Search results for 'uv filter' - page 181
Flash Sync Speed
Matt, I got you on the ND filter on the lens - I was suggesting putting one on the flash sensor aswell so I could continue to use the auto mode (Photo sensor on the flash unit) on my 240 flash unit otherwise it would be underpowered for that aperture. BTW - Love the pictures on your site....
Posted by rtunstal on 17/09/2007 - 11:08
Photographing magazines
2) Getting the camera absolutely level, if I don't then I need to post process to make the image 'square' (ie solve 'perspective' issues) 3) The pages bend near the spine and so the text is not straight, is there any software that can compensate for this? Your lighting issue seems to have been tac...
Posted by distudio on 24/09/2007 - 13:29
colour depth: 3x 22 bits / 3 x 12 bits
But if you check the Exif info for the K10D you'll find its 16bit :!: The value reported depends on the application reading the EXIF data I guess: Extract of a K10D Photo interrogated via PhotoME: [Image] Image width: 3936 px Image height: 2624 px Number of bits per component: 12 Compressi...
Posted by distudio on 24/09/2007 - 09:54
Too shake or not - that is the question
Just a thought for the techies.. :) Does the sensor shake do it's stuff before a charge is put through the sensor. ie. switching it on. Being a CCD, the biggest problem with dust is that it sticks to the sensor because of the static induced by it when there's power going to it. The "cha...
Posted by distudio on 27/10/2007 - 08:45
NEW K10D w/ Firmware 1.00
took delivery of a K10D for work the other day, fresh from SRS, v1.0 firmware. I'm guessing the distribution channels are mixed up and it's taking time for the v1.3 equipped bodies to filter through. Doesn't seem unlikely given the mad scramble for Pentax gear there has been since the K10D came ...
Posted by Mongoose on 05/12/2007 - 19:26
Pentax or Sima Zooms
If you go with the Pentax 50-200mm you will have a super quality lens at an incredibly low price. See the AP test when the magazine is out on Tuesday. Your two lenses would then also have the same filter size (52mm), the same handling characteristics and the same colour balance. There's a lot ...
Posted by johnriley on 26/10/2007 - 16:55
K10D Noise Reduction
Thank you for your response. Have you reached any conclusion as to the effectiveness of this setting? Some early posts to dpreviews seemed to be contrary to my understanding of the process. Hi Ron, The effectiveness of the in camera NR really depends upon several factors. Firstly if you are shoot...
Posted by distudio on 31/10/2007 - 12:08
White Balance settings
As a side note, just a thought regarding what white balance achieves. It gives us a neutral, accurate colour balance where grey is grey and white is white. However, we might not always want that. How about glowing skin tones (81A filter on film) or the gorgeous reds of a fine sunset...AWB would t...
Posted by johnriley on 11/11/2007 - 11:13
Taking pictures in Botanical green houses
Most botanical house have a graduation from temperate to hot and dry to hot and humid. I try to go through in that order so the camera gets a chance to warm up before being exposed to humidity, which helps to reduce the problem of condensation forming on the camera. Also I don't use a UV filter as...
Posted by Ammonyte on 13/11/2007 - 22:05
Taking pictures in Botanical green houses
Most botanical house have a graduation from temperate to hot and dry to hot and humid. I try to go through in that order so the camera gets a chance to warm up before being exposed to humidity, which helps to reduce the problem of condensation forming on the camera. Also I don't use a UV filter as...
Posted by gartmore on 13/11/2007 - 22:40
Taking pictures in Botanical green houses
I would normally expect this the other way round. ie going from warm perhaps humid to cold. The filter is up against the cold air hence the condensation. Coming in from the cold the condesation will usually be on the outside. Kim
Posted by Kim C on 13/11/2007 - 23:16
Taking pictures in Botanical green houses
I guess that the gap between the lens and the filter is sufficiently leaky to let warm wet air in whilst the thing is still cold enough to cause condensation to form. (Cold air will be drier and less dense, warm humid air may be able to exploit a pressure gradient) The individual lens elements and...
Posted by Ammonyte on 13/11/2007 - 23:41
Orion Trekker II - good choice for a day hike with the K10D
I have the Tamrac Adventure 6. It's a bit bigger than the Lowepro (or at least looks like that ;)), you can attach a tripod (straps are sold separately). And Tamrac is significantly cheaper - even with additional cost for tripod straps and filter case. Takes the jacket/fleece, small umbrella, t...
Posted by ixian on 23/11/2007 - 10:44
K10D Upgrade of kit lense
Some people don't like the Sigma, but the one I have is very sharp and CA is not as bad as some would have you believe. I have read that some find it too sharp for portraits, but they can be softened in PS etc. or use a soft filter like the photographers of old. I very nearly bought the 16-45 Pentax...
Posted by Hazza on 27/11/2007 - 19:04
stocking fillers
if you haven't got a macro lens, but have got a short prime (50mm works well, as does 28), you can't go wrong with a reversing ring. Either filter thread to K mount to put that lens backwards straight on your camera, or filter thread to filter thread so you can put it on the front of a telephoto ...
Posted by Mongoose on 05/12/2007 - 21:44
Sandisc SD
The static charge will attract dust which will land on the filter that covers the sensor. The charge is not stopped by the filter. Agreed that it can't land on the CCD itself, but the effect will be the same.
Posted by johnriley on 12/12/2007 - 23:05
Sandisc SD
But the shutter will be infront of the sensor and filter. Any dust that would get attracted would be behind the shutter, and therefore would not be increased by having the lens removed. :? Dan
Posted by Daniel Bridge on 12/12/2007 - 23:42
Sandisc SD
You mention a filter in front of the sensor. What is this made from? If it is glass why is sensor cleaning viewed with trepidation by some people? I have thought about what to do if mine needs cleaning and the different methods mentioned by people has concerned me to the degree that I don't really f...
Posted by MX veteran on 13/12/2007 - 00:13
Sandisc SD
But the shutter will be infront of the sensor and filter. Any dust that would get attracted would be behind the shutter, and therefore would not be increased by having the lens removed. Yes, I thought that, but when the shutter is released the air movement chucks any debris in the mirror chamber a...
Posted by johnriley on 13/12/2007 - 00:40
K100D and InfraRed
Basically, does anyone have experience with K100D and infrared filters? Does it work, and well (without crazy exposure times)? Just want to know before I spent £30 odd on a R72 filter :)
Posted by ikillrocknroll on 15/12/2007 - 19:17
