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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Rosco TruColor IR matte box filters

I'm in for the group buy. . . IF they can arrive el pronto. I desperately need a Rosco filter by 5/15.

Thanks very much.

Stephen
 
Please note that Abel sells Rosco, Schneider, Tiffen, etc. We'll be getting these filters in very soon. We should have the new products from the other manufacturers in a few weeks as well.
 
Okay, instead of crowding this thread with "me too" group buy orders, anyone interested contact me at michael at michael-morlan dot net. I'll arrange with Rosco and announce prices accordingly to that email list. If I'm not a big enough fish for them to grant me a dealership, I will pass the group buy onto one of the other dealers.

Let us say an April 30 deadline for the group buy so I can execute in as timely a fashion as possible. I know some people have an immediate need.

Please include "Rosco TruColor IR group buy" in the email subject line.

Give me your filter size and quantity. (I have a 4x5.65, 6.6x6.6 & 138mm round of the older filter, for instance.)

Best,

Michael
 
Just to clear things up in my mind. Would it be possible to buy standard .3 and .6 nd filters and one combo .9 (nd+ir) filter. If I understand correctly, IR problems begin at .9 and stacking is allowed as long as the IR mirror filter is stacked last. By stacking the .3 and/or .6 behind the .9 IR you should be able to cover .3-1.5 nd properly with necessary IR filtering.

Is my thinking correct or flawed?
 
The Rosco TruColor IR is the IR cut only without any ND. A single IR cut works with any number of ND's and even without. I've had the habit of keeping it in my matte box as a "clear" flat.

It's up to you whether you can handle the the extra slot it takes up. (Of course, the other day, I had ND .9 and Ultra-Pol in the slots with ND6 Grad and IR Cut taped to the front at a creative angle. This is actually pretty common.)
 
I appreciate the orders being made by PM, but...

Please email me at michael at michael-morlan dot net, as I requested. Don't PM me. Having your email address allows me to manage the group buy much easier rather than having to track down all the PM's via this site.

Thanks,

Michael
 
Hi Michael - I have a Edmund optics IR cut filter but one thing I notice is that it seems very "cold" (as in rather like a light 80a) and this seems difficult to colour balance your way out of (even at 10000K the chip stills seems very cold). Are the new filters similar? Thx
 
Wow! It's that blue? The Rosco TruColor IR is clear to visible light with a slight green color cast as you look at the glass off-axis (as is typical of dichroic coatings.) I have tested the glass with a 17mm wide-angle lens so far and noted no color cast in edges of the image.

jtm said:
Hi Michael - I have a Edmund optics IR cut filter but one thing I notice is that it seems very "cold" (as in rather like a light 80a) and this seems difficult to colour balance your way out of (even at 10000K the chip stills seems very cold). Are the new filters similar? Thx
Click to expand...
 
That's the difference between an IR filter that absorbs the light and one that reflects it (hot mirror). The big limitation to a hot mirror is that it really should be out in front, the very first thing the light hits before any other filter or the lens. An absorbtion filter can go anywhere, even behind the lens.
 
Mark,

I advise getting the existing hot mirror as a safety. You don't want to be dogging down such a critical element so close to your shoot date.

Consider the TruColor for your next project. It represents a mild improvement over the existing hot mirror, tailored for the CMOS sensors, with a slightly deeper IR cut and an optical flat rather than simple float glass.

Michael

markp said:
Thanks, Michael
Yesterday I was given an ETA of sometime in June in an email from someone at Rosco.
Is two weeks a very possible, less conservative estimate?
I have a shoot starting 12 May in China.
I can get the old version now.
I don't want to have to buy twice... Michael Rosco told me the improvements to the IR wavelength cut were minor. Do you agree based on your testing?
Click to expand...
 
Mitch Gross said:
That's the difference between an IR filter that absorbs the light and one that reflects it (hot mirror). The big limitation to a hot mirror is that it really should be out in front, the very first thing the light hits before any other filter or the lens. An absorbtion filter can go anywhere, even behind the lens.
Click to expand...

so should we use this filter as the very 1st filter?
 
K.Berlin said:
so should we use this filter as the very 1st filter?
Click to expand...

As Mitch notes above, placing a hot glass filter at the front is probably good practice since it can create hotter reflections being behind another filter. (Although, the majority of its reflective coating is outside the visible spectrum.) As with anything, test for yourself.

Regarding the group buy, as currently planned, I will discover and announce how much I can discount early next week; collect payments by the 30th (PayPal, Visa, Amex, Mastercard, Discover, check) and; place the order near May 1st.

I will note any changes in plan here and in emails to all present participants.

Best,

Michael
 
Finner said:
I'm pretty sure Matt Uhry told me at NAB that he tested the mirrored ND panchro IR's and they did not make much of a difference. The dedicated hot mirror that panchro is coming out with worked great though.
Click to expand...

Just to Clarify a few things:

1. I've never tested Panchro's - shot with them a few times ( on film ) and they were fine. Somtimes they reflect quite strongly into your shot when shooting towards the sun.

2. The test I did at Tiffen in Burbank was with ND's, IR/ND's and a Hot Mirror. There was little difference between the IR/ND's and the ND's. The Hot Mirror cut IR Pollution drastically.

3. I think the tricked out / cost no object solution for the Red would be to get a ND/Hot Mirror combo set and a clear hot mirror.

4. If #3 is too costly just get a "Clear" Hot mirror and use whatever ND.


Matt Uhry
www.mattuhry.com
 
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