Its been a rather uneventful past four weeks for the Photopurity website. The editor went on a three week vacation to Europe and upon his return found his site and its host under a massively coordinated DOS attack. The attack overwhelmed the provider and prompted a complete rebuild of their hosting solutions which is still [...]
Sigma 24-70mm F/2.8 EX Macro Review
Photopurity has taken some time to review the 24-70mm F/2.8 EX DG Macro lens from Sigma. When it comes to non-OEM lenses you’ll find that many photographers downplay the performance of Sigma and Tamron the two largest third party optic vendors. Several will claim that their lenses are too soft or that their AF is slow, unreliable or noisy. I’ve handled dozens of optics from both Sigma and Tamron (as well as Tokina and a few others) and my general conclusion is that this reputation is born of either ignorance or perhaps a ...
Tamron 28-105 F/2.8 Lens Review
This is a restored article from early 2010. Photopurity has spent about three months using a Tamron 28-105mm F/2.8 zoom in connection with both a Full Frame Canon 5D II and an APS-C crop sensor in the 550D (Rebel t2i). After using this lens for a variety of purposes including one wedding and one convention event, we thought we would finally get around to performing a full review of its performance. First things first, this lens has been discontinued by Tamron and is no longer manufactured. It was produced in all the major mounts during its active ...
Canon L 70-200mm F/2.8 IS USM Lens Review
The big monster has arrived. The Canon L series 70-200mm f/2.8 max aperture zoom in all its white colored splendor! Photopurity has taken some time to spend with the pro series lens from Canon and give an in depth user review. Canon's current lens lineup generall fall into one of these three categories: Budget Consumer Lens Mid Range Consumer Lens Professional Series Lens The budget series are usually (but not always) the kit lens that are included in bundles with the Canon Rebels and such. They are cheap, made primarily of plastic and offer average image quality. This of course is a generalization that may not ...
Tamron 28-300 f4.0-6.3, VC LD XR Di Review
Updated: November 9th, 2009 After spending close to three weeks with this lens on a vacation to Europe, Photopurity has made some revisions to this review to more accurately reflect the performance the lens gives in real life results. Photopurity has obtained a production copy of the Tamron 28-300mm f/3.5-6.3 XR Di VC LD lens to review. First let's try to break down all those different abbreviations in the lens title. XR = eXtra Refractive Index Glass Di = Digitally Integrated VC = Vibration Compensation LD = Low Dispersion Of these four two letter abbreviations, there's really only two that I care to see as part of ...
Canon 70-300mm F/4-5.6 IS USM
Today, Photopurity takes a look at the Canon 70-300mm f/4-5.6 Image Stabilized, USM lens. The 70-300mm is a popular telephoto zoom range among all the many manufacturers and almost every optics manufacturer has their own offering of this popular range. Nikon features the 70-300mm VR, Sigma their own 70-300 non OS and will soon be introducing the Sigma 70-300 Optically Stabilized lens. Canon actually has several lens in this range but the three most popular are: 1. Canon 75-300mm IS Lens - This was the first lens to incorporate Canon's Image stabilization and was popular during its time although popular opinion ...
Editorials
Canon 1D MKIV and Nikon D3S
Well well well, a lot can happen in two weeks. In the past couple of weeks both Canon and Nikon have released brand new top level DSLR camera models. The Canon 1D MKIV is a crop factor camera utilizing an APS-H sized sensor. (See this article on the Crop Factor) while the Nikon D3S features [...]
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Canon L 70-200mm F/2.8 IS USM Lens Review
The big monster has arrived. The Canon L series 70-200mm f/2.8 max aperture zoom in all its white colored splendor! Photopurity has taken some time to spend with the pro series lens from Canon and give an in depth user review. Canon’s current lens lineup generall fall into one of these three categories: Budget Consumer Lens Mid [...]
