Projector Mini-Shootout Thread - Page 463 - AVS Forum | Home Theater Discussions And Reviews
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post #13861 of 13878 Old Yesterday, 08:13 PM
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Quote:
Originally Posted by Mike Garrett View Post
With an A-lens, I would only use a gear adjustable mount. It makes setup so much easier and more precise.
With my RS4910 I had used a Chief RPM mount but still found that due to excessive ceiling joist vibration (washer/dryer located on same upper floor) it would not hold a constant alignment. Any recommendation for a firmer geared mount?

In either case, I need to work on stiffening the ceiling joists with a strongback and/or use a vibration reducing mount like the Nigel B Design's.
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post #13862 of 13878 Old Yesterday, 09:03 PM
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Quote:
Originally Posted by Mike Garrett View Post
I don't understand this. I use a ceiling mount and an A-lens. Used to use a shelf mount for both projector and A-lens. A ceiling mount is so much easier. With the lens out of the light path, you adjust the projector to fit the screen for height, centered horizontally and to provide an image without keystone. Once you do that, you are done adjusting the projector and now just time to adjust the A-lens. Then you slide the lens in place and adjust the A-lens. Any adjustment to the A-lens does not affect the image setup of the projector without the A-lens in place. The lens and projector setup is independent of each other. Now, you can't go back and adjust the projector after adjusting the A-lens, but that messes up any A-lens setup, even if the A-lens and projector are completely separate.

Are you using a projector mount with gear adjustment or one that only uses friction screws to hold everything in place. With an A-lens, I would only use a gear adjustable mount. It makes setup so much easier and more precise.
Not all A lens mounts are independent of the proj ceiling mount. Of course yours being independent will be easier.
But things move on the ceiling especially if you have a room upstairs above the mount, ceiling timbers also move with heat and cold from the roof. If one is not overly fussy like I am about my image being masked perfectly up to the millimetre its all ok.


There is nothing in my setup that can move due to room, ceiling temperatures, its all built in like kitchen cabinets.


I have seen and heard of many complaining about ceiling mounts moving over the years, but there are ceiling mounts and ceiling mounts. The $45.00 ones are pretty useless. Mind you I had an expensive chief and a custom build A lens mount attached to it, the whole thing cost a fortune and looked beautiful, it still moved and drove me nuts!


To the other part of your question, I don't use a ceiling mount, you must have mis read my post.

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post #13863 of 13878 Old Yesterday, 09:09 PM
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Quote:
Originally Posted by jjcook View Post
With my RS4910 I had used a Chief RPM mount but still found that due to excessive ceiling joist vibration (washer/dryer located on same upper floor) it would not hold a constant alignment. Any recommendation for a firmer geared mount?

In either case, I need to work on stiffening the ceiling joists with a strongback and/or use a vibration reducing mount like the Nigel B Design's.

Bingo this always happens, that's why I stopped using ceiling mounts. A shelf cant move and its fixed at many points, not just a pivot as most mounts are. I've been selling ceiling mounts for years, expensive ones, cheap ones, if the ceiling its mounted on has an upstairs, things constantly move. I always had customers asking why does their image keep going slightly out of alignment, even in the days before we had zoom memory. When I told them to shelf mount, they stopped complaining....


Maybe the houses in the USA don't move

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post #13864 of 13878 Old Today, 05:42 AM
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Originally Posted by R Harkness View Post
Someone asked about using Horizontal lens shift on the 2:35:1 forum and a person associated with Panamorph said that at least if someone is using a Panamorph A-lens "Vertical is fine, horizontal lens shift will seriously affect your image geometry." So that spooked me.
This is specifically in relation to the anamorphic lens. Consider pincushion, if everything is setup normal to the screen, you get an even amount of pincushion on each side. No imagine if you shoot light through diagonally (using horizontal shift) now you'll have an uneven amount of pincushion.

See what an anamorphoscopic lens can do, see movies the way they were meant to be seen
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post #13865 of 13878 Old Today, 07:06 AM
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Quote:
Originally Posted by RapalloAV View Post
...


Maybe the houses in the USA don't move
No they have there mounts the right way up. Yours was upside down.

