Optoma HD20 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 66 Old 08-12-09, 08:35 AM Thread Starter
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Optoma HD20

i have made the jump from 720p to 1080p and bought the hd20 to replace my the optoma hd65 i have.

delivery was received this morning so i hastily set it up to my 1080i source.
i took some pics with the projector set to the default reference and some ambient light present.







the reference setting is supposed to be as close to D65 as posssible. i'll test that as a starting point with a colorimeter when night falls.
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post #2 of 66 Old 08-12-09, 03:54 PM Thread Starter
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Re: Optoma HD20

i was asked by a member in the uk to try and compare performance of my old and new projector

the pics are not the best...

HD20 on the left, HD65 on the right.

the HD65 has less than 50hrs on its current bulb.




firstly a comparison of the hd20 on reference default and the hd65 at my own calibrated setting.

note that the contrast/brilliant color on the hd65 had to be reduced to achieve a calibration i was happy with, and to remove the artifacts i use to see in bright scenes.












in the next set the HD20 was left at reference but the hd65 setting was changed to bright default.







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post #3 of 66 Old 08-12-09, 06:50 PM
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Re: Optoma HD20

The HD20 screenshots look very good and very natural, particularly for the factory default settings..
Optoma has obviously stabilised the colour balance now in that model..

The HD65 on the other hand has a very exaggerated colour scale out of the box, and it's well known that it takes some 200 hours for it to stabilise..
From my own experience with the HD65, I wasn't able to get anywhere near the correct colour balance until 150 hrs of running.
Now it's at nearly 200 hrs,.and the colour balance looks excellent..

Whilst screenshots comparisons are interesting, they don't really give a true picture unless both projectors have been professionally calibrated..

I would be interested to hear of your opinion about the difference in the definition between the two..bearing in mind that the HD65 is 720p. and the HD20 is 1080p..

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post #4 of 66 Old 08-13-09, 05:22 PM Thread Starter
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Re: Optoma HD20

The biggest difference are whiter whites and image clarity. blacks are about the same.

i am able to sit much closer now without noticing SDE. the other point of note is that the grey ramp is smooth out the box unlike the hd65.

IMO the move up to 1080p was definitely worth the outlay.
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post #5 of 66 Old 08-13-09, 06:54 PM
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Re: Optoma HD20

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custard wrote: View Post
i am able to sit much closer now without noticing SDE. the other point of note is that the grey ramp is smooth out the box unlike the hd65.

IMO the move up to 1080p was definitely worth the outlay.
Yeah..that was one thing I don't like about the HD65..You can't get an even grey ramp pattern..no matter what you set the contrast and brightness to..
It doesn't seem to affect the image though..

The HD20 sounds like a nice entry level 1080p projector..

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post #6 of 66 Old 08-15-09, 04:48 PM Thread Starter
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Re: Optoma HD20

using PS3 media server i projected some 1920x1080 stills. camera was set on custom white balance (still not exact though to what i see in person).
the white side wall reflections are a problem for me which is why the projection wall is grey. i have partially calibrated the PJ.

hope the pics are better! photobucket downsizing of images is a bit of a problem.
















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post #7 of 66 Old 08-15-09, 08:02 PM
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Re: Optoma HD20

Very nice custard...
Are these still out of the box settings?

I would strongly recommend that you blackout as much as possible..around the screen perimeter, and along the sidewalls and ceiling, out from the front of the screen..similar to what Al Briscoe did..
This makes a huge difference to the perceived contrast..

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post #8 of 66 Old 08-16-09, 01:48 AM Thread Starter
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Re: Optoma HD20

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Very nice custard...
Are these still out of the box settings?

I would strongly recommend that you blackout as much as possible..around the screen perimeter, and along the sidewalls and ceiling, out from the front of the screen..similar to what Al Briscoe did..
This makes a huge difference to the perceived contrast..
i have partially calibrated as the reference setting was abit on the cold side.

you'll have to tell the missus that i need to paint/add a black border to her lounge wall and add curtains or darken the side walls.
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post #9 of 66 Old 08-16-09, 06:52 PM
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Re: Optoma HD20

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you'll have to tell the missus that i need to paint/add a black border to her lounge wall and add curtains or darken the side walls.
Oh..I see! That's a pity..
Maybe some of this!!

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post #10 of 66 Old 08-17-09, 05:59 PM Thread Starter
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Re: Optoma HD20

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Oh..I see! That's a pity..
Maybe some of this!!
well has not helped me so maybe will work instead.

heres the calibration i have acheived so far. the color gamut is the one that is proving difficult.























the settings i have with 37 hours on the lamp.
mode: user
contrast: 47
brightness: 38
color: 53
tint: 46
sharpness: 8
noise reduction: 0
gamma: standard
curve type: 1
offset: -2
color temp: warm
red gain: 5
green gain: 0
blue gain: -5
red bias: -1
green bias: 0
blue bias: 0
lamp bright mode: off
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