[Poo001]

Hi Zabs,

getting this set up is frustrating. You need to make sure the screen is plum when up . My vivid storm screen is perfectly level when down (I made 2 adjustable supports) but when up was out like yours (I.e base level but screen not plum . I attached a plum line to each side (string with bolt) and then used card packers till it would go down and up perfectly level . This took allot of time . Then made sure base pj was on was level . Then getting it square to screen with no keystone was quick. If your screen is perfectly plum and base for pj is level. You should be ok .

I would say it is probably the screen moving but if it is not, possibility the pj as I have had ones that are not central so it is possible that that is not straight from yours ?

 

[Zabs]

used card packers till it would go down and up perfectly level .

Can you elaborate? I don’t know what card packers are (is it a britishism maybe?) and I don’t know how you would be using them. Also what are you attaching the plumb line to?

 

[Poo001]

Can you elaborate? I don’t know what card packers are (is it a britishism maybe?) and I don’t know how you would be using them. Also what are you attaching the plumb line to?

Card packers some one suggested playing cards . I used old business cards I had under the black corner feet . You would need to tape the plum line to the top (one on each side) so when up it hangs plum and then put in packers each side till they are lined up or parallel to the screen edge when up. As said the base my screen is on is perfectly level but I still had to do this as screen arms do wobble a bit when up

 

[Zabs]

Another thing I’d love to see, sometime, if we’re going to hear it repeated as gospel by everyone, is a comparison, some kind of qualitative data regarding this degradation of image caused by projector corrections. Because honestly after an hour of fiddling with it when I invariably give up and use the corrections, it’s truly just fine. It’s bright, it’s in focus. I’m just taking people’s word for this idea that it would somehow be noticeably better if I hadn’t done it, but I don’t know for certain. And it is pretty silly if it wouldn’t be noticeable to be wasting so much time on setup when the ls800 can very quickly align itself with the phone app.

 

[Zabs]

Card packers some one suggested playing cards . I used old business cards I had under the black corner feet . You would need to tape the plum line to the top (one on each side) so when up it hangs plum and then put in packers each side till they are lined up or parallel to the screen edge when up. As said the base my screen is on is perfectly level but I still had to do this as screen arms do wobble a bit when up

Are you saying that you’re taking the screen housing out of level so that the screen itself is level? Like they’re not level with each other?

 

[Poo001]

Are you saying that you’re taking the screen housing out of level so that the screen itself is level? Like they’re not level with each other?

Yes exactly that . The screen being plum and level is the important bit not the base casing .

 

[Zabs]

Yes exactly that . The screen being plum and level is the important bit not the base casing .

Ah ok, I’ll check that out.

was a bit disappointed that there aren’t any kind of adjustments on the Vividstorm screen. Seems like it couldn’t have been too difficult to work it into their design.

 

[mcollin6]

So in this video he has these steps:
1: make sure the screen is level. Done.

2: make the top of the image level with the top of the screen. (I’m assuming he means it should be parallel. Otherwise not sure what “level” means? If it’s just “as high as”, he would have said that?)

3: make sure the top is bigger than the bottom. I just switched to a different stand and for the first time I can manage this rather than a total skew to one side. Not sure what changed, but I’ll take it.

4: rotate the projector to make the left and right angles the same. Ok here’s the problem- doing this means the top is no longer parallel. My left and right angles are not the same. If I want to make them the same I get an angling top edge. No idea how it could be otherwise, actually. Why would the top stay put while you just get different left and right angles? How could it? That doesn’t even make sense.

If the projector is on the same horizontal plane as the screen, rotation will not change its horizontal perspective. It’s only if there is a difference between the two planes that it will move. This means one of two things:

1) if the top is parallel with the top of the screen and the bottom is NOT, the projector and screen are not co-planar. The side that has the horizontal bottom image high is tilted up. If this is the case, your projector isn’t centered on the screen. Set the angle on the projector so that the angle on the top matches the angle up on the bottom, then rotate the prokector in top view until top and bottom are parallel. Then slide the projector until the image is entered.

As a starting point, try putting a level on your projector and level it out from side to side.

2) Your screen is messed up and is not perfectly flat. I had this issue with mine and had to use a laser level to project a flat vertical plane and adjusted the mount points until it was flat. Try getting a good image on the wall to see if there is a difference. If it looks the same, then your technique is wrong.

 

[Zabs]

As a starting point, try putting a level on your projector and level it out from side to side.

That was already the first thing I did. The projector is level.

2) Your screen is messed up and is not perfectly flat. I had this issue with mine and had to use a laser level to project a flat vertical plane and adjusted the mount points until it was flat.

It’s a Vividstorm motorized floor-rising screen so I’m not sure what to do if it’s not flat. There don’t seem to be any adjustable parts. Does anyone know?

