I would have liked more control over Trigger 
    1. A remote control button (hopefully discrete access is coming) will help 
    provide better control over the trigger output.
    
    
The 
    SDI card, which remained the same since the original iScan HD, has now been 
    superseded by a new, but as yet unreleased, user-installed board. This new 
    board provides not only two SDI inputs, but also supports HD-SDI. SDI 
    originally served the processor industry in order to bridge the gap between 
    the digital nature of DVDs and the poor analog outputs they had. SDI allowed 
    people to bypass the analog stage of both processor and DVD player and 
    provide a fully digital means of transferring the data up until the display.
	
    This was before the days of HDMI and HDCP copyright protection. SDI was a 
    broadcasting and post production standard and therefore incurred quite a bit 
    of a cost for modifying DVD players to support it.
	
	These days, regular SDI 
    is not as critical, because HDMI supports passing-through SDTV. This means 
    only those consumers requiring analog (the CRT projector folks) or unencrypted 
    digital sources still need SDI. HD-SDI is an even more complex mod to Blu-ray 
    and HD-DVD players, and I suspect its users will be fairly scant.
    The VP50Pro also adds THX certification, which 
    means it underwent a rigorous testing and verification phase at THX labs 
    (more details can be found 
	here). 
    I'm not really sure that this has any significant impact on VP50Pro's 
    customer base, but it certainly doesn't hurt anyone to have the THX logo on 
    any of their equipment.
    I'm not one to use a video processor as a 
    sound switch. Previous units did have audio issues, such as clicks and short 
    cutouts. During my testing, I did not have any audio issues, but I cannot 
    categorically state that all audio issues are gone.
    
    
The 
    VP50Pro implements the same Panorama Non-Linear-Stretch (NLS) option that 
	the VP50 and 
    VP30 have. NLS is a very difficult algorithm to achieve properly, and I think this 
    particular one needs a lot more work.
	
	For one, I would like the Panorama 
    option to be remembered when selecting an aspect ratio (per input). It 
    should also be applicable horizontally or vertically. Say I have a 
    2.35:1 movie playing on my 16:9 plasma screen. I should have the option of 
    using a panorama style feature that will prevent me from having to zoom in 
    or risk burn-in on 25% of my non-used pixels. The current implementation 
    results in way too much deformation around the sides of the screen, causing the 
    image to become too distorted and stretched. I would have liked at least one 
    more option: to zoom in slightly and reduce the level of distortion around 
    the edges at the expense of cropping the top and bottom of the image. 
    Interestingly, the overscan and cropping controls don't really cause the NLS 
    to change parameters, so you can't really change how the algorithm works. I 
    would really like for ABT to revisit this feature and improve it 
    dramatically.
    Some of the test patterns in use 
    on the VP50Pro are my designs. As with all other ABT units, the test patterns 
    are at least two steps ahead of any other device out there (if I do say so 
	myself). They are they 
    pixel perfect and serve to check and verify almost every display feature 
    possible. However, for sharpness, I would like a simple black/white line pattern 
    against a gray background to ensure screen sharpness is optimal. Turning on 
    and switching test patterns is a real treat and could not be implemented any 
    better. Why can't everyone have this range and bulk of useful test patterns?
    The unit is clearly oriented towards digital 
    audio inputs. There are two sets of digital (SPDIF/coax) inputs, four HDMI inputs 
	(they can carry sound), but only one set of analog audio inputs (although analog audio is becoming quite rare these days).
    The VP50Pro carries the Imaging Science 
    Foundation (ISF)
	CCC (Certified Calibration Controls) logo. This means that ABT will 
    release support features which will let ISF-certified calibrators better 
    control the unit. Initially, this means support for ISF day/night profiles 
    that will let you have control over daytime calibration (lots of ambient 
    light) vs. night time calibration (little or no ambient light). It also 
    hints at the possibility that ABT will add more calibration options than 
    currently offered.
    Conclusions
    The Anchor Bay Technologies DVDO Iscan VP50Pro 
	Video Processor is not a dramatic leap from the 
    VP50, but an evolutionary step. ABT clearly has more features in mind for 
    the VP50Pro, but as it stands today, not everyone really needs all the 
    features that it adds. I would state that existing VP50 users might want to 
    wait until the full feature set of the VP50Pro is announced before 
    upgrading (unless you come by a good upgrade opportunity).
    New purchasers should not hesitate to go with 
    the VP50Pro. It only has benefits when compared to the VP50 and 
    is clearly a big step in the right direction.
    I think Anchor Bay can be proud of this 
    unit, but should really revisit some of the features left over from previous 
    units and consider improving or upgrading them as well.
    
    - Ofer LaOr -
     
    Mr. LaOr is Editor of Hometheater.Co.Il, a Hi-Fi 
    magazine published in Israel. He is also the moderator for the AVS Forum 
    Video Processing section.