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Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Minolta_STF_135mm_f/2.8_T4.5_lens> ?p ?o. }

• 2.8_T4.5_lens abstract "Originally produced by Minolta, and currently produced by Sony, the STF 135mm f/2.8 [T4.5] is a photographic lens compatible with cameras using the Minolta AF and Sony α lens mounts. STF stands for Smooth Trans Focus, in reference to its special optical system, which is intended to smooth the transition between the plane of focus and out-of-focus areas in the image. It is not a soft-focus lens.The STF is a manual focus-only lens, due to the use of an apodization filter that provides the high-quality bokeh effect. This lens is the only genuinely Minolta/Sony A-mount lens produced without autofocus capability. It is also the sole such lens having a manual aperture ring.Apodization is a process in spatial signal processing which can enhance resolution by reducing the secondary maxima in the diffraction pattern of the lens' aperture. The STF lens features an optical apodization filter in form of a neutral-gray tinted concave lens element near the lens' diaphragm modulating the intensity profiles of the circles of confusion in such a way as to become truly Gaussian. Thereby, it is also deemed to improve the "bokeh" of the lens, that is the character of the image in the out-of-focus areas.The lens offers two separate diaphragms; one nine-bladed circular diaphragm, controlled by the camera when the lens is set to auto mode ("A"), and one ten-bladed perfectly-circular diaphragm, which is controlled by the lens' aperture ring when set to manual settings T4.5 to T6.7.The F-number in this lens refers to the effective aperture opening and determines the depth-of-field produced by its use. The T-number refers to the amount of light, which passes through the lens and is collected on the film or sensor, as such, transmission stops are used by the camera to calculate exposure. Both values differ significantly, because the tinted glass element remains in the optical path all the time. Fully open, the difference amounts to 1.5 EV, however, the difference will become smaller as the aperture is closed, just as the smoothening effect will become reduced.The optical effect can be emulated by combining depth-of-field bracketing with multi exposure, as implemented in the Minolta Maxxum 7's STF function.Minolta STF 135mm f/2.8 [T4.5]".
• 2.8_T4.5_lens thumbnail Minolta-STF-02.jpg?width=300.
• 2.8_T4.5_lens wikiPageExternalLink www.the135stf.net.
• 2.8_T4.5_lens wikiPageExternalLink Sony-AF-135-STF-SAL-135F28_review.asp.
• 2.8_T4.5_lens wikiPageExternalLink detail.asp?IDLens=308.
• 2.8_T4.5_lens wikiPageExternalLink detail.asp?IDLens=76.
• 2.8_T4.5_lens wikiPageExternalLink index.php?doc=STF-review.
• 2.8_T4.5_lens wikiPageExternalLink af135f28stf.
• 2.8_T4.5_lens wikiPageExternalLink af135f28stfs.
• 2.8_T4.5_lens wikiPageExternalLink 390-sony_135_28.
• 2.8_T4.5_lens wikiPageExternalLink 135stf.htm.
• 2.8_T4.5_lens wikiPageID "8959335".
• 2.8_T4.5_lens wikiPageRevisionID "569788915".
• 2.8_T4.5_lens aperture "2.8".
• 2.8_T4.5_lens application "Smooth Bokeh".
• 2.8_T4.5_lens avHoriz "18.2".
• 2.8_T4.5_lens category "Minolta A-mount lenses".
• 2.8_T4.5_lens closeDist "87.0".
• 2.8_T4.5_lens diaphragm "9".
• 2.8_T4.5_lens elements "8".
• 2.8_T4.5_lens featMacro "n".
• 2.8_T4.5_lens featSpecial "Smooth Trans Focus".
• 2.8_T4.5_lens featUsm "n".
• 2.8_T4.5_lens filter "72.0".
• 2.8_T4.5_lens flength "135.0".
• 2.8_T4.5_lens groups "6".
• 2.8_T4.5_lens hasPhotoCollection 2.8_T4.5_lens.
• 2.8_T4.5_lens hood "Bayonet".
• 2.8_T4.5_lens maker Minolta.
• 2.8_T4.5_lens maker Sony.
• 2.8_T4.5_lens maxMag "1".
• 2.8_T4.5_lens msrp "$1200 USD".
• 2.8_T4.5_lens name "Minolta STF 135mm f/2.8 [T4.5]".
• 2.8_T4.5_lens reason "bracket".
• 2.8_T4.5_lens replace "Minolta version succeeded by Sony version in 2006".
• 2.8_T4.5_lens start "1999".
• 2.8_T4.5_lens title "Minolta STF 135mm f/2.8 [T4.5] lens".
• 2.8_T4.5_lens type "Special Prime".
• 2.8_T4.5_lens weight "730.0".
• 2.8_T4.5_lens subject Category:Minolta_A-mount_lenses.
• 2.8_T4.5_lens comment "Originally produced by Minolta, and currently produced by Sony, the STF 135mm f/2.8 [T4.5] is a photographic lens compatible with cameras using the Minolta AF and Sony α lens mounts. STF stands for Smooth Trans Focus, in reference to its special optical system, which is intended to smooth the transition between the plane of focus and out-of-focus areas in the image.".
• 2.8_T4.5_lens label "Minolta STF 135mm f/2.8 T4.5 lens".
• 2.8_T4.5_lens label "Minolta STF 135mm f/2.8 T4.5".
• 2.8_T4.5_lens label "スムース・トランスファー・フォーカス".
• 2.8_T4.5_lens label "美能达 STF 135mm f/2.8 T4.5".
• 2.8_T4.5_lens sameAs スムース・トランスファー・フォーカス.
• 2.8_T4.5_lens sameAs m.027r8vk.
• 2.8_T4.5_lens sameAs Q4044334.
• 2.8_T4.5_lens sameAs Q4044334.
• 2.8_T4.5_lens wasDerivedFrom 2.8_T4.5_lens?oldid=569788915.
• 2.8_T4.5_lens depiction Minolta-STF-02.jpg.
• 2.8_T4.5_lens isPrimaryTopicOf 2.8_T4.5_lens.