rety kto robi te foty i co one mają pokazać, zakres zooma?
dajcie mnie ten obiektyw to wyciągnę z niego co trzeba
(a Metallica skończyła się na pierwszym riffie z Hit The Lights)
rety kto robi te foty i co one mają pokazać, zakres zooma?
dajcie mnie ten obiektyw to wyciągnę z niego co trzeba
(a Metallica skończyła się na pierwszym riffie z Hit The Lights)
What is a "New Replica Aspheric element"?
"We’ve used "replica" aspheric elements before ... the concept is to apply an optical material (think of it as an easily moldable, almost thick liquid that can be joined to one surface of an element (it obviously is hardened in its final form). The point is that the complex aspherical shape can be applied to a specific element, and allow it to do its task(s) more efficiently than a conventional glass-molded element could."
"The new aspect is that here, this applied "coating" (definitely not like traditional lens coatings!) can be thicker, contoured to an even greater aspherical shape, and in particular, Canon developed new surface measurement and production techniques, resulting in greater precision than as it was done previously." {Rudy Winston, Canon USA]
https://www.the-digital-picture.com/...SM-Z-Lens.aspx
There are four main approaches to making aspherical lenses: the "grinding and polishing method"; the "glass molding method" to shape glass in a metal mold; the "replica method" to shape a lens by combining glass and plastics; and the "plastic molding method" to shape plastics in a metal mold. Aspherical glass lenses are made either by the grinding and polishing method or glass molding method.
https://global.canon/en/technology/i...ent/index.htmlReplica aspherical lensLater, Canon also succeeded in developing plastic-molded (PMo) aspherical lenses, which can be mass produced in larger quantities at a lower cost, and large-diameter glass-molded (GMo) aspherical lenses, which are molded in a machine that incorporates a high-precision aspherical metal mold*.
* 1982: Release of the Canon Snappy 50, the world’s first camera lens for 35mm full-frame to incorporate a PMo aspherical lens element.
1985: Release of the New FD35-105mm f/3.5-4.5, the world’s first interchangeable lens for 35mm full-frame cameras to incorporate a GMo aspherical lens element.
In 1990, Canon developed a fourth aspherical lens production technology that produces replica aspherical lenses by using ultraviolet-light-hardening resin to form an aspherical lens surface layer on a spherical lens element.
https://global.canon/en/c-museum/spe...hibition1.html
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Ostatnio w sklepie Notopstryk.pl był dzień otwarty z Canonem i miałem okazję przyjrzeć się nowemu 24-105 f/2.8 i porównać jego gabaryty z wersją f/4.
Jest duuuży ale na szczęście nie tak ciężki jak się spodziewałem.
Reportażyści będą pewnie zachwyceni, mi do krajobrazów wystarczy f/4.
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R6, EF 70-200 f/2.8L, EF 16-35 f/4L, RF 24-105 f/4L, Sigma 100-400
https://tm-photos.myportfolio.com/
Canon R6 mark II + Canon R50 + RF15-35mm f2.8L IS USM + RF 85mm 2.0 IS STM + RF 70-200 f4L IS USM +RF Sirui Anamorphic 50mm T2.9 + RF Sirui Anamorphic 150mm T2.9
https://www.youtube.com/@HubertMultana
EOS 550D, 6D, M2, M5, 80D, 7D II, kit 18-55 IS, EF-S 55-250 IS STM, EF-M 4-5,6/11-22 STM, EF-M 3,5-5,6/18-55 STM, EF-M 2/22 STM, EF 3,5-4,5/28-70, EF 1,8/50 Mk 1 i STM, EF 100-400L II, Tamron 100-400, Olympusy OM-1, OM-2N, OM-4, OM-10, stałki i zoomy Zuiko od 24 do 200 mm.