3 لنز جدید سیگما

[rezafh]

سلام

Sigma 10-20mm f3.5 EX DC HSM

Focal length 10-20mm
Maximum aperture f/3.5
Minimum aperture f/22
Lens construction 13 elements / 10 groups
Angle of view 102.4° - 63.8°
Closest focus distance 24cm / 9.4in
Maximum reproduction ratio 1:6.6
Aperture blades 7
Filter attachment size 82 mm
Lens Mount Sigma, Canon, Nikon(D), Sony(D), Pentax
Dimensions 87.3mm × 88.2mm (3.4in × 3.5in)
Weight TBC
Supplied accessories • Case
• Petal-type Hood

Sigma 18-50mm f2.8-4.5 DC OS HSM

Focal length 18-50mm
Maximum aperture f/2.8 - f/4.5
Minimum aperture f/22
Lens construction 16 elements / 12 groups
Angle of view 69.3°-27.9°
Closest focus distance 30cm/11.8in
Maximum reproduction ratio 1:4.1
Aperture blades 7
Filter attachment size 67 mm
Lens Mount Sigma, Canon, Nikon(D), Sony(D), Pentax
Dimensions 74mm × 88.6mm (2.9 in × 3.4in)
Weight 395g/13.9oz.
Supplied accessories • Case
• Petal-type Hood

Sigma 50-200mm f4-5.6 DC OS HSM

Focal length 50-200mm
Maximum aperture f/4 - f/5.6
Minimum aperture f/22
Lens construction 14 elements / 10 groups
Angle of view 27.9°-7.1°
Closest focus distance 110cm/ 43.3 in
Maximum reproduction ratio 1:4.5
Aperture blades 8
Filter attachment size 55 mm
Lens Mount Sigma, Canon, Nikon(D), Sony(D), Pentax
Dimensions 74.4mm × 101.9mm (2.9 x 4 inches)
Weight TBC
Supplied accessories • Case
• Bayonet type hood

http://www.dpreview.com/news/0903/09030303sigma50mm200mm.asp
http://www.dpreview.com/news/0903/09030304sigma18mm50mm.asp
http://www.dpreview.com/news/0903/09030305sigma10mm20mm.asp

لنزهایی هستند که توسط سیگما معرفی شدند
امیدوارم 10-20 جدید کیفیت اپتیکی بهتری داشته باشد با توجه به اینکه طرفدار زیادی داره

همچنین لنزهای 18-250 , 24-70 OS سیگما که در فتوکینا 2008 معرفی شده بودند برای مونتهای Sigma, Canon, Nikon, Pentax و Sony قابل تهیه خواهند بود

موفق باشید

[farhad44]

سلام

اين 20-10 جديد خيلي جذابه. اميدوارم با قيمت مناسبي وارد بازار بشه. من يكي خريدارشم.

[KHAKSAR]

سلام. جالبه من امروز بعد از ظهر قصد خرید 20_10 سیگما رو داشتم که به فردا موکول شد. حالا با معرفی ورژن جدید به نظر دوستان ارزش صبر کردن داره؟ (البته معلوم نیست سی گل کی این لنزو عرضه کنه؟)

[Mashhadi Vahid]

سلام

رویوی SLR Gear در مورد Sigma 18-50mm f/2.8-4.5 DC OS HSM

http://www.slrgear.com/reviews/showproduct.php/product/1249/cat/31

Conclusion
The Sigma performed well in our tests, with good results for sharpness wide open, and even better when stopped down to just ƒ/4. CA is a bit high at 18mm and distortion is a complicated mix of barrel and pincushion, but nothing overly objectionable.

So who's this lens made for? Image stabilization is more important for Sigma, Nikon and Canon, where it's not built into the camera body; it seems to be a good replacement for the standard 18-55mm kit lens, offering a slightly larger maximum aperture (ƒ/2.8-4.5 instead of ƒ/3.5-5.6). The Nikon and Canon kit lenses are fairly competent, so it's going to come down to personal tastes which are beyond the scope of this review.