« on: December 24, 2012, 12:58:12 AM »
Advanced bracketing. That's good news for the 7D
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In the last 12 to 24 months we've seen an array of new lenses from Tamron and Sigma that seem to be laying down the gauntlet to Canon/Nikon in the area of providing good IQ that perhaps started with the 50/1.4 from Sigma. Why the Sigma 50/1.4? Because it tests better than both the Canon and Nikon equivalents albeit, it is more expensive however when Canon replaces the 50/1.4 with a 50/1.4 IS, the Sigma will be cheaper.I was reading up on the Sigma 50/1.4 recently. The review on The Digital Picture (TDP) and reviews by some customers on B&H were somewhat disappointing. I'm referring to the comments about autofocus consistency (and the Canon 50/1.4 is no champ in this either).
TDP says, "Inconsistent focus accuracy is definitely the downside of this lens. It is possible that another copy of this lens would focus more consistently, but my guess (helped by feedback from others) is that my lens is representative of this model. Thus, unless you are primarily using manual focus or shooting at narrow apertures (f/4), I suggest buying the Canon EF 50mm f/1.4 USM Lens instead."
The ISO12233 chart crops on TDP suggest that the Sigma is a bit sharper, but the Imatest results in LensRentals.com's "Great 50mm Shootout" suggest that the Canon 50/1.4 is a bit sharper. Imatest results on Photozone.de also suggest that the Canon is mostly sharper.
Isn't that what Jim Rockford kept in his trunk next to the small printing press?
If you use a smartphone, you can easily just take a picture with it on the location you currently are and synchronize the gps data in Lightroom.
Even if LR4 has now map support, I'd still advise to use Geosetter (write current metadata in lr, tag with geosetter, read changed metadata in lr) because it adds the named location information to the coordinates which is very nice for later searches in lr.
If you use a smartphone, you can easily just take a picture with it on the location you currently are and synchronize the gps data in Lightroom. Maybe that is an alternative for you. It could be complicated when you're driving around a lot but it might save you some of ya dolla dolla bills.