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February 14th, 2010, 02:05 AM
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#1 |
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Regular Crew
Join Date: Mar 2005
Posts: 113
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Is T3.5 different from F3.5? Should i expect translations in DOF?
Hey, what's up guys?
being off the field for a while. Need some help here. thank you very much in advance. I want to know if there's any difference between let's say: T2.8 and F2.8 I notice the aperture in some lenses, such as the panavisions, comes expressed with a "T" Is one or the other getting more light to the sensor, so the DOF is different from one each other? |
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February 14th, 2010, 02:23 AM
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#2 |
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Inner Circle
Join Date: Nov 2006
Location: Tallahassee, FL
Posts: 4,100
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*T* stops take the loss of light through the lens into account. F Stops are mathematical formulas that give an ideal best case. In other words, F Stop pretends there is no light loss through the glass, whereas T-Stops take the loss of the glass into account.
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DVX100, PMW-EX1, Canon 550D, FigRig, Dell Octocore, Avid MC4/5, MB Looks, RedCineX, Matrox MX02 mini, GTech RAID, Edirol R-4, Senn. G2 Evo, Countryman, Moles and Lowels. |
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February 14th, 2010, 02:27 AM
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#3 |
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Regular Crew
Join Date: Mar 2005
Posts: 113
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Is there a chart with equivalents of T-Stops to F-Stops ?
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February 14th, 2010, 03:29 AM
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#4 |
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Wrangler
Join Date: Jan 2002
Location: Los Angeles, CA
Posts: 6,810
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no, the whole point is that t-stops are calibrated to a given lens, where f-stops are, as Perrone says, simply mathematical and thus have more margin for error.
Just use the t-stops as you used to use f-stops and you will be fine.
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Charles Papert www.charlespapert.com |
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