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- 05.02.2008
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Malo smo zaboravili na novi 50mm 1.8 STM Počela isporuka pre par dana, ima već i poneki utisak na netu, ja baš malopre naleteo na ovaj komentar sa Amazona http://www.amazon.com/Canon-50mm-1-8-STM-Lens/dp/B00X8MRBCW
"The EF 50 1.8 STM is the long awaited upgrade to the EF 50 1.8 II, i.e., nifty-fifty. I have history with the nifty-fifty--owned three copies--and couldn't wait to audition the first redesign since 1990. The 50 1.8 STM uses the same basic optical formula as its older sibling, but with tweaks to lens coatings and improved close focus ability. However, the major improvements are build quality and AF. Here's my take on the EF 50 1.8 STM after a couple days of shooting with a 6D and 70D.
The 50mm prime is called a "normal" lens because the 46 degree field of view (FOV) on full-frame cameras (e.g., 6D) yields a natural perspective, making it ideal for candid and street photography. On APS-C crop cameras, e.g., Rebels or XXD series, FOV is equivalent to a short telephoto (80mm), making it well suited for portraits or achieving a little extra reach. Plus, this lens is so small people ignore it, making candid photography less nonintrusive than bulky zooms.
IMAGE QUALITY: The F1.8 aperture yields a brighter viewfinder and faster shutter speeds in low light than zooms. Wide open on my 6D it's sharp center frame. Corners are a little softer and darker than the center but equalize by stopping down to F2.8 or higher. Longitudinal chromatic aberration (CA) has been reduced significantly over the nifty-fifty.
BOKEH: I mainly bought this lens for the smooth bokeh at F1.8 or 2.0. The soft whirl of an out of focus background makes subjects pop. The 7-blade diaphragm maintains a pleasant circular shaped aperture even when stopped down with brilliant highlights in the background. At F1.8 the images take on a quasi painterly quality due to reduced contrast. A glowing quality is typical within the swirl of smooth bokeh. Sample images were taken with a 6D at or near F1.8, the exception being the buildings, shoot at F5.6.
The sun-star effect, i.e., stopping down to F16 to 22 to create rays around the sun, doesn't work well with the new rounded blade diaphragm. It worked great with the angular five-blade diaphragm in the nifty-fifty!
AUTO FOCUS is achieved by front element extension (nested barrel) and significantly faster and quieter than the EF 50 1.8 II. Focus is accurate and rarely misses even in low light. The polar opposite of EF 50 1.8 II AF. However, compared to an inner focus (IF) USM design, e.g., EF 85 1.8 USM, 50 1.8 STM AF falls on the slow side.
STM focus during video is not blazing fast but is buttery smooth and ideal for touchscreen pulls and Movie Servo on my 70D. Focus sound is audible in a quiet room but may be picked up by the camera's built-in mic during video. The workaround is to use an external mic or outboard audio (or prefocus).
MANUAL FOCUS is "focus-by-wire"; i.e., the ring is a switch for activating focus and not mechanically coupled to the lens. Full-Time Manual (FTM) allows AF override without flipping a switch: simply turn the MF ring. Unlike USM lenses, FTM is only active when the shutter button is half-depressed.
BUILD: It's smaller than the nifty-fifty but more robust and slightly heavier: metal mount, sturdy plastics and black statin finish. There's no distance scale and it uses an odd filter size, 49mm. Wish it took 52 or 58mm filters like other Canon small primes but I suspect it was designed to be as small as possible.
The end of the barrel has a groove for a bayonet mount hood. The dedicated hood, Canon ES-68, wasn't available when I bought the lens. However, because a bayonet hood attaches to the outer barrel, it protects the nested inner barrel from frontal impact (nested barrel extends over a half inch). Minor force to the nested barrel is a well known cause of AF failure in previous 50mm designs, so use of a bayonet hood is a good idea.
FINAL BLURB: This lens is nimble, petite and a joy to operate. Canon got everything right with this redesign: accurate and snappy AF, sturdy build and, most significantly, vivid and sharp images wide open."
