All Forum Comments
Comment by nathanever82 posted on Lens Comparison - Advice needed at 23/08/2009 - 21:14
Comment by nathanever82 posted on Lens Comparison - Advice needed at 23/08/2009 - 21:13
Comment by nathanever82 posted on Lens Comparison - Advice needed at 23/08/2009 - 21:09
Comment by nathanever82 posted on Lens Comparison - Advice needed at 23/08/2009 - 21:05
RIght, here is a difficult one. I have been considering some of my lenses, and I don't want to bias your comments by saying what I have shot with in this series. I kindly ask you don't look at the exif, in order not to compromise your judgment.
Below are test shots taken with 2 lenses, at f2.8 , f4, f5.6, f8, f11, f16, f22. All photos feature lens 1 on the left, and lens 2 on the right. THese are the other details.
Pentax K7
Av
Spot metering
Single frame
SR off / on tripod
ISO 100
ALl photos are shot in Jpeg, and straight off camera without any processing (in order not to compromise anything with photoshop or ACR raw)
What I would like from you, is a thorough examination of the photographs, and your thoughs regarding the differences of the two in each one of the apertures.
(I can't get the files to upload on photobucket without compression.THey are jpegs saved for web, 20mb each, but once uploaded, this is the result...)
f2.8
[IMG]http://i517.photobucket.com/albums/u332/nathanever82/28.jpg[/IMG]
f4
[IMG]http://i517.photobucket.com/albums/u332/nathanever82/40.jpg[/IMG]
f5.6
[IMG]http://i517.photobucket.com/albums/u332/nathanever82/56.jpg[/IMG]
f8
[IMG]http://i517.photobucket.com/albums/u332/nathanever82/8.jpg[/IMG]
f11
[IMG]http://i517.photobucket.com/albums/u332/nathanever82/11.jpg[/IMG]
f16
[IMG]http://i517.photobucket.com/albums/u332/nathanever82/16.jpg[/IMG]
f22
[IMG]http://i517.photobucket.com/albums/u332/nathanever82/22.jpg[/IMG]
Comment by nathanever82 posted on Lens Comparison - Advice needed at 23/08/2009 - 20:59
Comment by nathanever82 posted on Ex Demo K-7 from SRS on Ebay for £899 plus pp at 23/08/2009 - 15:51
The K-7 is in another league altogether. Completely different type of camera, and huge improvement in performance, speed, handling, features...
good luck!
Comment by nathanever82 posted on k7 v k20 at 23/08/2009 - 15:49
I find the conversion a bit flat, not really contrasty enough, and not particulary significative.
But what hurts the most is the fact that the original in colour is such a gorgeous picture, that I would never consider desaturating. Why don't you work just a little bit on the colour version, it will give you a much more pleasent result.
Good stuff
Comment by nathanever82 posted on Is this an OK B&W conversion at 21/08/2009 - 15:55
does the Kenko 1.5 converter work with the DA* SDM's ? like the 50-135 ???
WHat about the pentax teleconverter?
BTW - i've also stopped considering other lenses, but that's because I just bought a K7!!!!!!!
Comment by nathanever82 posted on Too many lenses at 21/08/2009 - 10:52
... but i'm married too, and that makes me very very old.
(As the teens I work with tell me every day...)
Comment by nathanever82 posted on PENTAX Users Age *****POLL*** at 19/08/2009 - 22:57

