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11-02-2013, 05:36 PM   #1
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somebody school me with this video

Somebody please tell me what is going on this video!
I took Photography back in High Shool with Film Cameras and I KOW FOR SURE that Aperature along with what speed (ISO) film to control the amount of light, but with this video, it doesn't appear that they are doing so! school me please!


11-02-2013, 05:44 PM   #2
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What's to know?. Aperture is fixed, shutter speed is fixed, light level is constant, he's just altering the ISO sensitivity.
11-02-2013, 05:56 PM   #3
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QuoteOriginally posted by rawr Quote
What's to know?. Aperture is fixed, shutter speed is fixed, light level is constant, he's just altering the ISO sensitivity.

yes, but photo class taught me that as you adjust Iso, and depending on the conditions to adjust your aperature as well, am I wrong in my assumptions
11-02-2013, 06:00 PM   #4
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QuoteOriginally posted by kricha6431 Quote
and depending on the conditions to adjust your aperature as well
Yes, if you want an accurate and constant exposure. But look at this scene - it goes from dark (under-exposed) to bright (overexposed) as the ISO (sensitivity) increases. All normal.

11-02-2013, 06:02 PM   #5
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QuoteOriginally posted by rawr Quote
Yes, if you want an accurate and constant exposure. But look at this scene - it goes from dark (under-exposed) to bright (overexposed) as the ISO (sensitivity) increases. All normal.


thanks, thats kind of what i thought
11-02-2013, 06:02 PM   #6
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QuoteOriginally posted by kricha6431 Quote
yes, but photo class taught me that as you adjust Iso, and depending on the conditions to adjust your aperature as well
If you want to keep your exposure on the same level. It's not a goal in these test - while filming, you keep your shutter speed at the same level (let's say typical 1/50s), your aperture to keep the DOF the same and if the light level is the same, the only free parameter to change the exposure is the ISO.
QuoteOriginally posted by kricha6431 Quote
am I wrong in my assumptios
Yes, you should repeat your photo classes. :P
11-02-2013, 06:15 PM   #7
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QuoteOriginally posted by jaad75 Quote
If you want to keep your exposure on the same level. It's not a goal in these test - while filming, you keep your shutter speed at the same level (let's say typical 1/50s), your aperture to keep the DOF the same and if the light level is the same, the only free parameter to change the exposure is the ISO.
Yes, you should repeat your photo classes. :P

I have been planning on taking more photo class, but learning filming by way dslr, and thanks
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