DV Info Net - EX1 infrared contamination: myth or reality?

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- Sony XDCAM EX Pro Handhelds (https://www.dvinfo.net/forum/sony-xdcam-ex-pro-handhelds/)

- - EX1 infrared contamination: myth or reality? (https://www.dvinfo.net/forum/sony-xdcam-ex-pro-handhelds/135677-ex1-infrared-contamination-myth-reality.html)

Also, Redrock Micro sell their own 4x5.65 750 nm IR filter:

microFilter IR Cut (Hot Mirror) 4x5.65"

Piotr, surely RedRock does not manufacture filters - do you know which brand do they re-purpose?

Quote:

Originally Posted by Alex Raskin (Post 962988)

Piotr, surely RedRock does not manufacture filters - do you know which brand do they re-purpose?

Have no idea (and don't think they would say), but Brian Valente, who's been giving me excellent support with my other orders with Redrock Micro, says they've learned a lesson from the competitor's attempts, and that theirs is better...

Would it stop you from purchasing the camera again?

Quote:

Originally Posted by Sean Donnelly (Post 962821)

Just a couple of things I've gone through with ex1 IR contamination:

-It is a serious reality. Piotr is right, it is most prominent under tungsten on certain black fabrics, although lately I've found certain blue polyesters turning purple.

-Sony support doesn't seem to know (or care too much). I've spoken to several people about it at Sony support who respond with, "That's interesting, we'll have to ask the engineers".

-The 486 has been working for me very well behind my Letus Extreme adapter. Many people will tell you not to do this, and they may be right, but it is working for me. I have yet to see the true cut 750 filter yet, however I will be ordering a 4x5.65 once they become available.

-As mentioned in a previous post the green/cyan cast from the 486 that is found on the wide end with the 486 is actually pretty easy to remove in post compared to the alternative. At this point I have a preset secondary in Color that is basically a magenta adjustment with an inverted circular vignette.

-I have noticed this on other cameras, namely the Panasonic HPX-3000, and some F-23's were reported to have it until the IR filter was replaced. I'm wondering if that is a possible fix for the EX3, where the IR filter is more accessible.

-Sean

Quote:

Originally Posted by Bob Kerner (Post 963302)

Would it stop you from purchasing the camera again?

Let me throw my 2 cents in here. My answer is no. The results from this camera are incredible when it is used properly.

I have purchased, returned, and re-purchased the B+W 486. The reason it wen back is because of the green vignetting. The reason I got it back was it worked otherwise.

I tried the Schneider Optics 750 True-cut, but it was useless, completely, on my camera. I provided proof in this thread:
http://www.dvinfo.net/conf/sony-xdca...aste-time.html
But people have said it worked for them yet I have seen no results from their use.

Until there is a better camera for the price I would buy the EX1/3 and know that it has its limitations like anything else does.

Alex, that link was for a 4x4 size. For the wide lenses on my adapter I need to use 4x5.65 or larger.

Bob, it would not stop me from purchasing this camera, however it is something to be aware of and you should be prepared to purchase filtration to deal with it. As I mentioned, I've seen the same phenomenon on an HPX3000, a camera that retails for 5 times the price of an ex1.

-Sean

Quote:

Originally Posted by Bob Kerner (Post 963302)

Would it stop you from purchasing the camera again?

No, I would buy EX1 camera again in a heartbeat really.

Just add this 486 filter (some say this one fits too), and you're good to go.

Additional expense to the camera cost: $150 - $200 depending on filter variant. Not pleasant, but yet not significant enough to stop from buying the cam. Hey, look at it this way: you have to buy many other accessories anyway... filter is just one of them. And, if you go the matte box route - fohgettabaoutit... money will start flying outta window in droves, so 77mm filter seems super cheap on comparison :)