05 November 2015, 07:22 | #1 |
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Amiga and BENQ BL912 / BL702A Monitors
I am pondering buy a new monitor to use with an Amiga @ 15khz mode - a Benq BL912 or BL702A which from what I understand, both are compatible with the Amiga using a cheap RGB to VGA adapter. I have a few questions maybe someone can clear a few things for me. Thanks!
- Do these monitors let you force the picture to display 4:3 with borders, rather than a 5:4 (which would be slightly stretched) - How good is the picture quality/scrolling for normal games? (I am not interested in funky Workbench screenmodes) - Which of these two is better for Amiga use (other than the obvious fact that one of them is larger) - Do these monitors support 50hz using DVI @30khz to get perfect scrolling with an Indivision MK2? Thanks =) |
05 November 2015, 09:04 | #2 |
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Good question. I would like to hear more about this too. I currently have a cheap lcd TV, but those square models are all quite old and have mostly bad picture quality.
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05 November 2015, 09:57 | #3 |
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The 2 monitors I mentioned are pretty recent though
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05 November 2015, 10:05 | #4 |
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I just ordered the BL912 the other day on a whim. Ordered an adapter as well. We'll see how it performs.
I'm currently using an old Dell monitor that I "nicked" from work (had been laying in a closet for three years..). Using it with my indivision mk2. |
05 November 2015, 11:12 | #5 | |
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Aspect ratio is pretty important for me, I just can't stand stretched out images! |
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05 November 2015, 11:37 | #6 |
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I guess it's a tft display. Ips would be nice. But tft can be decent. Important to me are viewing angles and deep blacks. And minimal backlight bleeding.
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05 November 2015, 13:15 | #7 |
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Amiga and BENQ BL912 / BL702A Monitors
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05 November 2015, 13:49 | #8 |
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I've had the BL702A for a while. All you get is a single VGA input, no DVI or fancy HDMI...
For the money, it's a nice solution. But if you wanna be a bit picky, it's a little annoying how the image stretches differently in different screen modes so if you adjust the monitor to nicely fill your screen in WB, once you start a game the monitor switches to 15kHz and the screen scaling changes. The monitor only remembers one setting though, so AFAIK there's no way to get a filled screen in every screen mode without manual adjustments every time... Edit: Also, what's wrong with 5:4. That IS Amigas (PAL) native aspect ratio.. not 4:3.. ;-) |
05 November 2015, 14:05 | #9 |
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05 November 2015, 15:10 | #10 |
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I don't remember having a 5:4 monitor when I had an Amiga back in the day :P
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05 November 2015, 15:11 | #11 |
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Well as long as the image stretches whilst keeping a correct aspect ratio I am fine - I don't mind if it doesn't fill the complete display.
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05 November 2015, 16:11 | #12 |
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I own BL702A.
- Do these monitors let you force the picture to display 4:3 with borders, rather than a 5:4 (which would be slightly stretched) => they stretch picture automatically (as most of LCDs these days), but I have no problem with it. Honestly if I someone would not tell me its 5:4 I did not notice it - How good is the picture quality/scrolling for normal games? (I am not interested in funky Workbench screenmodes) => perfect for scrolling, nice colors, ... just lovely picture - Which of these two is better for Amiga use (other than the obvious fact that one of them is larger) => you wont make mistake buying any of these, depends if you like smaller and lighter or bigger - Do these monitors support 50hz using DVI @30khz to get perfect scrolling with an Indivision MK2? => both monitors of course support frequency over 30 kHz, so Indivision is 100% compatible with DVI (question is why to use Indivision when RGB is perfectly shown? ;o) Personally I am thinking to buy one more BL702A and also BL912 to replace all my RGB monitors. |
05 November 2015, 18:08 | #13 |
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Fantastic reply =) thanks jack-3d
Just to be sure, is it possible to select "aspect" ratio so original 4:3 is retained ? Also, did you have to play around with settings for optimum display? Like phase settings? Last edited by Nostromo; 05 November 2015 at 18:31. |
05 November 2015, 18:27 | #14 |
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Recently I discovered a problem with my current LCD, which I didnt mentioned before: slow resolution switching. When it switches from 320x256 to 640x512, there is about 3 seconds lag when screen is black. In some games, especially latest 21st Century ones, it typically causes you to loose a life during the start of multiball session.
Please, perform a test with Slamtilt on BenQ. Run a table, switch it to Hires mode and then to Lores mode again (use keys Help and Del). How quick the change is? |
05 November 2015, 18:34 | #15 | |
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05 November 2015, 18:39 | #16 |
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Everybody keeps saying a Pal Amiga outputs 5:4. How does this work exactly? 1084s monitors were 4:3..
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05 November 2015, 19:09 | #17 | |
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(640×512 = 5:4 aspect ratio) Those in NTSC land were actually 640x400 and that isn't 4:3 either. (640×480 is 4:3). Also.. CRTs don't have fixed pixels in the sense an LCD has. They have a vertical mask and then you have a beam that draws the picture by sweeping horizontally over the screen (horizontal sweep frequency, remember? ). |
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05 November 2015, 19:28 | #18 | |
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It is only the resolution ratio which is 5:4 (320/256 = 5/4). A monitor/TV's ratio has nothing to do with resolution and everything to do with physical dimensions. |
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05 November 2015, 19:31 | #19 |
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So in the end, a 5:4 ratio screen will still look slightly stretched? Would a circle look like an ellipse on 5:4?
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05 November 2015, 21:04 | #20 | |
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In practice, these two ratios are close enough that this should be perfectly acceptable |
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