Ostaje pitanje da li sačekati da dođe kod nas, ili jednostavno naručiti iz inostranstva. Ima ga i na Amazon.de, ali je tamo 150 evra http://www.amazon.de/Canon-50mm-STM...=UTF8&qid=1432344755&sr=8-1&keywords=50mm+STM
"The EF 50 1.8 STM is the long awaited upgrade to the EF 50 1.8 II, i.e., nifty-fifty. I have history with the nifty-fifty--owned three copies--and couldn't wait to audition the first redesign since 1990. The 50 1.8 STM uses the same basic optical formula as its older sibling, but with tweaks to lens coatings and improved close focus ability. However, the major improvements are build quality and AF. Here's my take on the EF 50 1.8 STM after a couple days of shooting with a 6D and 70D.
The 50mm prime is called a "normal" lens because the 46 degree field of view (FOV) on full-frame cameras (e.g., 6D) yields a natural perspective, making it ideal for candid and street photography. On APS-C crop cameras, e.g., Rebels or XXD series, FOV is equivalent to a short telephoto (80mm), making it well suited for portraits or achieving a little extra reach. Plus, this lens is so small people ignore it, making candid photography less nonintrusive than bulky zooms.
IMAGE QUALITY: The F1.8 aperture yields a brighter viewfinder and faster shutter speeds in low light than zooms. Wide open on my 6D it's sharp center frame. Corners are a little softer and darker than the center but equalize by stopping down to F2.8 or higher. Longitudinal chromatic aberration (CA) has been reduced significantly over the nifty-fifty.
BOKEH: I mainly bought this lens for the smooth bokeh at F1.8 or 2.0. The soft whirl of an out of focus background makes subjects pop. The 7-blade diaphragm maintains a pleasant circular shaped aperture even when stopped down with brilliant highlights in the background. At F1.8 the images take on a quasi painterly quality due to reduced contrast. A glowing quality is typical within the swirl of smooth bokeh. Sample images were taken with a 6D at or near F1.8, the exception being the buildings, shoot at F5.6.
The sun-star effect, i.e., stopping down to F16 to 22 to create rays around the sun, doesn't work well with the new rounded blade diaphragm. It worked great with the angular five-blade diaphragm in the nifty-fifty!
AUTO FOCUS is achieved by front element extension (nested barrel) and significantly faster and quieter than the EF 50 1.8 II. Focus is accurate and rarely misses even in low light. The polar opposite of EF 50 1.8 II AF. However, compared to an inner focus (IF) USM design, e.g., EF 85 1.8 USM, 50 1.8 STM AF falls on the slow side.
STM focus during video is not blazing fast but is buttery smooth and ideal for touchscreen pulls and Movie Servo on my 70D. Focus sound is audible in a quiet room but may be picked up by the camera's built-in mic during video. The workaround is to use an external mic or outboard audio (or prefocus).
MANUAL FOCUS is "focus-by-wire"; i.e., the ring is a switch for activating focus and not mechanically coupled to the lens. Full-Time Manual (FTM) allows AF override without flipping a switch: simply turn the MF ring. Unlike USM lenses, FTM is only active when the shutter button is half-depressed.
BUILD: It's smaller than the nifty-fifty but more robust and slightly heavier: metal mount, sturdy plastics and black statin finish. There's no distance scale and it uses an odd filter size, 49mm. Wish it took 52 or 58mm filters like other Canon small primes but I suspect it was designed to be as small as possible.
The end of the barrel has a groove for a bayonet mount hood. The dedicated hood, Canon ES-68, wasn't available when I bought the lens. However, because a bayonet hood attaches to the outer barrel, it protects the nested inner barrel from frontal impact (nested barrel extends over a half inch). Minor force to the nested barrel is a well known cause of AF failure in previous 50mm designs, so use of a bayonet hood is a good idea.
FINAL BLURB: This lens is nimble, petite and a joy to operate. Canon got everything right with this redesign: accurate and snappy AF, sturdy build and, most significantly, vivid and sharp images wide open."
Ostaje pitanje da li sačekati da dođe kod nas, ili jednostavno naručiti iz inostranstva. Ima ga i na Amazon.de, ali je tamo 150 evra http://www.amazon.de/Canon-50mm-STM...=UTF8&qid=1432344755&sr=8-1&keywords=50mm+STM