Alphatron Electronic View Finder by TVLogic EVF-035W-3G

1395
  • Filmtools #: 22166
  • Mfr #: EVF-035W-3G
Availability
Product Features
  • LED backlit 3.54" (960x640 16:9) LCD display
  • Audio Level Meter
  • Time Code Display
  • Range Error
  • Zebra Pattern
  • Luma Zone Check
  • Focus Assist
  • Internal Colourbar + Pluge Pattern
  • HDMI-to-HDSDI Conversion Out
  • HDMI~HDMI A. Loop Through
  • SDI~SDI A. Loop Through

Availability: In stock

You Pay: $1,395.00
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The Alphatron Electronic Viewfinder (EVF) was developed and manufactured by TVLogic, a company renowned for their high-end LCD monitors. Flip up the EVF's eyepiece to reveal the LED backlit 3.54" (960x640 16:9) LCD display. The EVF features many of the professional features integrated in TVLogic monitors such as Audio Level Meter, Time Code Display, Range Error, Zebra Pattern, Luma(yメ) Zone Check, Focus Assist, Internal Colourbar + Pluge Pattern, HDMI-to-HDSDI Conversion Out, HDMI~HDMI A. Loop Through, SDI~SDI A. Loop Through, and more.

The resolution of the 3.5" Retina (iPhone) display is 960*640 as you may know. It is not only higher than the 800*480 resolution but is also a magic number for a better picture quality.

For full HD video signals, the EVF-035W-3G will use only 960*540 pixels to match the aspect ratio of 16:9. A resolution of 960*540 is exactly half of the full HD resolution which is 1920*1080. This means that the EVF-035W-3G will have the downscaling factor of 2.0 (1920/2=960, 1080/2=540).

Resolution : 960�540 (518,400 pixels)
  • Exactly ½ of the Full HD Resolution -> Perfect downscaling factor;
  • No Vertical 1 pixel line omission (see cross hatch pattern of 1080i/60 on 800*480 resolution monitor)

Alphatron calls it the "Perfect Downscaling Factor". You can see why this is important if you look at the specification of the competitors. Regardless of the size, all of the EVFs (Cineroid, Zacuto and SmallHD) have the resolution of 800*480 which has a downscaling factor of 2.4 (1920/800=2.4) horizontally and 2.25 (1080/480=2.25) vertically. When you have to downscale full HD video to match the lower resolution LCD panel, thereメs a significant difference in picture quality if the downscaling factor is an integer.

The EVF-035W-3G shows 1 out of every 2 pixels. However, if the downscaling factor is not an integer (i.e : 2.4 or 2.25), some of the horizontal and vertical pixels cannot be reproduced in a correct way. Hence, fine details, particular those for accurate focusing, cannot be reproduced. Of course itメs best if you donメt need to downscale the video from the camera. But, if you have to downscale due to the limitation of the LCD panel, it's better to have the downscaling factor of 2 rather than 2.4 or 2.25. You can verify this benefit simply by loading 1 pixel-width horizontal- or vertical lines in full HD resolution to the monitors or EVFs.