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"This is a cleverly composed shot :)"
Brian O'Connor
"Exposure: 1/200
Aperature: 5.6
ISO: 100"
Julia Lee
"Thus f=50, N=5, C=.0333, and U=500. Applying the formula for depth of field, I get 33.3mm. Accounting for the angle of the ruler and converting to inches calculates to 1.86", which seems reasonable looking at the image scaled to 1280 pixels wide (around ~3" to ~5" appear to be in focus)"
Julia Lee
"For this shot, I doubled aperture to f/10. The distance of sharp ruler seems to have doubled as expected and ~2.5" to ~6""
Julia Lee
"Thus f=50, N=5, C=.0333, and U=500. Applying the formula for depth of field, I get 33.3mm. Accounting for the angle of the ruler and converting to inches calculates to 1.86", which seems reasonable looking at the image scaled to 1280 pixels wide (a little before 4" and 6" appear to be in focus)"
Julia Lee
"I considered anything smaller than a 1.5 pixel blur to be in focus. The image is about 1280 pixels across on my screen and my sensor is 28.448mm across, so my circle of confusion is 1.5/1280*28.448 = 0.0333375mm"
Julia Lee
"I considered anything smaller than a 1.5 pixel blur to be in focus."
Julia Lee
"The lens is a 50mm lens at f/5. N=5 and f=50."
Julia Lee
"amazing...."
Abdul Rehman
"Requirements 1, 3, 4
Exposure: 1/125
Aperture: 5.6
ISO: 100"
Julia Lee
"Requirements 3, 5
Exposure: 1/50
Aperature 5.0
ISO: 160"
Julia Lee
"Requirements 1,4
Exposure 1/500
Aperature: 5.6
ISO: 100"
Julia Lee
"Requirement 2
Exposure: 1/250
Aperature: 5.6
ISO: 100"
Julia Lee
"Requirement 4

Exposure: 1/80
Aperature: 5.6
ISO: 100"
Julia Lee
"Requirements 3, 4
Aperature: 5.6
Exposure: 1/100
ISO: 100"
Julia Lee
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