Wednesday, September 9, 2009

The Choice Is Made

So I just got back from some whirlwind travels, and they have made the decision of which item to review first.

I carried a camera bag the entire time, with my camera, three primes, a zoom, a flash, and several other accessories. Although I love my primes, the zoom was really the heavy lifter, as it always has been so I will be taking a critical look at it first.

In short, 18-200 VR review coming soon. I am going to try and do, from this point out, at least one review a week. They may be faster but without a deadline, I will continue to work on them periodically and never be satisfied enough to call them "done."

2 comments:

Green Water Media, LLC said...

Hi... just caught some of your commentary about star trails. Our question is this.... should we use noise reduction or not? We are shooting a D300. We have used interval timer (hit the 30 sec barrier) and went bulb-manual with 5 min. exposures (7 of them) and it looked good. Trying to understand whether or not to use noise reduction... please reply to bret@huishproductions.com

Thanks

MrBook2 said...

Sorry for the delay in replying, real life intruded...

In my experience, the built in camera noise reduction is only kind of helpful. What basically happens (if you know a lot about how CCDs work, this will all make sense, YMMV) is that if you take a 5 minute image, the camera immediately takes a 5 minute "dark" image. Think of it as a 5 minute picture with the shutter closed. This creates an image with pretty much the same noise as the original image but with none of the light. It then subtracts off the dark image from the real image. This means that you are going to be taking twice as long for all your images. The other option, for this kind of noise cancellation, is to take a single "dark" yourself (by leaving the lens cap on) and then take all of your other images normally. Then you can subtract off the dark image from all of the light images later, in software.

There are other kinds of noise reduction, that use the image itself to try and smooth out the noise. Some work better than others, and they may or may not help.

I know that isn't the best answer ever, but I hope it helps.