Search results for 'uv filter' - page 155
Pentax A 35-70 f4 smc
It is indeed an excellent lens. Some would grumble about it having two rings but I prefer that. It's a bit chunky at 58mm filter ring diameter and it is a bit heavy for its size, being full of glass but the results are first class. Here are a couple from this time last year ..........
Posted by davidwozhere on 09/05/2016 - 00:11
In praise of the DA*300 and 1.4TC
For most of this type of image then a little bit of extra software blur filter on the background could easily give the bokeh effect desired. The subject would be masked off using a duplicate layer. It's a fairly simple process. I'd say the real big choices between these items comes down to price and...
Posted by McGregNi on 15/05/2016 - 20:16
In praise of the DA*300 and 1.4TC
For most of this type of image then a little bit of extra software blur filter on the background could easily give the bokeh effect desired. The subject would be masked off using a duplicate layer. It's a fairly simple process. I'd say the real big choices between these items comes down to price and...
Posted by davidstorm on 15/05/2016 - 20:42
FA 28-105mm F3.2-4.5
I find this lens pretty sharp if stopped down a bit and provided no filters are used. I have a Jacobs UV filter which I used for protection and a polariser. I have found that both seem to degrade the image - the polariser seemed to affect the focus - I tried to photograph a small flower this mornin...
Posted by miles500 on 16/05/2016 - 23:44
K50/f1.2 before and after
I bought a bargain K50/f1.2 here in the UK for £99 - couldn't believe my luck (yes, it was me). The glass was in very good condition: no marks or fungus, but the body was pretty beat up with the filter ring distorted and the metal of the nose creased where it must have been dropped. So I contacted B...
Posted by microlight2010 on 16/05/2016 - 10:20
Is the 150-450mm sharp at 450mm wide open?
Hi Neil, If it is clear that this is repeatble under controlled conditions; Eg: taking 20 test shots of a static subject -10 off at 5.6 and 10 off at 6.3 , with the camera fixed on a tripod , with the focus points set at 9, then I agree, there is an equipment issue, most likely the lens. My 15...
Posted by Daronl on 26/05/2016 - 01:38
New HD PENTAX-DA 55-300mm f/4.5-6.3 ED PLM WR RE
Hi and welcome to the forum. If you've just purchased a lens and it proves to be faulty I can only think of one thing to do with it... return it the the supplier for replacement or refund. Are you able to try it on another compatible body just to be sure? With the older 55-300's some used to find...
Posted by JAK on 10/08/2017 - 21:14
SMC Pentax - M 28-50mm f3.5-4.5 Lens
35 - 70mm: I couldn't agree more -- either a manual 'M' series or 'A' series one (but get the bigger, constant f4 version even though it's slower) or the F series auto focus. The whole lot of them are fantastic performers and they all come up on Ebay regularly. Also, if you see one, the 'A' zoom 35-...
Posted by davidwozhere on 17/12/2016 - 00:53
Irix 15mm 2.4
95mm filter thread!
Posted by cardiffgareth on 14/11/2016 - 12:52
Issue with ND filters on Pentax 12-24mm with Pentax K3
Dear Pentaxians, I recently bought a used Pentax 12-24mm f4 lens to start into wideangle photography, so far very good results with this lens mounted on my K3. :) As I wanted to start taking long exposure shots during daylight, I bought two ( expensive...) brand new 77mm ND filters, one ND8 an...
Posted by y_vigourel on 13/12/2016 - 19:51
Issue with ND filters on Pentax 12-24mm with Pentax K3
If the vignetting is more noticeable at 12mm than at 24mm then tis likely that the second filter is actually intruding into the field of view, ie. it is being 'seen' by the lens? Alternatively, if you are also using a lenshood on top of two filters, then that could intrude into your field of view.....
Posted by cbrog on 13/12/2016 - 20:47
Issue with ND filters on Pentax 12-24mm with Pentax K3
Yes what I meant by physical vignetting, was indeed that the second filter is intruding the field of view. No solution there but it is a bit too bad... No problem with the lenshood, but I noticed that it is shaped quite tight, at 12 mm if the lenshood is not properly set in place ( i.e slighty rota...
Posted by y_vigourel on 13/12/2016 - 21:01
Issue with ND filters on Pentax 12-24mm with Pentax K3
Would part of the problem be that larger filters are needed for such a wide angle lens? The vignetting is probably the filter mount encroaching into the shot. Try a shot with the mount without filters to see if that is the problem. 77mm is fine for standard lenses, maybe 100 mm filters are needed. O...
Posted by RobL on 13/12/2016 - 23:32
Issue with ND filters on Pentax 12-24mm with Pentax K3
Hadn't read your post properly as usual, I take it you are using round screw-on filters. My comment still applies, I guess you are seeing the filter frames so you would be better with a larger square format filter. You will be able to use the 77mm filters on other lenses, with a step-up adaptor if n...
Posted by RobL on 14/12/2016 - 13:10
Issue with ND filters on Pentax 12-24mm with Pentax K3
Hello guys, First of all thanks for all your answers. -Indeed I am using 77mm round filters, and when stack together they block the field of view, so I am good to buy a 16 stops ND filter (more difficult to find, any recommendation ?) That's explain the "vignetting". - Meanwhile regarding t...
Posted by y_vigourel on 14/12/2016 - 18:11
Honest thoughts on the 28-105?
I wasn't overly impressed with my 24-70, but now I have fine tuned the AF it is very good. I have only tried it out indoors at iso 3200, 1/250 sec, f2.8 at 50 to 70mm, but I think it should be good at other ranges. I had to give it +7 adjustment. The 15-30 is a cracker but the filter holder plus ...
Posted by screwdriver222 on 19/12/2016 - 12:27
Honest thoughts on the 28-105?
I wasn't overly impressed with my 24-70, but now I have fine tuned the AF it is very good. I have only tried it out indoors at iso 3200, 1/250 sec, f2.8 at 50 to 70mm, but I think it should be good at other ranges. I had to give it +7 adjustment. The 15-30 is a cracker but the filter holder plus ...
Posted by edin_togger on 19/12/2016 - 12:45
Pentax 55-300mm f/4.5-6.3 da Plm Wr
I find that with the 50% greater resolution and no moire filter everything is seen in much more detail including of course sensor noise. How much sharpening/ contrast you apply can have effect too. i reckon 1600 ISO on K3 similar to 3200 on my old K5 for High ISO noise. I have auto noise...
Posted by wvbarnes on 20/02/2017 - 14:21
Pentax 55-300mm f/4.5-6.3 da Plm Wr
.....but unfortunately the K3 is not as good at high ISO as the K5 .....or am I wrong? Your gallery shots suggest you don't seem to go over ISO 800 anyhow so is that really an issue? No AA filter = sharper looking shots, by a long way, noise or no noise. When cropping your bird shots you'll have m...
Posted by JAK on 20/02/2017 - 14:44
Pentax 55-300mm f/4.5-6.3 da Plm Wr
.....but unfortunately the K3 is not as good at high ISO as the K5 .....or am I wrong? Your gallery shots suggest you don't seem to go over ISO 800 anyhow so is that really an issue? No AA filter = sharper looking shots, by a long way, noise or no noise. When cropping your bird shots you'll have m...
Posted by michaelblue on 20/02/2017 - 16:56
