Search results for 'uv filter' - page 135
Lens Cleaning
"Awesome stuff. Crystal clear glass. I won't use anything else now." The thing is, you never know whether the feedback comments are genuine with things like that. FAWK, he just asks people to write some nice comments, or he makes it up. A stop and a half? For goodness sake... that implies that ...
Posted by ChrisA on 08/10/2011 - 13:25
Lens Cleaning
The OP just asked about cleaning lenses :shock: It seems that no one knows the difference between clean glass and dirty glass :shock: :mrgreen: I suppose porous is a bit too broad to describe the surface of glass? :shock: The correct term is hydrophilic The surface of glass when greatly ...
Posted by Algernon on 09/10/2011 - 12:23
Lens Cleaning
The straighforward answer is treat the rear element the same as the front element. Good idea John.... put a UV filter on it :shock: :wink:
Posted by Algernon on 09/10/2011 - 14:02
Lens Cleaning
It would probably be on a lens like this that you would gain several stops Algi, I hate to keep banging this gong, but you're driving me bonkers! :D Are you aware that a 1.5 stop gain means almost 3 times more light? So if the cleaning fluid gains you 1.5 stops just by removing muck from the s...
Posted by ChrisA on 09/10/2011 - 22:40
Lens question
Greetings once again Great Oracle, I am considering buying a sigma lens, the 18-200 or the 18-250; Does anyone here have hands-on experience or knowledge of either of these please? I know that the 18-200 comes in two versions, the stabilized one being a 72mm filter size as opposed to 62 on the...
Posted by Bobbinalorry on 09/10/2011 - 14:14
Advice on lens and other equipment
I am once again asking for advice from the experts on this forum (not necessarily from PentaxExpert :lol:). I have recently acquired an LX in great conditions (now being serviced) and with the camera I got a box of equipment that was used with it. I do not have use for most of it, and I would lik...
Posted by giofi on 10/10/2011 - 19:14
Recommend me a macro lens lens
I am gravitating towards the 100mm WR, but also wonder how satisfactory would the Raynox be with the 18-135 WR. I am very happy with my 18-135 WR despite my initial skepticism and some negative press. Although the Raynox is supposed to be among the best of its kind, I've seen numerous test result...
Posted by MarkTaylor on 25/10/2011 - 18:12
Recommend me a macro lens lens
The Tamron is also a cintilla sharper wide open, slightly better FL for portraits, and the hood is implemented makes more sense than the way Pentax have done it (at full lens extension, the Pentax hood will offer no real benefit surely? As with most macro lenses around 100mm, the front element of th...
Posted by MarkTaylor on 25/10/2011 - 23:42
18-250mm lenses
Hi Vic I have the Pentax 18-250mm and have always assumed that the Tamron one was identical, but will obviously bow to John's greater experience on that. The Pentax version usually costs £20-30 more when I've seen it for sale, which isn't that often. They both come up on Ebay from time to time...
Posted by milamber on 30/10/2011 - 10:59
ND Filters
Sorry 'tis me again. I need (definitely a need and not a want this time:wink:) a grey ND filter to enable me to continue my experimentation with long exposures. Can someone guide me in the right direction - I'm completely out of my depth. There are square ones and round ones and lots of differ...
Posted by Charlotte on 11/11/2011 - 21:24
ND Filters
round ones screw in, ok for full NDs but if you want to use a graduated it can sause problems getting the horizon correct. Square one come in 3 types, A,P,Z, in increasing size of holders. Basically, An adaptor ring screws onto your filter thread, a holder fits over the ring, the filter slots...
Posted by davex on 11/11/2011 - 21:51
ND Filters
You should try these if its for long exposures Neutral Density 0.9 Filter or Hitech 85 ND Grad Filter - ND 0.9 (HARD Edge)OR A ND10 these work well Grad Filters work better on a landscape shot when the sun is height but you what to keep the ground as is :D I hope that helps:D:D
Posted by puma on 11/11/2011 - 22:18
ND Filters
The Lightcraft Workshop Fader 2 is a neutral density filter with variable light stopping capability. You turn the filter like a polariser and it reduces the light variably, all the way up to ND400 level. The more I got into using ND filters, the more I needed in a stack, in order to reduce the light...
Posted by grahamwalton on 11/11/2011 - 22:43
ND Filters
Thanks Dr.O, handy to know about the welding glass. 8) Thank you shaun, I think I could do with a grad filter as well that will stop me having problems with high lights in the sky. :D They look good Graham I'll look into those in more detail when I've saved some pennies maybe. I've ordered...
Posted by Charlotte on 11/11/2011 - 22:58
ND Filters
SRS do these no idea if they are any good, if anyone can shed some light I'd be interested too?
Posted by SteveEveritt on 12/11/2011 - 09:28
ND Filters
You turn the filter like a polariser and it reduces the light variably Presumably they do this using polarisation. Could two polarisers be stacked to achieve the same effect/functionality?
Posted by sorted78 on 14/11/2011 - 20:41
ND Filters
my two cheap-ass polarizers didn't give a great result Fair enough - I've got two of similar provenance to yours, so will look out for a proper ND filter instead!
Posted by sorted78 on 15/11/2011 - 20:44
Sigma HSM AF
Picked up my Sigma 150-500 lens up yesterday, Lincoln LCE most helpful and did me proud even gave me a Sigma DG UV filter in with deal. Tried it outside today at 4pm but had to have ISO at 800 so images very very grainy. However found it focused fast and IS seemed OK as long as shutter speeds above ...
Posted by davidrobinson on 16/11/2011 - 21:34
The cheap 2.4 35mm... or spend elsewhere?
Here you go Ken. This reflection moved to the left in three shots. When I first noticed it I removed the filter but that made no difference. I had the same problem with the 50mm but that is ok without the filter,I am using the same rubber lens hood on both lenses. Despite this slight ...
Posted by DOIK on 16/11/2011 - 13:27
The cheap 2.4 35mm... or spend elsewhere?
I immediately thought 'classic ghost image from a filter' as you probably did too. Next time I'm near some bright pin points of light I'll see if I can replicate it.
Posted by gartmore on 16/11/2011 - 13:33
