Sony HVL-MT24AM Operating Instructions Manual page 261

‫ﺍﻟﻘﻴﻢ ﺍﻟﻮﺍﺭﺩﺓ ﰲ ﺍﳉﺪﺍﻭﻝ ﺍﻟﺴﺎﺑﻘﺔ ﻟﻮﺣﺪﺍﺕ ﺍﻟﻔﻼﺵ ﺍﳌﺰﺩﻭﺝ ﺗﻘﻮﻡ ﻋﲆ ﺍﻓﱰﺍﺽ ﺃﻥ ﻭﺣﺪﰐ ﺍﻟﻔﻼﺵ‬
‫ﻋﻨﺪ ﺿﺒﻄﻬﲈ ﻋﲆ ﻣﺴﺘﻮﻳﻲ ﻗﻮﺓ ﻓﻼﺵ ﳐﺘﻠﻔﲔ، ﻳﻤﻜﻦ ﺃﻥ ﲢ ﹸ ﺴ ﹶ ﺐ ﻗﻴﻤﺔ ﻓﺘﺤﺔ ﺍﻟﻌﺪﺳﺔ ﺍﳌﻄﻠﻮﺑﺔ ﻟﺘﺤﻘﻴﻖ‬
‫ﻣﻊ ﺯﻭﺝ ﻣﻦ ﻭﺣﺪﺍﺕ ﺍﻟﻔﻼﺵ ﺍﳌﺰﺩﻭﺝ ﺩﻭﻥ ﺫﺭﺍﻉ، ﻳﺘﻢ‬
‫ﻋﲆ ﻣﺴﺘﻮﻯ ﻗﻮﺓ ٦١/١ ﺑﻨﺴﺒﺔ ﺗﻜﺒﲑ‬
￯‫ﻋﻨﺪ ﻣﺴﺘﻮ‬ ‫ﻭﻓﺘﺤﺔ ﻋﺪﺳﺔ ﺍﻟﻔﻼﺵ‬
B
.‫ﺗﻌﻄﻲ ﺗﻌﺮﻳﻀ ﺎ ﹰ ﺿﻮﺋﻴ ﺎ ﹰ ﺻﺤﻴﺤ ﺎ ﹰ‬
‫ﻋﻨﺪﻣﺎ ﺗﻜﻮﻥ ﻟﻮﺣﺪﰐ ﺍﻟﻔﻼﺵ ﺍﳌﺰﺩﻭﺝ ﲥﻴﺌﺎﺕ ﻗﻮﺓ ﳐﺘﻠﻔﺔ‬
.‫ﺍﳌﺰﺩﻭﺝ ﻛﻠﺘﻴﻬﲈ ﻣﻀﺒﻮﻃﺘﺎﻥ ﻋﲆ ﻧﻔﺲ ﻣﺴﺘﻮ￯ ﺍﻟﻔﻼﺵ‬
(
٢
B
‫ﻋﲆ ﻣﺴﺘﻮﻯ ﻗﻮﺓ ٨/١ ﻭﺍﻟﻔﻼﺵ‬
"B"
/١٩ ‫ﻋﻨﺪ ﻣﺴﺘﻮ￯ ﺍﻟﻘﻮﺓ ٨/١ ﻫﻲ‬
f
.(٣٥ ‫)ﺭﺍﺟﻊ ﺍﳉﺪﻭﻝ ﰲ ﺻﻔﺤﺔ‬
2
19 + 13
/٢٢ ‫ﻟﺬﺍ، ﰲ ﺍﳌﺜﺎﻝ ﺃﻋﻼﻩ، ﻓﺈﻥ ﲥﻴﺌﺔ ﻓﺘﺤﺔ ﺍﻟﻌﺪﺳﺔ ﻋﲆ‬
f
:‫ﺍﻟﺘﻌﺮﻳﺾ ﺍﻟﻀﻮﺋﻲ ﺍﻟﺼﺤﻴﺢ ﺑﺎﺳﺘﻌﲈﻝ ﺍﳌﻌﺎﺩﻟﺔ ﺍﻟﺘﺎﻟﻴﺔ‬
‫)ﻓﺘﺤﺔ ﻋﺪﺳﺔ ﺍﻟﻔﻼﺵ‬
100mm F2.8 Macro
.‫ﻗﻢ ﺑﺘﻄﺒﻴﻖ ﻫﺎﺗﲔ ﺍﻟﻨﺘﻴﺠﺘﲔ ﰲ ﺍﳌﻌﺎﺩﻟﺔ ﺃﻋﻼﻩ‬
2
= 361 + 169 =
.‫ﻋﻨﺪ ﺍﺳﺘﻌﲈﻝ ﻭﺣﺪﰐ ﺍﻟﻔﻼﺵ ﺍﳌﺰﺩﻭﺝ ﻛﻠﺘﻴﻬﲈ‬
‫ﻓﺘﺤﺔ ﺍﻟﻌﺪﺳﺔ‬
*
‫)ﻓﺘﺤﺔ ﻋﺪﺳﺔ ﺍﻟﻔﻼﺵ‬
(
٢
+ A
‫ﺑﺎﺳﺘﻌﲈﻝ ﻋﺪﺳﺔ‬
‫ﺿﺒﻂ ﺍﻟﻔﻼﺵ‬
"A"
‫ﻓﺘﺤﺔ ﻋﺪﺳﺔ ﺍﻟﻔﻼﺵ‬
A
/١٣ ‫ﺍﻟﻘﻮﺓ ٦١/١ ﻫﻲ‬
f
530
=
:‫ﻣﺜﺎﻝ‬
١:١
22
*
٣٦