All Forum Comments
Comment by johnriley posted on Loan items at 10/01/2010 - 13:05
Soium lighting is used as I understand it because it's relatively unobtrusive and encourages the eyes to open (good for night driving) and not to close down. The worst thing about it IMHO is that as soon as it rains all the road markings virtually disappear.
I've seen different lighting in Chipping Sodbury some years ago, and those were mercury vapour lamps I think. Very blue, quite another problem.
However, the scene is the scene, so it's only within certain limits that we can change it. I would suggest trying for dusk or dawn, probably the former, when people start to turn on their lights but maybe the sodium lights are only just coming on. A mix of slightly more natural light and some building lights might be a lot easier to correct.
In addition, many night shots benefit from having some light left in the sky.
Comment by johnriley posted on Sodium Street lighting - Filter? at 10/01/2010 - 12:58
For casual use, the *istDS was good, the K10D very poor and the K20D I haven't actually tried. The R72 filter is the one, but don't forget that lens focus needs to be adjusted for IR light. So focus manually, realign that distance to the IR focusing mark on the lens if it has one.
If there is no IR focusing mark then you'll have to guess, just making the focusing point slightly closer than it would normally be. This could be tricky as there may be some variation with lens design, but as a starting point a 28-70mm FA zoom means that at 70mm the infinity focus point for IR is around half way from infinity to 12 feet. At 28mm it is about 12 feet.
This shows that the sharpness point can vary quite a lot from the visual point of focus. It is worth trying though as good IR images are very atmospheric.
Comment by johnriley posted on Anyone here keep their 6MP SLRs for infrared? at 10/01/2010 - 12:39
So is that statement an impatient one? Or is it to be taken as a friendly confirmation of agreement with one side of the argument? Or is it offered slightly tongue-in-cheek to lighten the mood of a brewing storm?
IMHO without the smileys we could never be sure.
Comment by johnriley posted on A question about online forums (nothing to do with photography) at 10/01/2010 - 11:35
Comment by johnriley posted on Using masks for Wedding special effects at 09/01/2010 - 21:24
It involved winding up Jessops as was and making a new company I think.
Comment by johnriley posted on Jessops winding up.... The End??? at 08/01/2010 - 23:15
You need a RAW converter and a simple one was provided with your camera - Pentax Photo Laboratory.
Comment by johnriley posted on PEFs as picture files ? at 08/01/2010 - 23:11
Comment by johnriley posted on Lowepro Vertex 100 Premium Backpack £49.99 at 08/01/2010 - 15:42
Comment by johnriley posted on Loan Topic at 08/01/2010 - 12:42
Obviously indeed it's most relevant where DOF is limited, but that's what it was designed for.
Comment by johnriley posted on Hasselblad "true focus feature" at 08/01/2010 - 11:08


Nobody else gets involved, and nobody takes any resposibility apart from the posters. Caveat Emptor. Let the "buyer" and indeed the "seller" beware.
I can see this could be full of potential problems and sooner or later you will lose your item. I suggest it would be better to just sell your item to someone and let them sell it on when they've finished with it. You don't have to charge much, but you might find someone buying it to put on eBay....
Be careful out there.....