The Official Stewart Film Screen thread. - Page 66 - AVS Forum
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post #1951 of 1967 Old 12-12-2014, 06:45 PM
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The issue I see with the firehawk is the off axis viewing. The Firehawk looks to be 35 degrees to 50% vs 77% with the Grayhawk. The gain is not really an issue, given how bright the projector is (too bright really for 92" screen even in gray, find myself squinting on bright scenes). This is not a dedicated home theater, so off axis viewing is something that happens quite a bit.

Also with further researching I see mention of samples. Do these come from dealers or the manufacturer? Perhaps having a grayhawk and a firehawk samples to evaluate could be the way to go. Probably have to go to Dallas or Oklahoma City to find a dealer (both about 120 miles away).

As a side note I am also looking forward to getting a 4k projector, hopefully towards the end of next year when the whole HDMI 2.0, HDCP 2.2 and Rec 2020 colorspace issues are worked out (I know next year could be dreaming). I assume both the Firehawk and the Grayhawk would do well with a 4k picture.

From my understanding of Stewart screens essentially there is 100->grayhawk->firehawk in order of no rejection of ambient/reflected to most rejected.

Last edited by mike123abc; 12-12-2014 at 06:58 PM.
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post #1952 of 1967 Old 12-12-2014, 07:15 PM
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The Official Stewart Film Screen thread.

I have photos of severe off axis....lemme find them and post. Oops, those were of an older UltraMatte screen, not Firehawk.

Nevertheless, I can take a new picture this weekend.

These photos below are not off axis, but are with ambient daytime light present in my white on white living room with a FireHawk and a JVC RS56 projector.


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Last edited by Stan-Lee; 12-12-2014 at 08:20 PM.
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post #1953 of 1967 Old 12-13-2014, 05:33 PM
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New photos of late afternoon sunlight coming in the living room and right at the screen from an angle. I took 3 pics. From the left side (light behind me), Straight on at screen (light coming from left to the screen), and From the right side, camera pointed at screen with the sunlight coming from the left and onto the screen image and into the camera slightly.





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Last edited by Stan-Lee; 12-13-2014 at 10:16 PM.
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post #1954 of 1967 Old 12-13-2014, 08:33 PM
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Quote:
Originally Posted by mike123abc View Post
The issue I see with the firehawk is the off axis viewing. The Firehawk looks to be 35 degrees to 50% vs 77% with the Grayhawk. The gain is not really an issue, given how bright the projector is (too bright really for 92" screen even in gray, find myself squinting on bright scenes). This is not a dedicated home theater, so off axis viewing is something that happens quite a bit.

Also with further researching I see mention of samples. Do these come from dealers or the manufacturer? Perhaps having a grayhawk and a firehawk samples to evaluate could be the way to go. Probably have to go to Dallas or Oklahoma City to find a dealer (both about 120 miles away).

As a side note I am also looking forward to getting a 4k projector, hopefully towards the end of next year when the whole HDMI 2.0, HDCP 2.2 and Rec 2020 colorspace issues are worked out (I know next year could be dreaming). I assume both the Firehawk and the Grayhawk would do well with a 4k picture.

From my understanding of Stewart screens essentially there is 100->grayhawk->firehawk in order of no rejection of ambient/reflected to most rejected.
No, the Grayhawk has no ambient rejection, none, nada. It is gray for different reasons. Any ambient rejection will come with some narrower viewing cone. When we did some side by side tests a few years ago, the GH washed worse than any material because of it's low (negative) gain. It is for a different purpose. Your dealer should be helping you pick the right screen. If you don't have one helping you, hire me before you make a mistake.
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post #1955 of 1967 Old 12-13-2014, 10:19 PM
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But, at night, no lights, the image looks the same from any angle. At least to my eyes it looks the same.
Projector is a JVC RS56 (1200 lumens)

This is nearly straight on, but at slightly off-center.


