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| This article is a gallery of '''very fast''' [[lenses]] beyond average "fast" definition.<small><br/>See also [[Lens#Lens_Speed|lens speed]] (=max. [[aperture]] of lens)</small> | | This article is a gallery of '''very fast''' [[lenses]] beyond average "fast" definition.<small><br/>See also [[Lens#Lens_Speed|lens speed]] (=max. [[aperture]] of lens)</small> |
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− | For [[APS-C]] format these are lenses with max. aperture of at least f1.4!<br(> | + | For [[APS-C]] format these are lenses with max. aperture of at least f1.4!<br/> |
| For [[35mm film]] frame format these are lenses faster than max. aperture f1.7 since<br/> | | For [[35mm film]] frame format these are lenses faster than max. aperture f1.7 since<br/> |
| the average 50mm [[SLR]] system [[standard lens]] already has a speed of f1.7 or f1.8!<br/> | | the average 50mm [[SLR]] system [[standard lens]] already has a speed of f1.7 or f1.8!<br/> |
− | For [[medium format]] these are lenses with max. aperture of at least f2.0!<br(> | + | For [[medium format]] these are lenses with max. aperture of at least f2.0!<br/> |
− | For [[large format]] these are lenses with max. aperture of at least f2.5!<br(> | + | For [[large format]] these are lenses with max. aperture of at least f2.5!<br/> |
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| {{Flickr_image | | {{Flickr_image |
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| || medium || f1.8 || f2.8 || f3.5 || '''f2.0''' lenses established the available light photography with the [[Ernostar]] in 1924.<br/>The 2nd version of the Ernostar also set the benchmark already in 1925. | | || medium || f1.8 || f2.8 || f3.5 || '''f2.0''' lenses established the available light photography with the [[Ernostar]] in 1924.<br/>The 2nd version of the Ernostar also set the benchmark already in 1925. |
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− | || [[35mm]],<br/>full-frame|| f0.95 || f1.4 || f1.7 || '''f1.6''', because faster than f1.7.<br/>f1.7 is a lens speed which is almost average for the [[SLR]] normal lenses, since the 1960s. Such [[normal lens]]es were also the kit lenses. Fast lenses for [[leaf shutter]] SLRs reach only f1.9 max. lens speed. The benchmark is defined by the so-called [[Canon]] "Dream Lens" for [[rangefinder camera]]s. Actually it's been surpassed by a few faster lenses. | + | || [[35mm]],<br/>full-frame|| f0.87 || f1.4 || f1.7 || '''f1.6''', because faster than f1.7.<br/>f1.7 is a lens speed which is almost average for the [[SLR]] normal lenses, since the 1960s. Such [[normal lens]]es were also the kit lenses. Fast lenses for [[leaf shutter]] SLRs reach only f1.9 max. lens speed. The benchmark value here is taken from the Farrand Super-Farron 76 mm f/0.87, made for Leica/Visoflex fitting.<ref>[http://www.auction2000.se/auk/w.Object?inC=WLPA&inA=20140812_1547&inO=544 Farrand New York, Super-Farron 76 mm f/0.87] offered for sale (but unsold) at the [http://www.auction2000.se/auk/w.AuctionList?inL=&inC=WLPA&inA=20140812_1547&inWLPAAuctionType=AUCTION 27th Camera Auction] by [http://www.westlicht-auction.com/index.php?id=3&L=1 Westlicht Photographica Auction], in June 2015. The auction listing cites [http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=2846923A&KC=A&FT=D&ND=3&date=19580812&DB=worldwide.espacenet.com&locale=en_EP US Patent 2846923], ''High speed objective lens with anastigmatically flattened field'' filed 25 February 1957 and granted 12 August 1958 to Albrecht W. Tronnier as assignee to Farrand Optical Co., Inc. - patent archived at [http://worldwide.espacenet.com/?locale=en_EP Espacenet], the patent search facility of the European Patent Office.</ref> |
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| || 35mm<br>[[half-frame]]<br>and [[APS-C]] || f0.95 || f1.8 || f2.8 || '''f1.4''' because smaller format than 35mm requires faster lenses for achieving almost similar [[depth of field]] | | || 35mm<br>[[half-frame]]<br>and [[APS-C]] || f0.95 || f1.8 || f2.8 || '''f1.4''' because smaller format than 35mm requires faster lenses for achieving almost similar [[depth of field]] |
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| |} | | |} |
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| + | ==Notes== |
| + | <references/> |
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| [[Category:Lenses]] | | [[Category:Lenses]] |