CurtPalme.com Home Theater Forum

mike calcott · Joined: 18 May 2006 Posts: 307 Location: Australia

I am continually trying to get a sharper image, I have fitted the DD & DE boards into my Sony 1251 to give me extra convergance I have a scaler which will scale to the highest resolution and scan rate for this PJ, I have a HDFury yet I am still not convinced that I have reached the best image this Pj will produce. The tubes are minty and have only 355 hours of use, and I am using PT165 lenses. It will display a clean H pattern yet when using the dot pattern the dots although round still look a bit fuzzy to my eyes. Is the picture sharpness produced by the lens's or by the image projected from the tubes?. I have G2 as close to 4v as possible eg. 3.98v I have done astig and electronic and optical focus, but still feel that it should be a bit sharper. Does anyone have any suggestions, or am I pissing into the wind? Confused

Heywood Jablome · Joined: 12 Mar 2006 Posts: 1548

mike calcott · Joined: 18 May 2006 Posts: 307 Location: Australia

I have been running at 720p @72hz refresh which produces a better image on HDTV than HDFury, but with BLU_RAY its the reverse

Heywood Jablome · Joined: 12 Mar 2006 Posts: 1548

I'm no Sony expert, but I think when those guys DO chime in they'll say that 720p72 is too much for the 1252. 1080i72 sould lessen the bandwidth requirement and make for a sharper image, and since most BR stock is delivered in 1080i or 1080p you'll be removing a layer of scaling.

Speaking of, what scaler are you using?

mike calcott · Joined: 18 May 2006 Posts: 307 Location: Australia

The Blu-Ray image via the HDFury is still less sharp than HDTV via the scaler

Person99 · Joined: 09 Mar 2006 Posts: 4899 Location: Flower Mound, TX

Wow, 720p/72 is alot for that PJ. At the risk of sounding like an *******, a sony 1251/1271 is never going to be what anyone would call sharp.

But, have you done a great mechanical set up including spot shape, etc?

As for 720p HDTV being sharper, what content are you talking about? If it is content shot with HD Video cameras, it will be sharper than any film transfer can be. If it is actually 720p content (ABC, ESPN, etc), then that helps too as there is no scaling.

Frankly, if you want a sharp image, you are going to need another PJ.

deronmoped · Joined: 03 Nov 2006 Posts: 1154 Location: San Diego

What size screen are you using? If sharpness is more important then image size I would reduce the size of the screen. Use a smaller screen at the same sitting distance and you will see a sharper image.

Deron.

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado

ecrabb · Posted: Tue Mar 18, 2008 4:22 pm Post subject:

Mike,

Give us some more details: Screens size, material, viewing distance... sources and resolution. I know you've mentioned a few of those things before, but put them all here for the sake of discussion.

In terms of sharpness, draganm is right. In my PM to you, I mentioned to you that was one of the immediately noticeable differences between the 1271 and the G70... in-your-face sharpness... big difference. There was detail - especially background detail - tiny objects in the distance - that really popped out of wide shots on the G70 that were 'mushy' on the 1271.

Another thing you could do... So you can judge your machine against some of our 12xx's (and newer machines like a G70)... If you could take a few screen shots - Not the usual 'hey, look at my setup' screen shots, but closeup shots of details in your projected image, and post them, we could do the same. If we picked out a couple of titles and a couple of scenes, we could take the same pics and you could see how your machine really compares to a few others'.

SC

BTS · Joined: 15 Oct 2006 Posts: 79 Location: vulcan

ecrabb, great idea standardization of screen shot could become very good for many. sorted by make & model people could include data regarding throw distance and setting values so within each category a more common goal could be achieved. if one image was made to be the "test", things within it could be selected to show the "best" performance limitations of each machine, individual posts could include a description of pj (ie: stock/mods/age/ect)

kschmit2 · Posted: Sat Mar 29, 2008 8:06 pm Post subject:

BTS, you can use my test pic

Preview:

Link:
http://rapidshare.com/files/137785542/AVSFORUMtestpic01.png

Kai

kschmit2 · Posted: Sat Mar 29, 2008 8:15 pm Post subject:

Ohh, and here's a screenshot of my NEC 6PG Plus at 1080i96 projecting that image:

**kal** · Posted: Sun Mar 30, 2008 1:45 am Post subject:

Even with a standard screenshot it still wouldn't produce the usable results unless everyone also used the exact same camera with the exact same settings taken on the exact same screen from the exact same angle on a tripod.

Kal

gregstv · Joined: 27 Aug 2007 Posts: 628 Location: Australia

I fitted a set of HD8 lens to my 1251 and the picture is sharper and has better contrast.Have you tried running the
blue ray to the HD fury at 720p/60 with out using the scaler? This worked great for me.

jantje112 · Joined: 17 Jul 2006 Posts: 328

**kal** · Posted: Sun Mar 30, 2008 1:21 pm Post subject:

mike calcott · Joined: 18 May 2006 Posts: 307 Location: Australia

What lens alternative is there for a Sony 12xxx series considering that I am the other side of the pond and shipping is expensive, Joust mods and 145's could exceed the current value of a 12xxx Pj. Does anyone in OZ have any hd8's for sale, are there any other 8" lens's that focus sharper that would fit a 12xxx

Zebu Fellenz · Joined: 21 Dec 2006 Posts: 2567

I wouldn't change the lenses. The PT-65 lenses you have now should be the sharpest short of getting the HD-145's and adapters

gregstv · Joined: 27 Aug 2007 Posts: 628 Location: Australia

I found the HD8 lens from a 1272 were sharper and had better contrast than the PT65 lens

ecrabb · Posted: Mon Mar 31, 2008 5:20 am Post subject: