Search results for 'uv filter' - page 170
Poll - who would £1000 for a full frame K10D?
When you see what Leica have managed to produce out of a "small" 10 MP sensor, there is a long way to go. The problem at the moment seems to be the thickness of the IR filter required. The problem would then remain of very wide angle lenses. If the smaller sensor had been adopted as "...
Posted by Kim C on 01/12/2006 - 09:28
K10D - I got mine!
I'm guessing the surface of the CCD could also make a difference - the coating perhaps, and almost certainly the thickness of the filter in front of the photo-sites. But I think the main cause is purely the fact that we look at images like never before - when we had slides we looked at them throu...
Posted by Daniel Bridge on 11/12/2006 - 17:50
K10D - I got mine!
Strictly speaking CA is a lens attribute. It will generally be worse in longer lenses. This fault will show regardless of what body the lens is used on. It is a function of the diffraction properties of the different glasses in the elements not being matched correctly and will show uniformly across ...
Posted by Kim C on 17/12/2006 - 15:37
Transparency copying with DSLR(positives and negatives)
I do have Nikon Coolscan IV, but find it quite slow to use. I guess a faster PC, which will have to wait till next year) may speed it a little, but most of the time is in the scanning, especially if using the ICE option (I suppose this is also processor bound). Before I got the film scanner, I di...
Posted by Taliety on 11/12/2006 - 13:31
DON'T BUY PENTAX DIGITAL LENSES!!!
For the friend who located the DA 200 on his LX camera I would like to ask if he used slide film or a negative one. If he used the negative one did he look at the negative strip to look for vigneting because the shop that printed his photos maybe cropped the images and as a result the black circle d...
Posted by Bob and his Pentax on 07/05/2008 - 22:27
Why I do not like non full frame DSLR's...a personal view..
To go back to Steve's original post, I agree that there is a problem with ultra wide angle for dSLRs. However, I don't think this has that much to do with the sensor size. Indeed, one of the most frequent criticisms of the Canon is the lack of wide primes! Anyway back to the APS sensor. First of all...
Posted by Kim C on 15/12/2006 - 10:50
Nikon D80 VS Canon Xti VS SOny A100 VS Pentax K10D
As an accessory, get a cable release for whatever camera you go for - makes work on a tripod easier and steadier! As this is your first SLR you are not restricted by having legacy lenses, but should you decide to go with pentax you will find that you can use all their older lenses (with some rest...
Posted by Ammonyte on 12/12/2006 - 19:48
Nikon D80 VS Canon Xti VS SOny A100 VS Pentax K10D
Thank you for your answers. I welcome more comments, if you have any. Especially the kind of lenses I should get in your opinions (brands and focal length). I'd like to know which lenses in those ranges are good and which are not so good. Same kind of things about the accessories. What brand of ...
Posted by starkillerz on 13/12/2006 - 01:34
DP rewiew K10D test
My instructor at the college is a canon guy , with the sharper is better mentality. I'm trying to sway him to the dark side. I submitted an unusal print for my mid term exam. He looked bewildered when I set up my lighting for a womans portrait with a snooted main, no diffuser and a gridded kicker...
Posted by Don on 16/12/2006 - 15:15
How many Pentax lens lines are present at the moment?
Welcome to the board :) For technical information: http://www.bdimitrov.de/kmp/index.html Optimised for Digital - there are two issues with lenses and digital. Firstly, because of the depth of the CCD and IR filter the image needs to be fairly well collimated. Film can produce a good image at ...
Posted by MattMatic on 19/12/2006 - 15:11
K100D mods (am I nuts?)
I know some people are hacking canons to remove the ir filter. trouble is, unless you have the tools and experience to work with inredible percision, there's little an average person can do. I'm playing around with a homebuilt lens that uses a bodycap, a bag/bellows of neoprene, a focus rail, and ...
Posted by Don on 26/12/2006 - 16:36
K10D -sharp or not?
Sharpness has absolutely nothing to do with the sensor. Sharpness is influenced by the lens and the software. Canon and Nikon over sharpen the images in their camera's which I think is a bad thing. Of courese sharpness depends on the sensor, and on the AA filter. As Nikon says (see link), sharpness...
Posted by Hythloday on 06/01/2007 - 16:19
K10D -sharp or not?
Don't lets get tied up in knots! It is a complex issue with various factors having various degrees of effect. Yes, the anti-aliasing filter will have an effect on sharpness and resolution (not the same thing), as will the processing, the lens, and indeed the final software operations performed by th...
Posted by johnriley on 06/01/2007 - 16:33
K10D - Infrared performance?
It's NIR or Near-Infra Red. This is the "visible" IR range not the thermal IR range we see in night vision equipment. The most popular NIR filter is the Hoya R72. Install this on your lens and you'll lose about 6-11 stops, so expect to use a tripod.
Posted by kcmadr on 08/01/2007 - 18:25
K10D - Infrared performance?
I wasn't aware that either camera was capable if IR pics, is there a specific mode or trick with the camera, or are we just talking about adjusting images in photoshop. The sensors in digital cameras are sensitive to IR 'light', but will have some degree of filtering applied to reduce the visible ef...
Posted by Daniel Bridge on 08/01/2007 - 18:30
K10D - Infrared performance?
I wasn't aware that either camera was capable if IR pics, is there a specific mode or trick with the camera, or are we just talking about adjusting images in photoshop. I have had good IR results from the *istD which is why I asked the question. You do need to compose and focus the shot before fi...
Posted by Mannesty on 08/01/2007 - 18:30
K10D - Infrared performance?
Some manufacturers, Canon particularly, filter out IR light very aggressively. My *istDS does respond quite well to using a Hoya R72 filter. The filter is opaque so it is necessary to focus first and then fit the filter, although you can point the camera and guess! Don't forget to alter the focus...
Posted by johnriley on 08/01/2007 - 20:34
K10D - Infrared performance?
any chance of getting anything like IR with a normal red (B&W) filter? or would I be wasting my time. BTW Very nice shot Tim
Posted by fatspider on 09/01/2007 - 20:30
K10D - Infrared performance?
Yes, definitely. You can use a red filter with IR film if you wish, or you can use one with digital However, you can more easily use Photoshops's Channel Mixer to emulate the IR effect. Increase red and green dramatically and reduce blue dramatically. Adjust to taste!
Posted by johnriley on 09/01/2007 - 20:43
K10D - Infrared performance?
stupid question, does the metering work at all with one of these filters on, do you meter without the filter and boost the exposure X stops, or do you just take a stab in the dark and adjust as apropriate from test shots? I've always been a bit tempted to try some IR, if the K10 is good for it perha...
Posted by Mongoose on 09/01/2007 - 22:51