Approx: severe angle (viewing from the right)


Approx: closer to 45 deg (viewing from the left)
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Last edited by Stan-Lee; 12-14-2014 at 06:32 AM.
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post #1956 of 1967 Old 12-14-2014, 06:46 AM
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Quote:
Originally Posted by GetGray View Post
No, the Grayhawk has no ambient rejection, none, nada. It is gray for different reasons. Any ambient rejection will come with some narrower viewing cone. When we did some side by side tests a few years ago, the GH washed worse than any material because of it's low (negative) gain. It is for a different purpose. Your dealer should be helping you pick the right screen. If you don't have one helping you, hire me before you make a mistake.
I have not been to a dealer yet. I was just going by Stewart's web site where they list the Grayhawk as:

Quote:
Superior performance in environments with ambient light
Ambient Light Front Reflectance Value 49% per foot candle
Ambient Light Resistance Moderate performance in ambient light
and the FireHawk as:

Quote:
Ambient Light Front Reflectance Value 27% per foot candle
Ambient Light Resistance Excellent performance in ambient light
I also considered the gray screen since my projector does not have a dynamic iris, so it could help bring down the black floor.


The pictures that Stan-Lee has provided of off axis and ambient performance of the Firehawk sure look good.
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post #1957 of 1967 Old 12-14-2014, 08:17 AM
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The Official Stewart Film Screen thread.

The FireHawk is a GREAT screen for my home. White ceiling and walls and carpeting! Gah! I have a 120 diag fixed frame Luxus deluxe and I would do the same Stewart Firehawk screen if I had to do it all again.

Last edited by Stan-Lee; 12-15-2014 at 11:07 AM. Reason: clarify
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post #1958 of 1967 Old 12-15-2014, 10:48 AM
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Quote:
Originally Posted by mike123abc View Post
I have not been to a dealer yet. I was just going by Stewart's web site where they list the Grayhawk as:



and the FireHawk as:



I also considered the gray screen since my projector does not have a dynamic iris, so it could help bring down the black floor.


The pictures that Stan-Lee has provided of off axis and ambient performance of the Firehawk sure look good.

Off axis performance is perfectly fine. I had a Firehawk G3 for 5 years in my theater - 118" wide, with one row of seating - 14' wide. I frequently sat in an off axis seat when guests were there. No problems !

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post #1959 of 1967 Old 12-15-2014, 11:14 AM
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A bit off-topic from the current conversation, but I just want to say I love my ST100 screen. I've got it in a painted/carpeted dedicated black pit theater room, but it's such a nice screen.

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post #1960 of 1967 Old 12-16-2014, 09:41 AM
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Quote:
Originally Posted by DavidHir View Post
A bit off-topic from the current conversation, but I just want to say I love my ST100 screen. I've got it in a painted/carpeted dedicated black pit theater room, but it's such a nice screen.

Great screen for use in a perfect room like yours.
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post #1961 of 1967 Old 12-16-2014, 10:31 AM
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Quote:
Originally Posted by craig peer View Post
great screen for use in a perfect room like yours.
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post #1962 of 1967 Old 12-16-2014, 10:35 AM
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That room is pretty much a requirement for the ST100 to look its best. For the rest of us without perfect black rooms, there's the ST130 and the Cima Neve !!
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post #1963 of 1967 Old 12-16-2014, 10:55 AM
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While I am able to achieve the light output I prefer with the ST100 paired with my JVC RS4810 (even considering some lamp aging), if I wanted anything notably brighter I would have to move up to the Neve or ST130 even in this room - or move to a brighter projector, but I don't like real bright images - my eyes don't tolerate them well. And I love the contrast/blacks of the JVC.

Just to add: my screen is 46"x108", 14ft projector throw
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Last edited by DavidHir; 12-16-2014 at 11:15 AM.
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post #1964 of 1967 Old 12-16-2014, 11:00 AM
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I also really like the Luxus Deluxe frame. The magnet clips for the bottom of the frame (behind it) do a really nice job of keeping the entire screen frame flat against the wall.
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post #1965 of 1967 Old 12-17-2014, 08:49 AM
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The Official Stewart Film Screen thread.

More pics of my FireHawk. The room is not completely dark in reality. The other post shows the darker room but these pretty much show actual lighting at night. The screen lights up the room but as you can see, any angle is viewable with FireHawk.





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Last edited by Stan-Lee; 12-17-2014 at 08:52 AM. Reason: clarify
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post #1966 of 1967 Unread Today, 12:09 PM
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Those pics are impressive given the angle and lighting in the room!

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post #1967 of 1967 Unread Today, 09:25 PM
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I'm always fascinated by the differing perceptions of hot-spotting. A lot of people just don't notice it, and I suppose they are the lucky ones.
The Firehawk is truly a great screen for it's intended function.

But the obvious (IMO) hotspotting prevalent in Stan-Lee's photos is the main reason I had to give up considering the firehawk and go with an ST-130, choosing to treat my room instead of having the screen try to fix the problem.
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