Re: teleconverter experiment

2009-02-20 Thread Tim Øsleby
> Teleconverters, by default, always DEGRADE image quality; never improve > I'm also beginning to suspect that in some circumstances, my camera > body may be a limiting factor. > It depends on the light. If you are able to step down to the sweat spot of the lens/TC combo you will generally get goo

Re: teleconverter experiment

2009-02-19 Thread Adam Maas
On Thu, Feb 19, 2009 at 6:44 PM, Christian wrote: > Larry Colen wrote: > >> Another factor that also played a part is the 20km or so of atmosphere >> that I was shooting through: > > Yeah I guess I wouldn't be doing those kinds of images. Atmospherics are > always a problem. > >> I certainly don'

Re: teleconverter experiment

2009-02-19 Thread Godfrey DiGiorgi
Teleconverters, by default, always DEGRADE image quality; never improve it. Anytime you put something between your lens and your camera you are going to lower image quality. The question is: by how much? With matched converters like I have, not by that much, but with crappy third-party i

RE: teleconverter experiment

2009-02-19 Thread Bob W
> Teleconverters, by default, always DEGRADE image quality; > never improve > it. Anytime you put something between your lens and your > camera you are > going to lower image quality. Compared to what? If you want the perspective that the teleconverter gives you you have, as I see it, 3 op

Re: teleconverter experiment

2009-02-19 Thread Christian
Larry Colen wrote: Another factor that also played a part is the 20km or so of atmosphere that I was shooting through: Yeah I guess I wouldn't be doing those kinds of images. Atmospherics are always a problem. I certainly don't claim that the experiment was definitive. About all that I pr

Re: teleconverter experiment

2009-02-19 Thread Larry Colen
On Thu, Feb 19, 2009 at 03:54:09PM -0500, Christian wrote: # Really those are all pretty bad. I wouldn't be happy with any of them. I'm certainly not. I should probably also post some uncropped versions. # Perhaps it is also the white on white subject and your tripod/head # combo might not

Re: teleconverter experiment

2009-02-19 Thread Christian
Really those are all pretty bad. I wouldn't be happy with any of them. Perhaps it is also the white on white subject and your tripod/head combo might not be steady enough. Wind will play a factor too. I think getting better magnification with lenses and TCs is better than just cropping the