joejack951

You get more noise by having less exposure, either using a smaller aperture or using a faster shutter speed ("exposure" being the result of aperture and shutter speed). ISO gives you the image...

At the risk of starting a war, by the correct definition of exposure, "properly exposed" means that you achieved the DOF you desired and used the slowest possible shutter speed allowing the most...

"If I buy a decentered lens I give it back."

How are you checking for decentering? Unless you are using equipment similar to Roger's you are very likely getting inconsistent and/or unreliable...

I certainly think it's relevant but you wouldn't believe the backlash that results in attempting to bring up the topic. Sorry for being so vague but I was trying to pile on with your "appropriate...

How about discussions of the limitations of the protection offered by the standard plastic covered styrofoam bicycle helmet on a cycling forum?

Hmmm, an 800mm f/5.6 VR was recently released at $18,000. What do you suppose just the 1200mm f/4 part of your lens might retail for?

Sigma made a 200-500/2.8, weighing almost 35 lbs., and for about $26,000 you can own one: http://www.bhphotovideo.com/c/search?Ntt=sigma+200-500&N=0&InitialSearch=yes&sts=ma&Top+Nav-Search= A...

Another thought is that an f/4 lens on FX yields the same DOF as an f/2.8 lens on DX for equal fields of view. Depending on which DX camera you had, you'll likely still be ahead on high ISO...

But keep in mind that lens will also be manual focus only, though manual focus with a fisheye is generally quite easy.

Based on the sample photos I've seen from that phone, no, it would not have been nearly as good.

I hate scrolling as much as the next guy but I understand why sometimes people quote whole messages, particularly if posting from a mobile device. I've even given up trying to trim a quote on a...

Those elements are in four groups, one of which is stationary, and three which move together (focus, zoom, and stabilization). Compared to any other zoom lens with stabilization, there is no more...

Nikon gives 5 years on US lenses.

But a dedicated ultra wide angle will get you so much wider than 15mm. It takes 12mm on DX to match 18mm, the starting point for ultra wide angle zooms on FX. I think pairing a Tokina 11-16/2.8...

Canon makes one (15-85) but it's also expensive and with their 1.6X crop factor it doesn't go any wider than a 16mm lens for Nikon.

The public? No, there are apparently quite a few interested buyers who have put up money to fund the project in exchange for an actual product. Lomography still needs to deliver that product before...

And how did you conclude that? Do you know the capacity of all their vendors or something that the rest of us don't?

Here's a June 2008 prediction that the 200mm Micro might be replaced soon: http://nikonrumors.com/2008/06/20/plausible-prediction-of-nikon-announcements.aspx/ My recommendation: if you want a 200mm...

Sell some (useless :-)) sneakers for $550. Spend $450 for a 5DC and another $100 on a 50mm f/1.8 and keep your T3i. Now you have wide angle, portrait, and video capabilities with the T3i, and full...

What matters for creating images of equal brightness is the density of the light on the image sensor which is determined solely by the f-stop. An 18mm f/1.8 (if it existed) would work just as well...