Last edited by Frank Derks; Today at 07:07 AM. Reason: e
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post #13866 of 13878 Old Today, 07:58 AM
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Quote:
Originally Posted by RapalloAV View Post
Not all A lens mounts are independent of the proj ceiling mount. Of course yours being independent will be easier.
But things move on the ceiling especially if you have a room upstairs above the mount, ceiling timbers also move with heat and cold from the roof. If one is not overly fussy like I am about my image being masked perfectly up to the millimetre its all ok.


There is nothing in my setup that can move due to room, ceiling temperatures, its all built in like kitchen cabinets.


I have seen and heard of many complaining about ceiling mounts moving over the years, but there are ceiling mounts and ceiling mounts. The $45.00 ones are pretty useless. Mind you I had an expensive chief and a custom build A lens mount attached to it, the whole thing cost a fortune and looked beautiful, it still moved and drove me nuts!


To the other part of your question, I don't use a ceiling mount, you must have mis read my post.
I have ceiling plate, 12" drop tube and RPMA mount, supporting projector, powered slide and lens. I do not have problems with movement and I have six subs. My mount is attached to wood blocking between trusses.

Did not misread your question. Knew you had shelf mount. I have used shelf mount with an A-lens for several years. Currently use ceiling mount with A-lens and find that ceiling mount is so much easier to setup. My point was, I think a ceiling mount is much easier to set up, than shelf mount, but it did not work as well for you, because you were getting movement. Sounds more like a structural problem, than a mount problem and in that case, mounting with a shelf would be a better option.
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post #13867 of 13878 Old Today, 08:01 AM
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Quote:
Originally Posted by jjcook View Post
With my RS4910 I had used a Chief RPM mount but still found that due to excessive ceiling joist vibration (washer/dryer located on same upper floor) it would not hold a constant alignment. Any recommendation for a firmer geared mount?

In either case, I need to work on stiffening the ceiling joists with a strongback and/or use a vibration reducing mount like the Nigel B Design's.
Maybe consider isolation mounts under the washer and dryer. This is done all the time with roof mounted HVAC equipment in commercial construction. https://www.google.com/webhp?sourcei...ation%20mounts

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post #13868 of 13878 Old Today, 08:12 AM
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Quote:
Originally Posted by Mike Garrett View Post
Maybe consider isolation mounts under the washer and dryer. This is done all the time with roof mounted HVAC equipment in commercial construction. https://www.google.com/webhp?sourcei...ation%20mounts
Thanks I'll look into this.
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post #13869 of 13878 Old Today, 08:18 AM
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Quote:
Originally Posted by RapalloAV View Post
I now advise everyone whos thinking of using multiple formats with A lenses to never use a ceiling mount.

Today I say its virtually impossible aligning multiple formats with A lenses, automated masking and projector ceiling mounts, things just move!
I had my Planar PD8150 mounted on a ceiling with a Panamorph lens (480), plate and sled and I never had an issue. I did't have masking though, but once I set it, it was good to go. Perhaps I'm just not as picky about alignment.

There was one time I had an issue and that's when the housekeeper decided he wanted to clean it.

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post #13870 of 13878 Old Today, 12:13 PM
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Here are some closeups taken with an iPhone 6 by my friend Didrik to show the sharpness difference between the RS600 and VW520, bot were adjusted to perfect focus with TED´s Lightspace Disc´s incredible sharpness testpattern and you could see the pixels of the Sony, but the iphone could not pick it up.
I use AvScience disc and use Singe Pixel Patter to set the focus by getting up close to the screen and observe by changing focus. You mentioned about TED's focus pattern. Do you think its a better pattern than Singe Pixel from AvScience disc? If yes then please share why do you think its better. Thx
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post #13871 of 13878 Old Today, 12:45 PM - Thread Starter
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Has anyone else pre-ordered the Samsung UHD BD Player?

There is a mile long discussion on it here:

Samsung UBD-K8500 4K HDR Ultra HD Blu-Ray Player-

I decided to order it this morning from Best Buy, i'm interested in checking out some of the media features before the UHD BD's are released in a few weeks.

