dSLR Dad

Imaging Resource has published their review of the SIGMA 18-250mm F3.5-6.3 DC OS HSM lens:

Like most ”vacation” zooms, the trick is to know the parameters where they function best. Sigma’s latest iteration of this lens offers a bit more telephoto performance, for which the integrated optical image stabilization is crucially useful. Unfortunately the lens’ maximum aperture decreases quickly as the lens is zoomed out, to the point where at 80mm, you’re using a ƒ/5.6 lens. This design allows the lens to be kept as small as it is, but at that point you’re needing either a sunny day, an external flash, or a steady hand (even with the image stabilization) to get reasonably sharp photos.

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Popular Photography Magazine has published their lens test report of the Sigma APO 50-150mm F2.8 II EX DC HSM:

Rest on its laurels? Not Sigma. Just look at the updated version of its bright 50–150mm f/2.8 digital-only (DC) zoom ($675, street), part of the company’s top-drawer EX family of glass. Its predecessor performed admirably in the Pop Photo Lab just two years ago (January 2007). Since then, the company’s engineers have twisted, squeezed, and tweaked its design in an attempt (we’re guessing) to catch up to the optical superiority of Tokina’s remarkable 50–135mm f/2.8.

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Imaging Insider has completed their review of the smc PENTAX DA Star 55mm F1.4 SDM Prime Lens:

There isn’t much to add that we haven’t already covered: excellent results for sharpness, great resistance to CA, little to no corner shading or distortion. Quick and silent autofocus; rounded aperture blades; and to top it all off, a great lens hood that you probably won’t even need given the lens’ shrouded design. Pentax has produced a fantastic lens with the 55mm ƒ/1.4 DA*, however the only sticking point could be its high price point: at over $700, it’s one of the most expensive 50mm-style lenses of any manufacturer. Based on our test results however, you definitely get your money’s worth.

You can read the entire review over at SLR Gear.com.

I’ve begrudgingly kept my Canon EF 50mm f/1.8 II Lens, mainly because the actual lens assembly pops-out of the housing from time-to-time so I can’t sell it. At $80 it is a great value, but it’s not the sharpest knife in the drawer (until f/2.8). I was looking at the Canon 50mm f/1.4 USM Lens (available at Amazon and B&H Photo), but it seems somewhat soft at the corners, even on a digital body. It also doesn’t have the same high quality feel as Canon’s excellent EF 85mm f/1.8 USM Lens (which I loved, available at Amazon and B&H Photo).

Well, leave it to Sigma to announce a quality, large aperture alternative, the new 50mm F1.4 EX DG HSM standard lens. It will be offered in Sigma, Canon, Nikon, Pentax^*, Sony^* lens mounts. The * means if your Pentax or Sony camera body does not support HSM, auto focus will not be available. With any luck, this 50mm f/1.4 will be match the quality of their fantastic Sigma 30mm f/1.4 EX DC HSM Lens. Hopefully, Sigma will release this at a street price under $300.

Excerpts from the Sigma Press Release (2008-3-18):

• Standard lens with large maximum aperture of F1.4.
• It creates sharp images with high contrast and ensures superior peripheral brightness.
• Incorporates molded glass aspherical lens, perfectly correcting coma aberration and creating superior image quality.
• Super multi-layer lens coating reduces flare and ghosting.
• Hyper Sonic Motor HSM ensuring silent, high-speed AF. (more…)