Search results for 'sensor cleaning' - page 122
Choice
If I had to pick between 50mm and 90mm, I'd stick with the 50, especially on APS-C. I'm unconvinced that the Tamron makes a good portrait lens. Slightly too long - esp on crop sensor - and almost too sharp! It's a very fine macro lens, and can be used successfully for non macro shots, but wit...
Posted by JonSchick on 07/07/2010 - 00:17
Choice
I'm unconvinced that the Tamron makes a good portrait lens. Slightly too long - esp on crop sensor - and almost too sharp! It's a very fine macro lens, and can be used successfully for non macro shots, but with limitations: not least how long it takes to focus. That's absolutely correct... 90mm i...
Posted by Pentaxophile on 07/07/2010 - 13:49
Choice
I'm unconvinced that the Tamron makes a good portrait lens. Slightly too long - esp on crop sensor - and almost too sharp! It's a very fine macro lens, and can be used successfully for non macro shots, but with limitations: not least how long it takes to focus. This is where the DFA 100 has a sli...
Posted by MrCynical on 07/07/2010 - 14:14
Choice
I have just written up the article for those who would like an introduction to these issues.
Posted by rparmar on 07/07/2010 - 17:20
pentax M vs pentax A
the base ISO on the 6MP sensor (as used in the *ist series and the K100/110) is 200, it can't go lower than that. Outside on a sunny day you may find that f/2 is unusable, but indoors or at night that extra stop will suddenly be a godsend. I have owned several 50s, from the M f/2 to the FA f/1.4 ...
Posted by Mongoose on 07/07/2010 - 11:00
focus problems
Thanks for the replies. The focusing problem seemed to become worse when I started using my newly acquired 77 ltd so thats why I asked if a lens could have a fault that could cause this. After googling I found that the autofocus mechanism was under the reflex mirror and so I thought if this is...
Posted by kiwao on 09/07/2010 - 10:38
sigma 170-500
It's the film model not the DG so the IQ isn't as good. wrong the iq is no different, Perhaps you would like to explain further the basis of that statement? Are you saying that Sigma are telling porkies when they say: DG (Digital) Lenses: The most suitable lenses for 35 mm film single-lens re...
Posted by Algernon on 15/07/2010 - 17:25
sigma 170-500
[quote:3496ace15f="Algernon"]It's the film model not the DG so the IQ isn't as good. wrong the iq is no different, Perhaps you would like to explain further the basis of that statement? Are you saying that Sigma are telling porkies when they say: DG (Digital) Lenses: The most suitable lenses ...
Posted by pentaxanne on 15/07/2010 - 19:46
K7 First steps...
Glad to hear you like it! As you're moving from a different brand, can I prempt two of the most common questions we hear from new people on pentax forums? If the camera is off and you rotate it in your hands, it's normal (though doesn't happen with every single camera, so an absence is also no pr...
Posted by Cuchulainn on 24/07/2010 - 12:05
What is the best lens for fashion model photograhy
You should read my article . As far as focus goes, simply learn to use manual. It works well for models and other subjects that are not moving quickly.
Posted by rparmar on 20/07/2010 - 13:07
Pentax 50 -200 DA ED f4 - f5.6 lens and K110D
Simply question really, is it compatible? Sorry if it sounds daft, but there is so much confusing info around about sensor sizes and TTL / PTTL metering, I thought I'd check here. Of course if anyone can sugggest an alternative I am interested too. Thanks Nick
Posted by Nickaird on 19/07/2010 - 18:30
Best Lens for Pentax K-x
Just to flesh out Stefan's excellent observations on the 55-300 a little further, if I may: The things they took out are. - the hood I would say you don't need this to begin with anyway (wait till you actually see some flare, then decide whether you can cope, or whether you really need it! I'v...
Posted by BigJacko on 25/07/2010 - 19:58
Best Lens for Pentax K-x
The things they took out are. - the hood I would say you don't need this to begin with anyway (wait till you actually see some flare, then decide whether you can cope, or whether you really need it! I've not seen any yet on mine!) And yes, you can get various hoods, as described above. But the hood...
Posted by Anvh on 26/07/2010 - 17:57
Best Lens for Pentax K-x
The K-x and the 'kit' 18-55mm DAL are very well matched, and a lovely combination. I bought mine (from SRS) almost six years ago and have enjoyed using them. It was not until I bought a 'Limited' prime from a fellow-member that I was disappointed to find that the image definition with the DA f/ 2.8 ...
Posted by OldTaffy on 13/08/2016 - 14:46
wanted: filters!
Just a thought. My Tokina 80-400 was frustratingly soft, so I removed the Hoya filter one night to find the inside surface rather cloudy. On cleaning and replacing the filter, the results were better. The lens is still a bit soft, though. Regards
Posted by sam-joseph on 28/07/2010 - 11:53
wanted: filters!
Just a thought. My Tokina 80-400 was frustratingly soft, so I removed the Hoya filter one night to find the inside surface rather cloudy. On cleaning and replacing the filter, the results were better. The lens is still a bit soft, though. Regards Hi Sam - have you tried it without the filter at all...
Posted by JonSchick on 28/07/2010 - 12:06
K24 colour rendition
I have always found that older, pre-digital, lenses tend to produce lower contrast images than new lenses do. I feel this is likely to be the result of a combination of changing fashions among photographers for what a "good" image should look like, and the higher reflectivity of digital sensors c...
Posted by Mongoose on 28/07/2010 - 08:36
K24 colour rendition
It looks like a dirty lens to me, probably the rear element. Just give it a good cleaning and try again. It should be better with a clean, but I would be surprised if it's as good as the 18-55WR (same as Mk.2) I've yet to see any old WA lens that's as good as the Mk.2 Kit Lens or even a good Mk. ...
Posted by Algernon on 28/07/2010 - 08:37
K24 colour rendition
It looks like it needs stripping down and cleaning. It might not be worth it, possibly get a few quotes and weigh up the cost.
Posted by Algernon on 28/07/2010 - 10:52
K24 colour rendition
It comes down to a simple calculation - how much did the lens cost, how much will it be worth when cleaned, and how much does professional cleaning cost? In the case of a 50mm f2 with fungus costing £5 from ebay I principally bought it to learn how to fix lenses. It was really simple to fix and w...
Posted by Dangermouse on 31/07/2010 - 12:34
