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Vlastnosti
ED 90 – 250 mm f2.8 je objektív s vysokou
zobrazovacou schopnosťou navrhnutý
výhradne pre použitie s digitálnymi jednookými
zrkadlovkami Olympus FOUR THIRDS.
Používa konštrukciu odolnú proti prachu a
kvapkajúcej vode.
Štandardný zoom objektív ekvivalentný objek-
tívu 180 – 500 mm na kinofi lmovom fotoaparáte.
Vysoká kvalita zobrazenia, 12 skupín, 17 členov,
f2.8, systém objektívu obsahuje tri členy ED
(šošovky so zvlášť nízkym rozptylom).
Objektív je možné použiť s voliteľným
telekonvertorom EC-14.
Je možné ho použiť s voliteľným medzikrúžkom
EX-25 za nasledujúcich podmienok:
Ohnisková
vzdialenosť
Rozsah vzdialeností Zväčšenie
(Zátvorky uvádzajú
prepočet na
kinofi lmový prístroj)
90 mm 47,7 cm – 53,5 cm 0,28x – 0,32x
(0,56x – 0,64x)
150 mm 69,9 cm – 103,7 cm 0,17x – 0,24x
(0,34x – 0,48x)
250 mm 107,1 cm – 264,3 cm 0,10x – 0,21x
(0,20x – 0,42x)
Tento objektív nie je možné použiť spolu so
systémovými makro bleskami Olympus.
Hlavné parametre
Bajonet : Bajonet Four Thirds
Ohnisková
vzdialenosť : 90 – 250 mm
Svetelnosť : f2.8
Uhol záberu : 14˚ – 5˚
Konfi gurácia
objektívu : 17 členov v 12 skupinách
viacvrstvový poťah
(čiastočne jednovrstvový)
Riadenie clony : f2.8 až f22
Rozsah
vzdialeností : 2,5 m až (nekonečno)
Ostrenie : Prepínanie AF / MF
Hmotnosť : 3 250 g
Rozmery : Max. priemer Ø 123 mm x
celková dĺžka 276 mm
Upevnenie slnečnej
clony : Zakrytím
Priemer závitu
pre fi lter : 105 mm
Zmena technických špecifi kácií a vzhľadu bez
predchádzajúceho upozornenia vyhradená.
75


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