Search results for 'uv filter' - page 78
16-50 Purple Fringing
Has anyone tried using an Ultraviolet filter to cut down PF/CA? Vic.
Posted by xbow on 11/03/2008 - 18:53
Can anybody explain this effect?
they are indeed a diffraction effect caused by a non-circular aperture. The effect becomes stronger the more you stop down, because the aperture becomes both less circular and smaller. If you like the effect, stop down when there are strong light sources present and it will apear if you don't ...
Posted by Mongoose on 15/03/2008 - 10:01
Lenses for photographing storms
Welcome to the forum. It depends on what sort of distance you will be photographing the storms from. I can imagine both distant images of raging storms that might need a long lens and also closer ones where you would want the sky in and would need a wide angle. The 16-45mm is a fine lens and w...
Posted by johnriley on 16/03/2008 - 12:07
SMC A-Zoom 28-135 F/4
The 24-90 that is, it was toast, the filter was smashed to bits and all the insides came loose. Fortunately it was insured and I got a new one. One thing I did learn from that was, never attempt to change lenses when walking through a small French village at 2am when you've had FAR too much to drink...
Posted by JohnMcD on 19/03/2008 - 09:49
cheap ebay filters
Eric, For polarising, I use a Kood P-style polariser and with the Cokin slimline adapter you should be fine at 77mm. It's certainly easier having one polariser that fits all lenses through the P-filter system ;) (Think I bought it from www.srbfilm.co.uk Just checked and it's about £25 for a P...
Posted by MattMatic on 20/03/2008 - 12:37
cheap ebay filters
Try a polarising filter on your 10-20 before you buy as it can have some wierd affects esp at the wide end. I got my local jessops to let me go outside with one on and take a few shots and I didn't like the results esp. at 10mm. Being so big (77mm) it won't be cheap so make sure it's worth it.
Posted by MX veteran on 20/03/2008 - 16:05
cheap ebay filters
Just bear in mind that you would be placing a cheapo £4.80 filter infront of £300 of glass - personally wouldn't risk cheap/unknown filters simon
Posted by simonkit on 20/03/2008 - 18:23
where to buy lens hoods online
do their own range of rubber hoods, scroll to the bottom of the page. These screw onto the filter thread and, being rubber, can be popped back if not wanted.
Posted by beakynet on 20/03/2008 - 14:04
where to buy lens hoods online
...You could even make a petal shape! I wouldn't be surprised though if the screw-thread end caused a problem. Even a thick filter can cause vignetting with this lens.
Posted by iceblinker on 20/03/2008 - 16:29
Pentax Lenses
The perfect companion to your 18-55mm could be the pentax 50-200mm. Very compact, same filter size, very very good quality
Posted by johnriley on 25/03/2008 - 21:31
Pentax SMCP-FA 80-320mm f/4.5-5.6 Lens
reckon you got a good deal there, Pentax glass for less than the price of the Tamron 70-300. One point to note, my 80-320 HATES UV filters. I use UV filters for protection on a lot of my lenses, but this one goes bare. It looses a LOT of contrast as soon as any light at all hits that filter. O...
Posted by Mongoose on 03/04/2008 - 13:54
My DA* 50-135 is a 'Write Off' according to Pentax
Recently noticed that the front element of my DA* 50-135 had received a couple of scratches, one deep enough to cause alarm. Enquired at SRS today about replacement cost for a new front element, he rang up Pentax whilst I was there and was told that they could not repair it because it was sealed...
Posted by Hyram on 03/04/2008 - 20:39
My DA* 50-135 is a 'Write Off' according to Pentax
I keep a filter on the majority of my lenses and I started to think it might not be such a good idea... When I was at Arnhem zoo a few weeks ago I noticed my K10D was struggling to focus with my Sigma EX 70-200 (I had no issues previously)...also found it was difficult to remove the lens cap Whil...
Posted by Pwynnej on 03/04/2008 - 21:38
My DA* 50-135 is a 'Write Off' according to Pentax
The alternative is to keep the hood on the lens and let that take any knocks and not risk a splintering filter scratch the front element if it breaks or becomes dislodged.
Posted by chirpy on 03/04/2008 - 21:51
My DA* 50-135 is a 'Write Off' according to Pentax
Thing is, I always keep the hood on, so have no idea at all how it actually happened. Could have even been a stone kicked up into the lens, just dunno, but get the feeling that if a filter was there, that could have broke and damaged the element just as bad. The good thing is, there is no sign of...
Posted by Unlocker on 03/04/2008 - 23:01
Sigma vs Tamron 70-300 - First impression
Received my Sigma 70-300 APO DG Macro today & have tried a few shots to compare it against the Tamron LD DI equivalent I already own. First impressions... The sigma is slightly lighter/smaller - not a great difference though Sigma uses 58mm filter, Tamron 62mm Build quality - th...
Posted by simonkit on 04/04/2008 - 11:52
Sigma 150mm macro
I doubt it's a 'new' version, apparantly it was the last one that Sigma (UK) had in stock. I guess any new version will have HSM focussing. Not much use for macro work as I only ever use manual focus. The 150mm lens is 1:2.8, the 180mm is a little slower at 1:3.5. My holy grail was a Pentax...
Posted by Mannesty on 10/04/2008 - 23:31
Sigma 150mm macro
[quote:e0dcda672c="Mannesty"]I doubt it's a 'new' version, apparantly it was the last one that Sigma (UK) had in stock. I guess any new version will have HSM focussing. Not much use for macro work as I only ever use manual focus. The 150mm lens is 1:2.8, the 180mm is a little slower at 1:3.5. ...
Posted by George Lazarette on 11/04/2008 - 01:30
Sigma 150mm macro
Clarky, You know George is right, he's always right :lol: If I hadn't just shelled out for the Sigma (poor substitute) I'd have a go at it. That lens is arguably one of the finest on this planet, and the next. As the advert goes, If Carlsberg made lenses, they'd probably make this one. ...
Posted by Mannesty on 11/04/2008 - 23:23
Sigma 150mm macro
...or http://cgi.ebay.co.uk/72mm-to-58mm-Step-Ring-Stepping-Filter-Adapter-Ring_W0QQitemZ110218338633QQihZ001QQcategoryZ30040QQrdZ1QQssPageNameZWD1VQQ_trksidZp1638.m118.l1247QQcmdZViewItem Dan EDIT: Forget that, it's from Hong Kong (and you'd probably already seen it. :roll: )
Posted by Daniel Bridge on 11/04/2008 - 23:47
