Tamron introduces 'ultra-telephoto' 18-400mm F3.5-6.3 zoom lens
$(document). ready(function() { SampleGalleryV2({"containerId":"embeddedSampleGallery_0293456581","galleryId":"0293456581","isEmbeddedWidget":true,"standalone":false,"selectedImageIndex":0,"startInCommentsView":false,"isMobile":false}) }); Tamron has introduced what it is calling the 'world's first ultra-telephoto all-in-one zoom lens,' the 18-400mm F3. dpreview.com »