Try getting a good image on the wall to see if there is a difference

Unfortunately I have no walls, it’s all windows all around. That’s why I went this UST route in the first place.

 

[Biggaluut]

Would you all mind taking a look at my post over here - https://www.avsforum.com/threads/is...vividstorm-dropdown-pro-a-tab-tension-screen-bowed-and-worth-replacing.3292171/

I don't know what I'm doing wrong. Is it the screen? Am I mounting the projector too close, too high, too low, etc? I can't seem to get it to a point where it doesn't seem like the image is distorted in a way that adjusting the pitch/roll/yaw will do anything to correct it.

Here's an example of what I'm talking about.

 

[mcollin6]

Looks like a screen issue. Post a picture of grid lines. As you get closer to the edge, tab tensioned screens tend to warp. Most show the max size an inch or so inside the edge.

 

[Zabs]

I gave up after many hours of trying to get it manually and enabled the app correction. My picture is sharp and in focus throughout. If I’m missing something I can’t tell. Life’s too short.

 

[CS Aggie]

I gave up after many hours of trying to get it manually and enabled the app correction. My picture is sharp and in focus throughout. If I’m missing something I can’t tell. Life’s too short.

Out of curiosity, what kind of projector do you have?

I have a LG HU85LA and was able to work around this similar issue because it has a 12 point edge adjustment feature to account for such problems. You can see it in this review video here:

 

[Biggaluut]

Out of curiosity, what kind of projector do you have?

I have a LG HU85LA and was able to work around this similar issue because it has a 12 point edge adjustment feature to account for such problems. You can see it in this review video here:

Nexigo Aurora pro. Yes I am using keystone for now but that's not advisable.

 

[tc2007]

Would you all mind taking a look at my post over here - https://www.avsforum.com/threads/is...vividstorm-dropdown-pro-a-tab-tension-screen-bowed-and-worth-replacing.3292171/

I don't know what I'm doing wrong. Is it the screen? Am I mounting the projector too close, too high, too low, etc? I can't seem to get it to a point where it doesn't seem like the image is distorted in a way that adjusting the pitch/roll/yaw will do anything to correct it.

Here's an example of what I'm talking about.

View attachment 3559526

Mine's very similar to this except it's on the right. I suspect it's due to the uneven wooden media console (custom made locally) on which it rests. I spent a few mins trying to level the UST etc., didn't help. It doesn't bother me at all once I am immersed into the viewing experience.

 

[purebwa]

i had the exact same problem with my wall, and also with an epson silverflex as well actually. I bought some heavy duty velcro and ran some along the vertical and horizontal of the offending corner of the screen and it's been good for the last 4 days!

Hey @static14 - how has that held up? I'm finally come to the conclusion that my screen isn't perfectly flat (after an hour with some laser levels and a handy friend's examination). I'm thinking now about some heavy duty double sided tape around the offending corner to 'stick' it to the wall. Has yours held up?

 

[purebwa]

Also, a general question to the group: any recommendations on what I can add to raise my projector ~.5-.75"? Was thinking some rubber no-slip furniture 'feet' under each of the 3 legs. Don't love the idea of a giant piece of plywood. Want to make sure I don't miss an easier or more obvious solution before going this route.

 

[mcollin6]

Also, a general question to the group: any recommendations on what I can add to raise my projector ~.5-.75"? Was thinking some rubber no-slip furniture 'feet' under each of the 3 legs. Don't love the idea of a giant piece of plywood. Want to make sure I don't miss an easier or more obvious solution before going this route.

I use quarters…

 

[static14]

Hey @static14 - how has that held up? I'm finally come to the conclusion that my screen isn't perfectly flat (after an hour with some laser levels and a handy friend's examination). I'm thinking now about some heavy duty double sided tape around the offending corner to 'stick' it to the wall. Has yours held up?

We re-arranged our basement and moved the screen to a dead flat wall. That being said the velcro worked 100% when it was on the uneven wall.

 

[jacktracks707]

Hi Zabs,

getting this set up is frustrating. You need to make sure the screen is plum when up . My vivid storm screen is perfectly level when down (I made 2 adjustable supports) but when up was out like yours (I.e base level but screen not plum . I attached a plum line to each side (string with bolt) and then used card packers till it would go down and up perfectly level . This took allot of time . Then made sure base pj was on was level . Then getting it square to screen with no keystone was quick. If your screen is perfectly plum and base for pj is level. You should be ok .

I would say it is probably the screen moving but if it is not, possibility the pj as I have had ones that are not central so it is possible that that is not straight from yours ?

Just wanted to say thanks after fiddling with this thing for five days now your comments earlier finally made me realize I needed to get the screen straight first. In my case, it was leaning forward a little bit. I found some plastic shims in my garage that worked perfect got my screen straight as an arrow like it would be on a straight wall and everything worked perfectly. Thanks again.