D90 Mode test

Yes, I ran it several times. As long as I used my iPhone as a light source and followed the "formula" I got the same results. That's why I locked off the tripod head and shot it so I could cut it together.

-a-
 
what did you find? i don't see any real difference and i wouldn't expect it either since these modes shouldn't have any effect in movie mode. with a manual lens you're always in "a" no matter what.

/matt
 
I tried locking @ f/16 and opening up to f/5.6 it was pretty noisy. Sure the lens is sharper @ f/5.6 but you lose the shallow DOF.
 
mattsand said:
what did you find? i don't see any real difference and i wouldn't expect it either since these modes shouldn't have any effect in movie mode. with a manual lens you're always in "a" no matter what.

/matt
Click to expand...
he's using a 50mm f/1.8 AF lens. I don't have any CPU lenses so I can't test the theory
 
i think you misunderstood my point, af lenses also have manual aperture in live view, which he uses in this test. lenses without an aperture ring can't be controlled at all in live view.

what's the theory? i think car3o confirmed in his tests that it doesn't matter what the aperture is set to before entering live view. with the same light source you get the same exposure no matter what.

/matt
 
Mattias seems to be correct - the same light source produces the same result no matter which mode you use - except for S. Here I could change the shutter speed and adjust EV. On the other modes pretty much everything stayed locked no matter what.
 
Hey,

I've read your blog, and I guess I should clearify what I'm asking. How do you set a a jpeg to 80% or 90% white... using photoshop? I'm sure its a simple thing, but could you just run me thru the steps?

Thanks.
 
You can use most any photo or image tool. Use a black background, add a white layer on top. Change the transparency of the white layer in 10% increments between 50% white to 100% white and create a jpg at each step. Use iTunes to load the jpgs into your iPhone.

I set the 80% white jpg for my wallpaper (select the photo, click the icon in the lower left, choose "Use as wallpaper"). With my iPhone in sleep mode I can click any button to wake it up and it will display the 80% white image. It only covers the center half of the screen but that's usually enough to cover the lens.

The other thing to set is in Settings, Brightness. Turn off Auto-brightness and drag the slider to the right for full brightness.

Hope that helps,
-a-
 
brunsona said:
You can use most any photo or image tool. Use a black background, add a white layer on top. Change the transparency of the white layer in 10% increments between 50% white to 100% white and create a jpg at each step. Use iTunes to load the jpgs into your iPhone.

I set the 80% white jpg for my wallpaper (select the photo, click the icon in the lower left, choose "Use as wallpaper"). With my iPhone in sleep mode I can click any button to wake it up and it will display the 80% white image. It only covers the center half of the screen but that's usually enough to cover the lens.

The other thing to set is in Settings, Brightness. Turn off Auto-brightness and drag the slider to the right for full brightness.

Hope that helps,
-a-
Click to expand...

Thanks, thats great.
 
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