All Forum Comments
Comment by George Lazarette posted on Lens storage at 13/05/2005 - 22:39
I have been told that lenses should be stored bottom up, with the aperture wide open (or on "A"), so as not to stress the iris spring.
George
Comment by George Lazarette posted on Lens storage at 13/05/2005 - 19:39
Comment by George Lazarette posted on extension tubes at 06/02/2005 - 21:07
The good news is that just about all prime macro lenses (even Sigma!) are very good. The Pentax ones are all superb, and the Tamron 2.5 90 is very highly regarded.
Ignore macro zooms. Sharpness is paramount.
Longer macro lenses are generally better for bugs, which is why second-hand ones sell for more than the otherwise excellent 50mm lenses.
Auto-focus and aperture-automation tend to be pretty unimportant, so something like the Pentax-M 100mm f4.0 is a pretty good, and pretty economical, choice.
And, of course, you can still use the extension rings if you want to get REALLY close.
George
Comment by George Lazarette posted on extension tubes at 02/02/2005 - 06:41
The light in this picture is rather dull, but some quick adjustments to contrast, gamma, saturation, and sharpening make it look very much better.
If you don't have a program that enables you to do this, download Irfanview (and the plugins). Its free at http://www.irfanview.com
Then load the program, open the picture and go into the "Image" menu and then the "enhance colours" menu. Using the sliders, take the gamma to 1.2, the contrast to 20, and the saturation to 70. Click OK, then sharpen. Save the result, and you'll be pleasantly surprised.
Comment by George Lazarette posted on optio s40 autofocus at 30/01/2005 - 17:05
If you shoot with the horizon closer to the centre you will minimise the effect, although I concede that will not necessarily help the composition.
Dull days are the enemy of photography. You have found a nice scene; go back to it if you can in the early morning or the evening on a sunny day and shoot it again. You'll be surprised at the difference.
Comment by George Lazarette posted on Pentax S30 distortion and general quality? at 29/01/2005 - 17:29
Comment by George Lazarette posted on 1.4x teleconverter at 14/02/2005 - 11:42
A 1.7 adaptor turns an inexpensive 200mm M lens into 340mm with limited AF. You have to pay a huge amount of money for a good 300mm lens, so whilst the adaptor may not be as good as the real thing, it's a fraction of the price, and the quality isn't too bad.
Comment by George Lazarette posted on 1.4x teleconverter at 28/01/2005 - 10:12
http://www.pcinspector.de/smart_media_recovery/uk/welcome.htm
Mark's site contains some useful stuff:
http://www.robertstech.com/pentax.htm
G
Comment by George Lazarette posted on compact flash cards at 25/01/2005 - 09:01
Just don't record anything else on the card meanwhile.
Comment by George Lazarette posted on compact flash cards at 23/01/2005 - 06:48


Absolutely right. That's what I meant to say. It's been a hard week!
G