Search results for 'sensor cleaning' - page 676
Sodium Street lighting - Filter?
Smeggy, the lee filter is a colour correction filter for white balance for sure! It change the sodium colour to daylight. The lee site has a big hint: Film Type: Daylight (5500K) And the colour looks precisely the same as the singh-ray so I really can not recommend them for digital. Sorry :...
Posted by Smeggypants on 03/01/2010 - 01:11
Hasselblad "true focus feature"
Ok, Pentax, something to add to future bodies :) "Due to the physics of an SLR-camera, the off-center focus points that are offered are all clustered relatively close to the center of the image. To set focus outside of this center area, the photographer is still forced to focus first, and th...
Posted by golfdiesel on 07/01/2010 - 20:06
Anyone here keep their 6MP SLRs for infrared?
Indeed HG, but if your serious in it then it might be worth it. :D I wonder if you can remove the RGB filter of the sensor without much problems and what the algorithm would make of it... With an IR filter you don't capture blue and green so no need to have a filter on that so with IR you will h...
Posted by Anvh on 10/01/2010 - 12:11
Anyone here keep their 6MP SLRs for infrared?
Hi Stefan - yes you can get the camera converted (costs more than the camera though!) and you have the advantave of being able to used handheld shutter speeds. Lens coatings don't help - it's a filter on the sensor that stops cameras from being able to do fast IR shots, and that needs to be removed...
Posted by JonSchick on 10/01/2010 - 12:13
Pentax users hate photoshop
in the moment you click the shutter, having the image recorded on a digital sensor, that is already digital art. (the various parameters and settings of the camera already influence the photographic outcome) I have already explained why on pentaxuser you see less photoshop in my previous posts -...
Posted by nathanever82 on 15/01/2010 - 15:42
Pentax users hate photoshop
Well, I finally got the answer to several of my questions in one hit. I tried Iceblinker's suggestion: Try creating and posting two versions of the same image to this forum: one created with a ppi number of 1 and another with 1000, both resampled to 800x600 pixels. They will appear exactly the sam...
Posted by DoctorJeff on 24/01/2010 - 15:34
Pentax users hate photoshop
I'm afraid we have to disagree on this, Steven. In film days, yes. But digital photography is different, especially on sharpness. The sensor introduces a small amount of fuzziness which, according to most experts, needs a sharpening. And I would rather have full control of this process than havin...
Posted by terje-l on 10/02/2010 - 17:16
optimal iso settings
I think you're talking about base ISO. The base ISO is the ISO on which the sensor is build around, so they perform the best on that range, dynamic range, noise, etc. With the K10D/GX10 the base ISO is 100 just like many earlier camera's. Now they have placed the base ISO at 200 for most sensor...
Posted by Anvh on 17/01/2010 - 13:01
optimal iso settings
I have seen a bit about this too. Up until now I had always shot at ISO 100 as far as possible, assuming that this would give the best quality pictures. It seems that may not be the case. There seem to be two explanations, both of make some sense. 1/. The analogue part of the sensor will have ...
Posted by Oggy on 17/01/2010 - 14:46
optimal iso settings
Hi and thanks for all your replies! This is the link which made me ask the question:http://www.digicaminfo.btinternet.co.uk/isosettings.htm I think you're talking about base ISO. The base ISO is the ISO on which the sensor is build around, so they perform the best on that range, dynamic range, ...
Posted by sarahmarie23 on 18/01/2010 - 09:07
Preparing for Haiti Departure
Hope things get sorted for your trip soon. If you have a laptop with you when you go - or someone does - backup everything to that every day. Take cleaning materials - rocket blower / lens pen etc as things are likely to be dusty and dirty. not to sure about Haiti but doubt that it is too different ...
Posted by promhandicam on 21/01/2010 - 15:18
Help needed
Ehhhhhh......OK. Firstly: To freeze fast moving subjects like running water, flying birds, cars etc....You must use a fast shutter speed. This usually means that the aperture is wide open or near wide open. To use your example of running water. Imagine the bottom of a bucket is your sensor. An...
Posted by Malo1961 on 20/01/2010 - 15:52
Full Frame Pentax!!!!!!!
Nah, not again? Regards
Posted by K10D on 23/01/2010 - 16:39
Full Frame Pentax!!!!!!!
The quality of existing Pentax DSLRs is so good (I've made many c. A3 prints and a few c. A2 prints with my humble 6mp K100D) I can't understand the obsession some folk have with full-frame. I suppose it's just because it was what we all used to use (sorry you folks who are still using film) and eve...
Posted by bwlchmawr on 23/01/2010 - 19:36
Full Frame Pentax!!!!!!!
does anyone have any more information regarding this. No-one outside of Pentax has any info, and no-one inside Pentax is saying anything. So whatever you read was purely speculation. Personally, I would find FF interesting, except I wouldn't be keen on having to use a 450mm lens instead of a 300m...
Posted by K10D on 23/01/2010 - 19:47
Full Frame Pentax!!!!!!!
I presume (but really have no idea) that it all depends on the MP of the sensor involved when looking at effective lens length on a FF camera. If you take something like the D700 that has 12MP and put it against a 12MP 1.5x crop camera then yes the FF would come up short but if you had a 18MP FF the...
Posted by Mike-P on 23/01/2010 - 20:01
Full Frame Pentax!!!!!!!
Way out i think. The focal length of lenses does not change, only the amount of the image circle that the sensor sees. For the same pixel pitch a FF frame sensor would have to have a higher pixel count than an APS-C one, simply because there's more of it. Or the pixel count could be the same and ...
Posted by johnriley on 23/01/2010 - 20:07
Full Frame Pentax!!!!!!!
I presume (but really have no idea) that it all depends on the MP of the sensor involved when looking at effective lens length on a FF camera. If you take something like the D700 that has 12MP and put it against a 12MP 1.5x crop camera then yes the FF would come up short but if you had a 18MP FF the...
Posted by iceblinker on 23/01/2010 - 20:12
Full Frame Pentax!!!!!!!
Focal length does not change. Yes I know, but the field of view is different when it's focussed on a different sensor format. If larger sensors are not an advantage I would ask why are Pentax launching a medium format digital? Larger sensors clearly have an advantage when used with longer focal l...
Posted by iceblinker on 23/01/2010 - 20:22
Full Frame Pentax!!!!!!!
I'm just thinking that as the sensor is larger to start with, if you have a 18PM FF camera then with the extra megapixels you can crop it to give the same effective length as a 1.5 crop 12MP APS-C at its largest. Therefore if Pentax made a 25MP FF camera we could use a 300mm lens at the effectiv...
Posted by Mike-P on 23/01/2010 - 20:23
