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Canon EF-S 18-135mm f/3.5-5.6 IS Lens The Canon EF-S 18-135mm f/3.5-5.6 IS lens cover an extremely large focal length range, with a 35mm equivalency of 29-216mm when used with a Canon APS-C EOS Digital SLR. The lens features internal focusing down to 1.5′ and offers image stabilization for up to 4-stops of movement and shake control when shooting under lower lighting conditions. The lens has a variable aperture of f/3.5-5.6 over the focal length range. Due to the wide focal length coverage of this lens it can generally be regarded as an excellent travelling lens when you are on holidays. When travelling many photographers do not want to carry a large amount of equipment and this lens will help greatly in that regard. Being a variable aperture lens, many photographers do not like this lens from that perspective. Also some of the zoom lenses with a shorter focal length range and also with constant apertures may have a better performance with higher resolution, but it really a matter of choice and what yo really want to get out of a lens. Many of the lenses in this category are summarised as follows: - EF-S 10-22mm f/3.5-4.5 USM Lens – Ultra wide angle lens with variable aperture - EF-S 15-85mm f/3.5-5.6 IS USM Lens – Wide angle variable large aperture lens - EF-S 17-55mm f/2.8 IS USM Zoom Lens - Fixed large aperture low light zoom - EF-S 17-85mm f/4-5.6 IS USM Autofocus Lens – Wide angle variable large aperture lens - EF-S 18-135mm f/3.5-5.6 IS Lens – Wide focal length variable large aperture lens - EF-S 18-200mm f/3.5-5.6 IS Lens – Wide focal length range variable large aperture lens - EF-S 60mm f/2.8 Macro USM Lens – Low aperture macro lens When I purchase a lens, I go more for lens performance and do not worry to much about the convenience when travelling. I do not mind carrying a larger bag with more equipment but all photographers are not the same. Some like to carry only a camera with one lens only and in those circumstances this lens may be just the option you need if you do not want to go beyond 135mm in focal length. With this lens I haave seen many beautiful and sharp images and for most travellers and holiday photographers that is all they need. Again with the variable aperture lenses they may not be so suitable for use in low light situations due to the widest aperture of f/5.6 at the 135mm focal length. Take a look at Flickr for sample images from this lens. Specifications - Focal Length, 18 – 135 mm - Aperture Maximum, f/3.5 – 5.6 - Aperture Minimum, f/22 – 36 - Camera Mount Type, Canon EF-S - Format Compatibility, Canon APS-C - Angle of View, 74° – 11° - Minimum Focus Distance, 1.5′, 45 cm - Magnification, 0.21 times - Maximum Reproduction Ratio, 1:4.7 - 12 Groups, 16 Elements - Diaphragm Blades, 6 - Filter Thread, 67 mm - Dimensions (DxL), 3.0 x 4.0″, 7.62 x 10.16 cm - Weight, 1.00 lb, 455 grams - Lightweight and Compact Design - Excellent portability - Image Stabilization allows for sharp images with a 4 stop advantage. Features - Image Stabilization, Yes - Autofocus, Yes - Tripod Collar, No
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Canon EF-S 18-200mm f/3.5-5.6 IS [napisao Gand. 6 Rujna 2008.][vijest pročitana 599 puta] Canon je obogatio svoju seriju objektiva EF-S svestranim novim modelom: objektivom EF-S 18-200mm f/3.5-5.6 IS. Taj objektiv nudi ekvivalentnu žarišnu duljinu od 29 do 320 mm i zum od 11x, što znači da je sada moguće koristiti samo taj snažan i lagan objektiv, bez potrebe za nošenjem više objektiva na snimanje. Objektiv EF-S 18-200mm f/3.5-5.6 IS namijenjen je korištenju isključivo s fotoaparatima EOS s postoljem za objektiv EF-S, što obuhvaća nove fotoaparate EOS 50D, EOS 1000D i EOS 450D te starije modele. Visokokvalitetna optika EF-S 18-200mm f/3.5-5.6 IS odlikuje se konstrukcijom koja se sastoji od šesnaest elemenata i dvanaest grupa. Njima su obuhvaćene i UD i asferične leće koje minimiziraju kromatske aberacije te jamče oštre detalje na čitavoj slici i pri svakom stupnju uvećanja. Podrška za žarišnu udaljenost od svega 45 cm fotografima pruža neograničenu fleksibilnost pri kadriranju. Optički stabilizator slike s četiri položaja brzine zatvarač Canonov optički stabilizator slike s četiri položaja brzine zatvarača, osmišljen posebno za specifični raspon žarišnih udaljenosti ovog objektiva, pridonosi smanjenju zamućenja slike koje se ponekad pojavljuje kada se snima bez stalka ili pri manjim brzinama zatvarača. Automatsko prepoznavanje panoramskih snimki jamči učinkovite performanse pri praćenju objekata u pokretu. Osim toga, budući da se IS sustav nalazi u objektivu, rezultati su vidljivi u tražilu tijekom kadriranja. Bez popratnih slika i odbljesaka Zbog odbijanja svjetlosti sa senzora za sliku na digitalnim fotoaparatima mogu se pojaviti popratne slike i odbljesci. Da bi se to spriječilo, na objektivu EF-S 18-200mm f/3.5-5.6 IS koriste se optički elementi premazani Canonovim patentiranim premazima Super Spectra te se tako dobivaju oštre, nedeformirane slike s prirodnom ravnotežom boja. Zbog nekog doista blesavog EU zakona dužni smo vas informirati da i naš Fotozine rabi cooki-e (kažu da su to “kolačići”) kao i valjda 99.999% stranica na kugli zemaljskoj. Za izvan nje nemamo informacija. S tim keksima mi ne otkrivamo vašu dob, visinu, debljinu, sposobnost kadriranja, lažiranje exifa i niš takvoga, već nam samo pomažu da se logirate i tak to. A kaj sad možete? kliketnut dole i reć poruci izazvanoj idiJotskim zakonom adio… (A mi smo vas zakonski informirali :P ;))