Search results for 'sensor cleaning' - page 89
100mm Macro Quandry
As far as I understand it, the term "macro" originally applied to equipement that would let you acheive 1:1 or greater magnification on the film/sensor plane. A lot of lenses with close focusing ability, but not true "maceo" lenses, have been sold as "macro" over the y...
Posted by Arthur Dent on 19/10/2006 - 15:48
100mm Macro Quandry
As far as I understand it, the term "macro" originally applied to equipement that would let you acheive 1:1 or greater magnification on the film/sensor plane. A lot of lenses with close focusing ability, but not true "maceo" lenses, have been sold as "macro" over the y...
Posted by photo*ist on 19/10/2006 - 23:39
100mm Macro Quandry
Well, I did say "This is an odd one, and depends on how you look at it!" :D Drew, the minimum focusing distance of the lens is not going to change - it's the same lens whatever body it's mounted on, after all. The reaon you could see 65mm width on your MZ5N, is because that's roughl...
Posted by Daniel Bridge on 21/10/2006 - 18:22
100mm Macro Quandry
Well, I did say "This is an odd one, and depends on how you look at it!" :D Drew, the minimum focusing distance of the lens is not going to change - it's the same lens whatever body it's mounted on, after all. The reaon you could see 65mm width on your MZ5N, is because that's roughl...
Posted by photo*ist on 21/10/2006 - 18:55
100mm Macro Quandry
Hi all, I thought I'd knock this up to help. in the above image, the larger (shaded) area relates to the size of the 35mm film plane, and the smaller area in the middle relates to the size of the digital sensor in comparison. (And no pedantry points for noticing I got the depth of ...
Posted by LiamD on 22/10/2006 - 13:22
What lens type retains ALL DS2 functionality?
Somebody will correct me if I have got anything wrong: All except the first series of AF lenses are identical in terms of the features they offer when used with your camera body. That means FA, DA, FAJ, D-FA lenses are effectively the same as far as you are concerned. The first AF lenses, d...
Posted by George Lazarette on 28/10/2006 - 09:32
Lens questions for my new k110D...
For $1000 you could buy the superb "Bigma"- the Sigma 50-500mm F4-6.3, which would do away with the need for a converter, and with the need to change lenses in the field, thereby reducing the chances of missing a shot and more importantly of getting gunge on your sensor. I may be wrong...
Posted by Gwyn on 29/10/2006 - 08:31
image quality between 31mm ltd & DFA 40mm on istD
I have both the FA31 & DA40 and I can happily report that there are no problems using the 31 on a digital body and it's at least as good as the DA40 (both are limited by the sensor in terms of resolution). It performs superbly on my *istD, with all the good points that you get using it on fi...
Posted by Reuben0 on 11/11/2006 - 18:32
pentax 16-45 vs. Sigma 17-70
did you try to shoot at the sun with the Sigma to test for flare resistance? Before I had my Pentax K100D I had a Canon 300D with a Sigma 17-70mm. The lens is very good indeed. I did not notice any problems with it. But the Sigma 17-70mm on my Pentax K100D is considerably sharper (because of the f...
Posted by Hythloday on 25/11/2006 - 10:26
Dismantling smc 70-210 lens.
Removing the front element is simple enough but if you don't use the correct tool you risk damaging it and the filter thread. Treat yourself to a lens spanner/wrench. Worth it's weight in gold. I've just rejuvenated a SMC-Pentax 400mm 1:5.6 lens by cleaning some fungus from the inside of the front e...
Posted by Mannesty on 26/11/2006 - 17:59
Macro Options for K10d
they list 7" but I _swear_ it focuses down to 2" or so manually Quoted focus distances are often measured from the film/sensor plane rather than the front element.
Posted by stevo on 29/01/2007 - 22:38
Fungus on SMC-FA 80-320
Kim, I'm hoping that the new lenses will be affordable. G That's why I said £1000 not the £1500 plus that the older ones were. They may try to price them just under the 4 figure sum so that it looks better. The 18-55 would be entry level at around £100, 16-45 for the enthusiast which is arou...
Posted by Kim C on 03/01/2007 - 19:37
K10D kit lens or FAJ 18-35?
Well, the FAJ 18-35 covers the full 35mm frame, but it doesn't have an aperture ring. So you can use it in "P" mode on most Pentax bodies, or on the Z1/Z1p you can adjust the aperture from the body. The DA 18-55 kit lens is a smaller, but heavier lens and covers the APS-C sensor range. ...
Posted by MattMatic on 03/01/2007 - 17:15
K10D kit lens or FAJ 18-35?
Mattie I got the 18-35 as a kit lens with my istD, it does the job, but I wouldnt rate it alongside my old manual primes, I personally found the lens a bit short, I found myself forever changing to my 28-80 (which was too long at the short end), as a result my sensor quickly got grubby, less of a...
Posted by fatspider on 03/01/2007 - 19:39
Clean sensor
I have a question to ask of all you lucky people with your myriad of lenses - How do you keep your sensor clean when you change your lenses? :? Also, I am considering replacing my DL2 kit lens and a Sigma 75-300 APO with one lens. I have seen a Sigma 18-200 when I have done a search through goog...
Posted by HowardJ on 11/01/2007 - 20:28
Clean sensor
I don't keep my sesnor clean is the simple answer. I always change lenses with the camera pointing down, to minimise dust, but it always gets in. I clone out the dust till it gets too bad, then use a Giotto's Rocket to blast the sensor, followed by my Visible Dust Artic Butterfly brush. Works fine....
Posted by Gwyn on 11/01/2007 - 20:39
Clean sensor
We have had our *istDs cameras for around 18 months and have never had to clean the sensor, nor have we had any dust marks. Change lenses as little as possible, always point the camera down when changing lenses, always switch the camera off when changing lenses. Avoid dusty environments. A le...
Posted by johnriley on 11/01/2007 - 23:36
Clean sensor
I change lenses I suppose more than someone with zooms as I now only have primes. I have had dust on my sensor since 3 months into Pentax DL ownership. Just recently more dirt was visible on the sky portions of images. I tried a blower with varying degrees of success what has worked is the Artic But...
Posted by SPB on 12/01/2007 - 18:16
Clean sensor
My *ist-D has been cleaned loads of times :P Have used Pecpads+Eclipse fluid, also sensor swabs with fluid. All work pretty well, but you can never get 100% of it out - so there's always the patch and clone tool in Photoshop! (Having seen a pro's 1Ds RAW file that was covered in stuff, I don't get...
Posted by MattMatic on 12/01/2007 - 18:28
Clean sensor
I remember having all sorts of issues with my *ist-D which I'd bought from SRS as one of their "A-Grade"... It ended up going backwards and forwards to Pentax UK to be cleaned 3 times before it was sorted. There were some 'orrible grubby marks on it :shock: Since then I've cleaned it ...
Posted by spirit_of_will on 12/01/2007 - 22:40
