All Forum Comments
Comment by petrochemist posted on Pentax Photo Gallery at 02/11/2011 - 08:23
see how retro it looks !
I wouldn't have called it heavy?
are we talking about the same lens ?
That's not the F100-300, that Dangermouse specifically referred to. Pentax have made several incarnations, I believe that ones the silver FA which apparently has a rather lightweight plastic body.
Comment by petrochemist posted on pentax 100-300 v 55-300 at 31/10/2011 - 07:14
Comment by petrochemist posted on Pentax 250-600mm Big Glass at 30/10/2011 - 01:10
Comment by petrochemist posted on FOC: A couple of 49mm skylight filters at 27/10/2011 - 11:39
I got my U-360 from UQG optics, do be aware though that they pass significant amounts of IR too, which digital cameras are more sensitive to. (I think even those with strong hot mirrors).
In addition many lenses will themselves absorb significant UV, uncoated lenses with minimal glass are your best bet unless you can afford (& find) one of the ultra rare quartz lenses Pentax made.
Good luck!
BTW Klaus (AKA kds315) is now a member & is very much an expert in UV photography. His website is a great source of information on it.
Comment by petrochemist posted on Wanted: UV pass filter at 26/10/2011 - 22:53
Actually, no. It looks better, which is why people do it.
See how much better this one looks.
G
In a large block of text it can make it easier to read to increase sentance spacing, but a double space is IMO excessive.
I think some fonts do this by defining the full stop to have a partial space after it, so that [full stop][space] becomes [stop][long space]. It doesn't work well fopr every use of the full stop though!
Increasingly software developers seem to be employing auto formatting - which can end up taking ages to correct, back to what is wanted/needed!
Comment by petrochemist posted on Spam at 26/10/2011 - 11:13
I have to admit I don't find them particularly useful, I was hoping they'd give the kids a better view of power boat racing - whilst I play with the camera. Unfortunatly the local powerboats never had their second outing.
IIRC mine quote a 5X magnification, as 50mm is roughly normal view (on 35mm these were from the film days after all) that seems remarkably similar.
Looking at the link you give the Kenko unit does look MUCH flashier, probably had considerably better grade optics (but in the playing I've done with mine the optics have never seemed limiting) and mine don't have the tripod mount (though my bigger lenses do anyway).
I'd certainly rate it as an expensive toy. I find a camera body works quite well as a scope, with the added ability to take a picture & zoom in digitally...
Check out, & the PK model review on the other forum.
Comment by petrochemist posted on Kenko Spotting Scope Adaptor at 25/10/2011 - 11:39
I am looking for AF.
I know everyone says macro should be done with MF, but having tried load of combinations, I am rubbish at it.
Bear in mind that 'Catch in focus' can effectively turn a MF lens into AF - hold down the shutter release & sway gently backwards & forwards through the focus, and the camera should take it when it's focused.
DOF is minimal so camera movements of less than 1mm are usually critical...
Comment by petrochemist posted on Recommend me a macro lens lens at 24/10/2011 - 23:58
You should complain to Peak. They deserve the chance to correct any mistakes.
Comment by petrochemist posted on Dirty pictures at 24/10/2011 - 18:36
Comment by petrochemist posted on FOC: A couple of 49mm skylight filters at 24/10/2011 - 13:17

