To calculate and modify the exposure time according to the sample photos, you must first know that the three factors that cause the exposure time to change during the calibration process (ie: the density of the color filter, the number of sheets, and the density of the sample, etc.) Change the values, and then calculate the new exposure time based on these values. (1) The effect of density change of color filter on exposure time Generally speaking, the effect of magenta and cyan filters on exposure is basically the same. For every increase or decrease of 10 density, the exposure time also needs to be increased or decreased by 10%. The yellow filter has little effect on the exposure, and the exposure time differs by only 10% when there is a difference of 40 densities. The following two tables are obtained through calculation for reference when calculating the exposure time. Effect of magenta and cyan filter density changes on exposure time (2) The effect of changing the number of color filters on the exposure time Generally, the transmittance of the new color filter is good, and each color filter differs by 10% of the exposure. If the color filter is worn out and the surface is scratched, the light transmittance will decrease, and each color filter will have an exposure time difference of 15% or more. Influence of the number of color filters on the exposure time (3) The effect of sample photo density on the exposure time. If the exposure time is too large or insufficient, the exposure time should be calculated and modified according to the data in the table based on the amount (percentage) of the excess or insufficient density. Modification of the density of the sample photos (dark and dark) to the exposure time. Here are two examples to illustrate the calculation method when modifying the exposure of the sample photos. Example 1: The original sample color filter combination is 604000. Exposure time: 10 seconds Number of color filters: 2 After the sample is judged that the sample photo is magenta, it is estimated that 20 density magenta filters will be added. The density of sample photos is low, it is estimated to increase the exposure by 10%. Therefore, the modified color filter combination is 606000 According to the table, the increase of 20 density magenta should be × 1.2 The number of color filters has not changed According to the table, if the density is 10% lower, it should be 1.1 Therefore, the exposure time after the change is: 10 (seconds) × 1.2 × 1.1 = 13.2 (seconds) Example 2: The original sample filter combination is 403000 Exposure time: 15 seconds Number of color filters: 2 After the sample was judged: the color was 30 density yellowish, 15 density greenish, and the sample lighter than 20%. Therefore, the modified combination of color filters is: 403000 + 300015703015-151515551500 The revised changes are: The yellow filter adds 15 densities × 1.05 Magenta color filter reduced by 15 density × 0.85 Add two color filters × 1.2 Then the modification of the exposure time should be: 15 (seconds) × 1.05 × 0.85 × 1.2 = 16 (seconds)
Round
Patio Dining Set is very convenience for guest host in your home or big party
in the garden.We offers generous proportions for ultra-comfortable round patio
dining. The gently curved chair backs and dining tables are crafted from woven
white polyethylene (HDPE) resin fibers. Sturdy powder-coated aluminum frames
are concealed from sight. Dining tables are topped with tempered glass.
·
RUST-FREE ALUMINUM FRAME
·
ALL-WEATHER HANDWOVEN WICKER
·
HIGH UV RESISTANT WICKER
·
EASY TO CLEANAND CARE
·
100% WATERPROOF
FABRIC
·
2 YEAR WARRANTY
Round
Patio dining set has many options and size, You can choose different size and
color to decorate your dining and garden.
-polyethylene
rattan: it's non-toxic and safe for the environment. It's also antimicrobial, a
quality that prohibits the growth of fungus and mildew. The wicker won't
splinter or rot in extreme temperatures (-94°F to 176°F), making our furniture
an excellent choice for almost any climate.
About
us:
1.our
factory is more than 20000 square meter big.
2.
Our showroom is about 800 square meters.
3.
we have professional sale team and more than 200 workers.
4.
The capacity of our factory is 60 containers/month.
5.
we attended CIFF furniture fair and canton fair.
Welcome
your further inquiry for further discussion, also welcome to visit our factory
to talk face to face.
Round Patio Dining Set,Rattan Round Dining Set,Wicker Round Dining Set,Garden Round Dining Set Golden Eagle Outdoor Furniture Co., LTD. , https://www.gegardensets.com
