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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 :)

Hot Mirror/IRND/Mirror ND Filter Matrix [Parts 1-4]

<span style="color:#FFFF00; font-weight:bold;">Hot Mirror/IRND/Mirror ND Filter Matri

this is what i see when i look at the topic of this thread...a mistake in the matrix
 
These aren't the droids you're looking for...

[Unfortunately, when a moderator double-clicks a thread title by accident, it's renamed with the HTML code that makes up the title of said thread. Problem solved].
 
First Light Films said:
I'm using the B+W IR cut filter - It comes in a 77 mm circular, which I mount on the lens. the NDs and pola go in the matte box. Any opinions on this set up?
Click to expand...

The IR cut should always come first, not last. This is because IR will go through all of your NDs and bounce back from IR cut filter causing flare and reflections in IR spectrum. You don't want that.
Also B+W IR affects colour, causing green cast on wide angles at the edges.

Get Pancro filters. Beautiful :tongue:
 
K.Berlin said:
why do you pay 300 dollars for a 0.3 and 0.6 nd filter?

the only reason i can see is to combine filters to get 1.8 or 2.1
but i dont know how it effects the picture when putting 2 ir filters into the MB.
or if a combo of a regular .3 + ir1.5 affects the picture drastically

evin?
Click to expand...

Because we had the $ to do so. I noticed that Evin also bought down to .6 and so i thought might as well grab the .3 that also has IR protection and then have a full set of Pancro's. I'm not gonna stack em either.
 
Evin Grant said:
The Rosco filter I received was a single coated prototype on some 1/2 thickness plate glass and was never intended to be a permanent camera filter.
Click to expand...

Are you suggesting an in-camera IR filter? Does the RED One have the facility to handle behind-the-lens filters? Or are you talking about filters for the matte box?
 
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David J Bernstein said:
Are you suggesting an in-camera IR filter? Does the RED One have the facility to handle behind-the-lens filters? Or are you talking about filters for the matte box?
Click to expand...

Yes, in the mattebox.
 
Evin and team,

I wanted to say thank you for doing this test and experiment. I was shooting some stuff in my house the other day using tungsten lighting and I could really see the IR effect that you guys demonstrated. I am on my way to order the Pancros. Thank you again for spending the time and helping us.
 
Evin Grant said:
If you really want to cover your bases pick up a set of Panchro filters for outdoor use and a Tiffen or Rosco Hot Mirror for tungsten shooting.
Click to expand...

Great reviewl

The Pancro web site is well made for ordering the filters... but how do you order the Tiffen and Rosco hot mirror (4x5.6) since they only show their circular one on their web site?

thanks
 
Stacking Question

Stacking Question

Assuming the Pancro hot mirror...

Does using a .9 IRND have the same amount of IR cut as a 1.5 IRND, or is it progressive?

So if I used a .9 IRND with a .6 ND stacked, would that let in a bunch of IR whereas the straight up 1.5IRND would cut that?

Trying to save a buck here.
 
mail4joeg said:
Assuming the Pancro hot mirror...

Does using a .9 IRND have the same amount of IR cut as a 1.5 IRND, or is it progressive?

So if I used a .9 IRND with a .6 ND stacked, would that let in a bunch of IR whereas the straight up 1.5IRND would cut that?
Click to expand...

Tom from Pancro told me that each one of his filters cuts more IR -- it has too because the higher the ND the more IR you will get. I bought a .9 and a 1.5 plus the Rosco Trucolor for the .3 and .6 ND IR situations.

You cannot stack his ND+IR filters but you can stack other ND and Pola with his in front.
 
Thanks Evin

Thanks Evin

Could you possibly do some more outdoor tests without a polarizer?

The colors look a bit odd to me, and I'd like to see them without the polarization adding a very strong character to the images.

How about something like a man in a black tuxedo and a woman in white standing next to one another in broad daylight?

Thanks again.
 
The Macbeth chart is a standard color reference. So, since you know what those colors should look like, you can color-correct out any effect of the polarizer (since that is the same in each shot) leaving you with just the ND filter effects.
 
What about a Tiffen Hot Mirror with some regular old ND filters behind it (closer to the lens)? Any problem with this? That's what the Hot Mirror is made for right? This thing with each Pancro IRND cutting more IR than the last is now confusing me, I was all set to get the Tiffen Hot Mirror while I wait for my Pancros to ship, but am a bit confused now..
 
Is everyone just keeping their Rosco (the fragile butterfly) permanently in it's own filter tray? If it's between a Rosco and a Tiffen and you aren't considering how durable the actual filter is, does the Rosco win?
 
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