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by Bob Atkins Overall the Tamron SP AF11-18mm F/4.5-5.6 Di-II LD Aspherical (IF) shows good performance. Sharpness is consistant across all apertures and focal lengths, flare is very well controlled and vignetting is very slight. There is visible chromatic aberration and barrel distortion, especially at the shorter focal lengths. However in extreme wideangle lenses of this type such aberrations are probably to be expected. Although coverage is only enough for an APS-C sensor camera at 11mm, the lens will mount and operate on any EOS body. Though there will be corner vignetting at 11mm, coverage increases to full frame at around 14-15mm, though there are no guarantees on image edge quality as the lens will be operating outside its design parameters there. Still, I think this is a better option than EF-S lenses, which can only be mounted on EF-S bodies (Digital Rebel, Digital Rebel XT and EOS 20D). The APS-C coverage is sufficient for any Nikon or Konica-Minolta DSLR and the Tamron SP AF11-18mm F/4.5-5.6 Di-II LD Aspherical (IF) is available in those mounts as well as Canon EOS. The lens appears to be well constructed and is among the smallest and lightest lenses covering this focal length range. It's supplied with a hood (optimized for use on APS-C sized sensor cameras) and comes with the standard 6 year Tamron warranty. Purchasing through the following links helps to support photo.net. In our experience Amazon.com offers great service, is trustworthy and has a generous 30 day return policy. They also have excellent partners that offer competitive prices.
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Tamron predstavio 2 objektiva isključivo za D-SLR [napisao janimir. 17 Ožujka 2005.] Poznati proizvođač melenih objektiva velikog raspona za razne SLR aparate je predstavio svoja prva dva objektiva dizajnirana isključivo za primjenu na digitalnim zrcalnim aparatima s čipom "APS-C" veličine (16x24mm). Prvi objektiv koji će se na tržištu pojaviti ovih dana je AF 18-200mm f/3.5-6.3 XR Di-II LD Aspherical (IF) Macro koji može izoštriti na minimalnoj udaljenosti od 45cm pružajući makro sliku omjera 1:3.7, težine tek 398 grama s filter navojem od 62mm. Sastavljen je od 15 leća u 13 grupa, vidnog kuta od 75 do 8°. "Bajoneti" će odgovarati Canonovim, Nikonovim, Pentaxovim i Minoltinim digitalnim SLR fotoaparatima. Najavljena je cijena od cca 500 Eura. Drugi objektiv bi se trebao pojaviti u drugoj polovici godine, a riječ je o SP AF 11-18mm f/4.5-5.6 Di-II LD Aspherical (IF) ekstremno širokokutnom objektivu težine tek 355 grama s filter navojem od 77mm. Moguća cijena potonjeg još nije poznata, a iz Tamrona ističu njegov nov dizajn za smanjivanje aberacija i unutarnjih refleksija koji uz 3 hibridne asferične leće i dvije leće niske disperzije rabi i nove XR (Extra Refractive Index) leće. Njegov dizajn pokriva vidni kut od 103 do 75° a sastavljen je od 15 leća u 12 grupa. Bit će dostupan s "bajonetima" za Nikonove, Canonove i Minoltine d-SLR fotoaparate. plaćeni oglasi: cheap phone card m.personalcashadvance.com