Thursday, January 22, 2009
Take the digital 5600k plunge—your camera will thank you!
One of the first things people seem to notice about the Sony F35 is that it has no filter wheel. “Aha,” many say, “this is the ultimate film-style HD camera. I’ll actually need to use an 85 filter in the matte box when shooting outdoors, just like a film camera. Finally an HD camera I can understand!”
Wrong.
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Wednesday, January 21, 2009
In which I actually do the math to see how Schneider’s new CTB’s measure up to Wratten filters
A couple of people commented on my previous piece, Schneider Optics Sings the Blues, to say that the CTB numbers of the Schneider filters don’t like up with the Wratten numbers they gave me. And they were right. Next time I’ll remember to do my homework.
I calculated the Mired value for each of the filters in question. Here’s what I came up with:
80B = 113 mireds
80C = 80 mireds
80D = 54 mireds
1/2 CTB = 80
1/4 CTB = 35
1/8 CTB = 18
This is my Wratten reference, and this is my CTB reference.
They don’t really line up neatly, but that’s okay. I’ve used the 80D with great success but there doesn’t seem to be a true equivalent in the Schneider Blues, and the closest I can get to the approximately 1/2 stop loss of the 80D seems to be the 1/4 CTB. If Chater Camera’s 80D filter is in on Friday I’ll do a comparison and see what a reasonable Schneider equivalent is.
Sorry about the errors. I’ll be less trusting in the future.
Tuesday, January 20, 2009
Schneider’s new 1/2, 1/4 and 1/8 CTB filters have “RED” and “Phantom” written all over them
All silicon sensors are daylight native, although most cameras hide this fact so well it’s never an issue. Not so with cameras like the RED and Phantom HD, which may need a little help under tungsten light.
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Tuesday, January 20, 2009
Three manufacturers are striving to create the perfect filter, and we’re going to help them
I’m ramping up for an IR/Hot Mirror filter shootout, where I hope to test IR cut filters of various types from three different manufacturers: Schneider Optics, Tiffen and Formatt. If all goes well, and all the filters arrive in time, I’m hoping to shoot tests on Friday at Chater Camera on the Sony F35, Sony EX1, Sony EX3 and RED cameras.
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Thursday, January 15, 2009
Thought your ND filters were really neutral? Guess again—this camera can SEE the differences
While testing the Sony F35 recently at Chater Camera I performed my usual IR test and stacked a bunch of ND filters in the matte box while shooting a sunny day exterior. The image turned bright magenta/red, and it wasn’t IR contamination because we were able to white balance the color cast away.
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Wednesday, January 14, 2009
It’s not so hard, once you know all the secrets…
The RED ONE is cheap and good; the Sony F35 is expensive and utterly amazing.
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