auto-closing eyecup door prevents sunburn display automatically without any action by the operator.

Micro-OLED Gratical HD EVF Optics
Gratical HD EVF Camera Compatibility


The Gratical HD is compatible with every camera on the market today including the Canon C100 and C100 Mark II, C300, and C300 Mark II, C500, RED Epic, Scarlet, One, Dragon, Sony FS7, F5, F55, DSLRs, ARRI Amira, Alexa, AJA Cion, all Blackmagic cameras and many more.

The Gratical HD can be used in place of any other electronic viewfinder including the Cineroid EVF 4C, RED Bomb, LCDVF, Alphatron EVF-035W-3G, Sony DVF-EL100, Sony DVF-L350, SmallHD DP4, Sidefinder, F&V Spectra HD4, Panasonic DMW-LVF1, ARRI EVF-1 and many more.

What industry experts are saying

Gratical HD Expert Users

Next Generation Recoil Rigs & the Gratical HD EVF:
the perfect match

Zacuto Next Generation Recoil Rig with Gratical HD EVF

Zacuto’s universal Next Generation Recoil Rigs are all about BALANCE! You cannot shoot with a rig that is not balanced, you’ll be fighting fatigue on long shoots. Whether you’re shooting TV, film, documentary, wedding or news, a balanced shoulder mounted rig will keep your shots steady and allow you to shoot the whole day.

Recoil rigs place the balance point directly over your shoulder, pushing focus and monitoring further forward, creating a lighter and shorter rig. The Gratical HD Micro-OLED EVF is the perfect addition to any Zacuto Recoil rig.


Technical Specifications

Gratical HD Micro-OLED EVF

Pricing $3100
Micro OLED
Screen Dimension Contrast Ratio Color Depth Pixel Info
0.61” Diagonal 10,000:1 24 bit RGB 2687.21 PPI
5.4 million pixels
16.7 million colors
Resolution Refresh Rate Luminance
Full Display 1280×1024 60Hz 120-250 cd/m^2
16×9 1280×720 HD
Connections HDMI HD-SDI Cross Conversion
1.4b Compliant Resolutions up to 1080p/60 HDMI to HD-SDI
Resolutions up to 1080p/60 Loop Out Independent LUT on
Loop Out output stream
Video Processing Features Custom Scaling/User Presets Vectorscope Red Line Peaking
Color Processor Waveform (3D) False Color
RGB, saturation, brightness, contrast Histogram (RGB, Luma) Frame Store Feature

Customize width, color, thresholds
Audio Meters Test Pattern (color bars & Macbeth)
LUT import and creation Eight programmable buttons
Frame Rates
23.98p, 23.98PsF, 24p, 24PsF, 25p, 25PsF, 29.97p, 29.97PsF, 30p, 30PsF, 50i, 50p, 59.94i, 60i, 60p
Power Voltage Input Compatible with LP-E6 battery
6-28V (7.8V 1800mAH LiON)
Run time – 4 hours constant run
Customize your Gratical HD EVF to fit your needs. The EVF includes 8 programmable buttons for you to set to the features you use most. Features like LUTs, scaling, color and more can all be user created and stored, or use our pre installed options. The Gratical HD truly is a complete electronic viewfinder.


Thank you for your interest in Zacuto’s Gratical HD Micro-OLED EVF. Have questions? Please contact our sales and customer service team at (312) 863 3452 or Live chat is also available during Chicago business hours.