Search results for 'uv filter' - page 325
Filter Step Rings
Step up Barrie. These arrived today . your link explains my dilemma. To me the photograph shows a step ring that will enable you to fit a 49mm filter to a 52mm lens and I would call that a step down ring.
Posted by bforbes on 05/08/2011 - 11:39
Filter Step Rings
It will always be a ring to use a larger filter on a smaller lens - the other way round would not be logical in that it would vignette. Why not avoid the issue and call them stepping rings?
Posted by johnriley on 05/08/2011 - 11:43
Filter Step Rings
Thats my point John. As far as I can see some of the Step ring being advertised are made to fit smaller filters onto larger lenses. but the descriptions vary as to what is step up or down
Posted by bforbes on 05/08/2011 - 11:52
Filter Step Rings
Since you are trying to attach a filter to a lens you'd always speak in terms of filter to lens, so in this case you're stepping up a smaller filter to a larger lens. Stepping down would be a larger diameter filter to a smaller lens. /edit imo, I think, etc..
Posted by Steep on 05/08/2011 - 12:02
Filter Step Rings
Step up Barrie. These arrived today . your link explains my dilemma. To me the photograph shows a step ring that will enable you to fit a 49mm filter to a 52mm lens and I would call that a step down ring. No Barrie, the link shows step up rings from 49mm to 77mm. This would enable you to screw a 77...
Posted by Blythman on 05/08/2011 - 12:02
Filter Step Rings
Thats my point John. As far as I can see some of the Step ring being advertised are made to fit smaller filters onto larger lenses. but the descriptions vary as to what is step up or down Yes Barrie, that is a step down. I don't know why someone would want to put a 55mm filter on a 58mm lens, but ...
Posted by Blythman on 05/08/2011 - 12:05
Filter Step Rings
Thats my point John. As far as I can see some of the Step ring being advertised are made to fit smaller filters onto larger lenses. but the descriptions vary as to what is step up or down Yes Barrie, that is a step down. I don't know why someone would want to put a 55mm filter on a 58mm lens, but ...
Posted by johnriley on 05/08/2011 - 12:14
Filter Step Rings
Yes Barrie, that is a step down. I don't know why someone would want to put a 55mm filter on a 58mm lens, but they do :? Perhaps if they only had one 58mm lens, but had a load of 55mm filters (for their other lenses). Smaller filters are also cheaper - sometimes very much so. Some of the more unusua...
Posted by petrochemist on 05/08/2011 - 12:59
24.3 MP Exmor CMOS sensor
Can I be the only one ? I want my next Pentax to have the ISO range starting at 10, never mind 510,000 I want to use my 50mm, 1.2's and 1.4's and my 85mm 1.4's 'WIDE' open without filters. John M.D. 8) I wouldn't say no to ISO10. You won't get better IQ though, just an inbuilt ND filter :
Posted by Smeggypants on 06/08/2011 - 01:56
24.3 MP Exmor CMOS sensor
Smeggypants wrote, I wouldn't say no to ISO10. You won't get better IQ though, just an inbuilt ND filter : Surely a 'gap in the market' ? I would see very low ISO numbers as a feature, could allow me to dispense with theses ND filters, hmmmm, "May have to apply for a patent" !
Posted by Galoot on 06/08/2011 - 19:12
24.3 MP Exmor CMOS sensor
Smeggypants wrote, I wouldn't say no to ISO10. You won't get better IQ though, just an inbuilt ND filter : Surely a 'gap in the market' ? I would see very low ISO numbers as a feature, could allow me to dispense with theses ND filters, hmmmm, "May have to apply for a patent" ! You can simulate ...
Posted by Anvh on 06/08/2011 - 21:08
24.3 MP Exmor CMOS sensor
Smeggypants I wouldn't say no to ISO10. You won't get better IQ though, just an inbuilt ND filter : Surely a 'gap in the market' ? I would see very low ISO numbers as a feature, could allow me to dispense with theses ND filters, hmmmm, "May have to apply for a patent" ! Stefan wrote: Yo...
Posted by Galoot on 06/08/2011 - 22:23
Pentax Sensor Patent
Ghostless technology started with the Pentax Ghostless Filter, from 1964.
Posted by johnriley on 12/08/2011 - 08:26
B+W ND 110 3.0 -10BL 1,00x
Yeah. What exactly is wrong? I notice one thing - it has way less colour cast than my Formatt filter. Different white balance settings seem to be in use, though.
Posted by Joe S on 20/08/2011 - 10:46
B+W ND 110 3.0 -10BL 1,00x
Well, blimey. I've just done it too! Thanks Stefan and Sean. I'm just wondering why the default is 200-6400, and you have to choose 100-12400? Sorry, I know this isn't anything to do with the ND filter thread. BTW, I think the photos using the filter are pretty good considering it's a firs...
Posted by darkskies on 20/08/2011 - 21:33
Filter question
Apologies for an unusual and perhaps nerdy sounding question, but I was wondering if anyone knows if there is a graduated filter available that will progressively remove blue, and increase contrast, towards the top of the image? Does anyone know if such a thing exists? Or any ideas how I could make ...
Posted by aliengrove on 21/08/2011 - 01:10
Filter question
The filter would end up allowing less info getting to the sensor. But your intent is to reduce only unwanted light, while having the sensor work with only those frequencies you are wishing to capture. That means you can expose specifically for that desirable part of the spectrum, without blowing t...
Posted by i-Berg on 21/08/2011 - 01:26
Filter question
Apologies for an unusual and perhaps nerdy sounding question, but I was wondering if anyone knows if there is a graduated filter available that will progressively remove blue, and increase contrast, towards the top of the image? You raise a good point :) Adobe Lightroom ( LR ) allows the variabi...
Posted by Smeggypants on 21/08/2011 - 06:57
Filter question
Graduated filters do allow for progressive reduction in part of the colour spectrum, that's how filters work. For example, a graduated warming filter will remove more blue at its densest part, this making the sky progressively warmer. There are likewise graduated colour filters for black and whit...
Posted by johnriley on 21/08/2011 - 08:26
Filter question
Thanks for the replies! I will trawl ebay as you suggest John. A shame that I missed your sale of filers on there. I only thought about using a colour grad filter the other day while messing around with colour filters in Lightroom. I have used a standard nd grad with some success but a tinted one, i...
Posted by aliengrove on 21/08/2011 - 09:23