The Martian will be interesting to compare in BD vs. UHD.
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post #13872 of 13878 Old Today, 12:52 PM
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Has anyone else pre-ordered the Samsung UHD BD Player?
I did, I figured I might as well, it ended up being $50 out of pocket. I used a chunk of my Discover Cashback Bonus to get Crutchfield gift codes for 20% off (so it ended up being $280 I spent in certificates, plus $49.99 or whatever in "cash").

See what an anamorphoscopic lens can do, see movies the way they were meant to be seen
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post #13873 of 13878 Old Today, 01:26 PM
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Quote:
Originally Posted by zombie10k View Post
Has anyone else pre-ordered the Samsung UHD BD Player?

There is a mile long discussion on it here:

Samsung UBD-K8500 4K HDR Ultra HD Blu-Ray Player-

I decided to order it this morning from Best Buy, i'm interested in checking out some of the media features before the UHD BD's are released in a few weeks.

The Martian will be interesting to compare in BD vs. UHD.
I ordered one and hope to pick up some BD UHD titles soon. I was hoping that the Samsung would also give me a gateway to viewing other 4K content, e.g. youtube clips, but monitoring the user thread it seems results are still unsure as to how well the youtube app works for 4K
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post #13874 of 13878 Old Today, 01:30 PM - Thread Starter
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I didn't expect this to happen. I impulsively ordered it 5 minutes before their cut-off and just got a tracking # that it will be here Wednesday.

After years of streaming 2D and 3D BD content from a 40TB raid, I'm not sure what to do with those 5" shiny round disks. hopefully there will be a way to rip these. Waiting for a disk to load seems archaic.
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post #13875 of 13878 Old Today, 01:41 PM
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That's great Zombie! I'm looking forward to reading what you have to say about the Samsung UHD experience.
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post #13876 of 13878 Old Today, 02:55 PM
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Quote:
Originally Posted by zombie10k View Post
Has anyone else pre-ordered the Samsung UHD BD Player?
Quote:
Originally Posted by stanger89 View Post
I did, I figured I might as well, it ended up being $50 out of pocket. I used a chunk of my Discover Cashback Bonus to get Crutchfield gift codes for 20% off (so it ended up being $280 I spent in certificates, plus $49.99 or whatever in "cash").
I bit the bullet and used the same deal as stanger89. Figured I may as well use up some of that $2,500 in Discover Cashback Bonus I've been hoarding for several years - tough to beat 20% off. Looking forward to seeing how this bad boy looks on the RS600.

Now to decide if I want to bypass my Denon X4000 for video and use the 2nd audio only HDMI or upgrade my receiver to a compliant one. Sadly I can't really do Atmos in my room or it would be a no-brainer upgrade.

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post #13877 of 13878 Old Today, 03:12 PM - Thread Starter
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it looks like the 3D Bluray rental company will also stock UHD BD as well.

http://www.store-3d-blurayrental.com...ory-s/1868.htm

I will be torn between choosing to watch some of these movies in UHD vs. 1080P 3D. For example - when Pacific Rim is released on UHD BD - is the extra resolution + WCG going to be obvious vs. missing out on the 3D thrill ride in a movie like this?

the comments about how '3D like' a 2D image can be just doesn't click when one has a setup optimized for 3D.
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post #13878 of 13878 Old Today, 03:35 PM
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Quote:
Originally Posted by zombie10k View Post

the comments about how '3D like' a 2D image can be just doesn't click when one has a setup optimized for 3D.
I know what you are saying, but I also get the 3D-like comments too. There are some shots in 2D that to my eye actually can look more convincing, a smoother sense of depth and realism, than their 3D counterpart. Often this is because many 3D shots have a cut-out effect. But when it's done really well and naturally, like lots of Prometheus, or in a way that gets you 3D effects you'll never get in 2D, then yeah, 2D won't be 3D.

I feel glad that I'd made a habit over the years of buying the 3D versions of movies when they were available. I wasn't even watching much 3D, the JVCs at the time not being great, but held out hope for a future purchase and now with the new RS600 I get to go back into my collection and really delve into 3D.
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