Forgive me if this is more obvious than I expect, but I recently purchased a Sony a57 Camera, which I really, really enjoy. I will be doing some traveling, and purchased a Sigma 18-250mm 1:3.5-6.3 Macro HSM lens to pair with my camera. I have read that many people will use "lens profiles" to correct their images when they import them into Aperture. How can I find a lens profile for my lens? [more inside]
posted by smitt
on Aug 12, 2013 -
Professional certificate in Project Management or Green Belt in 6 Sigma, which one is better for the resume or the career in general? [more inside]
posted by modoriculous
on Feb 12, 2013 -
I'm going to rent a lens for my Nikon D5100 for the weekend to shoot a bunch of youth (8-10 year olds) soccer games. What would be the best lens at a reasonable price? [more inside]
posted by Doofus Magoo
on Sep 3, 2012 -
Have you ever heard of Sigma Alpha Pi? Not a frat or sorority, but a "society of leadership and success" is what they call themselves. I was asked to join my university's chapter. Is it worth it? [more inside]
posted by emilyclaire
on Aug 20, 2011 -
My Sigma camera lens stopped working - what's causing it and what can I do? [more inside]
posted by komara
on Feb 14, 2011 -
Sigma 18-125mm f/3.8-5.6 AF DC OS HSM vs. Canon EF-S 15-85mm f/3.5-5.6 IS USM, besides the obvious zoom range differences is the Canon really
worth twice the Sigma? I've checked a number of reviews and it doesn't look like the Canon's advantage is as clear cut as the price would suggest.
posted by tommasz
on Dec 28, 2010 -
new lens from Sigma (18-250 zoom) comes in a Pentax mount. Pentax puts their DSLR image stabilization in the camera body and not in the lens like Nikon or Canon. Yet the description for all the lenses is the same - image stabilization in the lens. Is this a case of cut&paste product descriptions or would using this lens on a Pentax camera have double image stabilization (both lens & camera body)? [more inside]
posted by GuyZero
on Nov 2, 2009 -
I've been thinking of buying a new point-and-shoot camera for a while. I've had some lame experiences with previous point-and-shoots (blurry photos, bad colour balance, etc), so I'm asking the green for some advice. [more inside]
posted by doctor.dan
on Jun 19, 2009 -
Exposure difference between two lenses at the same aperture?
I just noticed that using the programmed exposure on my d80 with two different lenses at the same aperture produces different shutter speeds - even though the scene is the same. [more inside]
posted by FidelDonson
on Dec 2, 2008 -
Photofilter: Which lens should I buy?
I'm in the market for a new prime. I've narrowed it down (for various reasons) to either Canon 85/1.8 or the new Sigma 50/1.4.
Do any fellow photogs out there have experience with either one or have a recommendation. Eventually, I want to go with the 85/1.2II but it'll be awhile before I have the cash.
I'm looking for something with good bokeh as I like to shoot wide open and get short DOF. Currently, I'm using an old OM Zuiko 50/1.4 to achieve that but since it's not autofocus, I miss more in-focus shots than I like.
In case you need to know to answer I shoot on a 30D and a 5D.
posted by damiano99
on Aug 23, 2008 -
I bought the Pentax K100D dSLR, partly on recommendations from here, and I love it. I have the 18-55 kit lens and the 50-200 zoom lens, which I mostly use. Now I would like to buy a faster in-between zoom, somewhere from 24-28 at the low end to 75-135 at the high end. I am trying to figure out whether to buy a Pentax, Tamron, or Sigma lens and am getting confused with all the contradictory reviews. The Tamron 24-135 is praised to the skies by some and trashed by others. I am leaning towards the Tamron 28-75 but would like something closer to 100 mm. Any advice?
posted by blue shadows
on Nov 22, 2007 -
Calling all IT professionals! Teflon recruiters! Scrum masters! Project overlords! I'm curious about the current state of certifications. PMP, CAPM, Six Sigma BB, CSP, that kind of thing. [more inside]
posted by cavalier
on Jun 27, 2007 -
IANAS. How can I average two standard deviation values? [more inside]
posted by DU
on Apr 18, 2007 -