Search results for 'uv filter' - page 76
Filters
Rob, I used to use the Hoya Pro-1 filters for "protection". (Emphasis on "used") What I found is that a small impact (even in a case, falling a few inches) could be enough to smash the filter... and the filter splinters into razor sharp shards. :shock: Now that I have 100%...
Posted by MattMatic on 17/12/2007 - 17:17
Filters
Aren't they a bit like insurance,you hope younever have to claim, and you don't like paying for it , but you sure are grateful when something does go wrong. I must say I have only damaged one filter in 30 years, but my luck says as soon as I take them off I'll scratch a lens! So you see I've got my ...
Posted by pschlute on 17/12/2007 - 17:46
Filters
Has anyone here had any actual evidence that with a decent, say, UV filter, the image really is degraded in any noticeable way, compared with no filter? Other than maybe a bit of vignetting, perhaps, at very wide angles. Or is it just a theoretical thing?
Posted by ChrisA on 17/12/2007 - 18:13
Filters
In the long distant past the point has been demonstrated, and Pentax even introduced the "ghostless" filter (curved to match the front element curvature of the 55mm lens). The idea never caught on. The biggest factor I can see is the addition of two extra lens surfaces to reflect light ...
Posted by johnriley on 17/12/2007 - 18:30
Filters
The two common filters that can't be replaced by software are the polariser and the UV/skylight filters. (I'm talking about colour, not monochrome.) These provide the sensor with more information, whilst other filters tend simply to change the colour balance or add those "special effects&qu...
Posted by George Lazarette on 21/12/2007 - 11:44
Filters
If you intend doing any Landscape Photography then a polariser is essential, mine is pretty much permanently fixed to my lens. ND grads are also very useful in "contrasty" lighting to balance foreground/subject. I think these 2 are the only filters that can't fully be replicated in...
Posted by Nimitz on 21/12/2007 - 11:49
Filters
Yes I intend to use it for landscape. Which lens are you using and could you post a link for the Polariser you are using . I read on Cokin's homepage that the normal filter holder only allow down to 20mm focal length. I have seen they have a slimmer holder (1 filter only) for wide angle. Is ...
Posted by simonkit on 21/12/2007 - 11:59
Filters
One thing to remember is that the Pentax sensors are significantly smaller than the 35mm frame. When Cokin says that 20mm is the widest lens you can use, they are (probably) talking about film. You should be able to use a wider lens on digital without vignetting. I use a 49mm step-down ring on ...
Posted by George Lazarette on 21/12/2007 - 12:01
Filters
Utilising software to replicate an ND grad filter is useful but has limitations. If the scene you're shooting is high contrast then there is a good chance part of the detail will be beyond the Dynamic Range of the camera & that detail is lost. Using an ND grad in these situations ensures th...
Posted by simonkit on 21/12/2007 - 12:23
Filters
If the scene you're shooting is high contrast then there is a good chance part of the detail will be beyond the Dynamic Range of the camera & that detail is lost. Using an ND grad in these situations ensures that ALL the detail in the scene is captured. Also even when shooting Raw, recoverin...
Posted by Daniel Bridge on 21/12/2007 - 12:55
Filters
Which is why I said you may well need to take two photos at different exposures. This can often be quicker than getting the correct filter on the lens, getting the position of the filter just right etc. Might be the difference bewteen a shot got and a shot missed. Apologies, missed the bit abo...
Posted by simonkit on 21/12/2007 - 13:04
Filters
One thing to remember is that the Pentax sensors are significantly smaller than the 35mm frame. When Cokin says that 20mm is the widest lens you can use, they are (probably) talking about film. You should be able to use a wider lens on digital without vignetting. I use a 49mm step-down ring on ...
Posted by Nimitz on 21/12/2007 - 13:20
Filters
I got a lot of information from photographic magazines such as AP and Digital Camera and some of the associated sites also have information on filters. There is only one filter that cannot be replicated on the computer and that is the polariser (you need a circular polar). I also have a graduate...
Posted by beakynet on 21/12/2007 - 14:34
Filters
...(you need a circular polar).... See the comment on page 1 from ChrisA - for C&N you might, but it looks like you don't for Pentax :P ...and a dedicated filter (I use a UV filter) on each separate lense. Again, C&N front elements may be fragile, but you'll find there are those who have ...
Posted by MattMatic on 21/12/2007 - 14:41
Filters
i wont get into the protection subject - each to his own. I use them (good quality ones only). Black & White tone modifying filters do not work on digital cameras for a number of reasons. I don't know them all but I can say that digital sensors are much more sensitive to red and green than bl...
Posted by Philip Taylor on 29/12/2007 - 12:03
Filters
IR filters are useful only if you remove the IR blocking filter from inside your camera (over the sensor) as sensors are (again) highly sensitive to red and IR. IR sensors certainly work with the *istDS.
Posted by niblue on 29/12/2007 - 12:12
Filters
I know it's an old thread but I found another filter that's difficult (if not impossible) to replicate in software. The Didyminium (AKA Redhanser, red enhanser etc.) which is a fairly neutral filter that removes specific orange wavelengths (basicly 560-610nm) It's often sold for increasing the red...
Posted by petrochemist on 01/12/2011 - 17:07
Macro Lens
I'm a bit confused about the Tamron 2:5 as the owner says it's a 52BB model with a 55mm filter thread. But from what i've found out about it the 52BB has a 49mm filter thread size and the 55BB model has the 55mm.
Posted by Ratcatcher on 28/01/2008 - 18:12
Recommend a 28-200/300 zoom for MZ5N
To give an idea of what might be a reasonable price for the Pentax 28-200 - I just sold mine (excellent condition with the original box, caps, hood and a 77mm UV filter) on Ebay and it made just under £100.
Posted by niblue on 15/01/2008 - 10:21
eBay Prices
Restoring the full KAF mount capability would be something that would persuade me to upgrade immediately. It could be a very good move for Pentax as I'm sure a lot of us would feel the same. Same here, full K mount compatibility would move the K20D right to the top of my wish list faster than any ot...
Posted by ChrisA on 21/01/2008 - 23:25
