Equivalent Exposures
1/1000
True or false. Photosites are colorblind
True
International Standards Organization
What does TIFF stand for?
Tagged Image File Format
Calculate crop factor of a sensor with a 35mm diagonal
1.2
100 1/60 F/16
I am shooting a completely still landscape at night and my exposure comes out too dark. Which setting should I adjust if I want my image to look the exact same in my next image.
Shutter speed
Which image sensor will not need interpolation?
Foveon
What is the difference between grain and noise?
grain is for film and results from the texture of silver halides.
Noise is for digital cameras and is random brightness variances produced by electronics or environment.
How many tones are in the standard JPEG
8 bits = 256 tones
You find an unlabeled neutral density filter in your photo bag. You find its density is 0.5. How many stops will this alter your exposure?
Be exact with 2 #'s after the decimal point.
subtracts 1.66
find the equivalent exposure
400. 1/30. f/11
200. 1/125. ____
f/4
Which image sensor type needs an IR blocking filter and is susceptible to blooming?
CCD
name and define the 3 types of noise.
photon, transfer process, and thermal
Name 3 advantages of converting raws to DNG
DNG is a legacy format, is widely compatible, has no sidecar, openly sourced, can be smaller than raw.
List the f/#'s from f/2.8-f/22
2.8, 4, 5.6, 8, 11, 16, 22
You are using ETTR. Use shutter speed to adjust the following exposure 2 stops accordingly.
100. 1/250. f/11
100. 1/60. f/11
What sensor type is most commonly used in pro DSLRs
CMOS
On a photojournalism assignment you will be shooting a low lit night club event. There are only two full frame cameras left at the cage. All you know is Camera 1 has 32 megapixels and Camera 2 has 60 megapixels.
Which do you choose? Why?
Camera 1
Considering both sensors are the same size (critical) camera 1's lower megapixel count allows more room to make pixels bigger, therefore able to capture more light and have better noise performance.
Explain the difference between a bitmap and a vector
vector is mathematical concept and infinitely scaleable not used for photos
bitmap is defined by pixels has set resolution and is used for photos
list shutter speeds from 1/8 - 1/250
1/8, 1/15, 1/30,1/60, 1/125, 1/250
You find the following proper exposure 100. 1/60. f/22
You THEN apply a 0.6 ND filter to get motion blur in a waterfall
What would the resulting equivalent exposure be?
100. 1/15. f/22
What image sensor format was created as the equivalent to 35mm film?
full frame
Image 1 : Mean = 62 Standard Deviation = 15
Image 2 : Mean = 40 Standard Deviation = 3
Which image most likely shot at ISO 100
Image 1 SNR : 12.3
Image 2 SNR : 22.5
Answer : Image 2
name the 4 types of compression artifacts and a rough informal definition or description of each.
Posterization - gradual tones reduced to fewer tones.
Aliasing - artificial patterns from under sampling
Blocking - visible blocks of averaged color
Stair stepping - smooth curves turn to steps
The diameter of my aperture is 200mm and my focal length is 300mm. What is my f/#?
f/1.5