Search results for 'uv filter' - page 326
Filter question
Polarisation filter might do the trick since it also cuts the haze somewhat making things more vibrant with more contrast. But sadly the effect is not so even over the image...
Posted by Anvh on 21/08/2011 - 11:24
Filter question
As I said, Stefan, I can't use a polarising filter as I am shooting through laminated glass; the lamination causes coloured bands that look like oil on water. For the same reason I am not allowed to wear polarised sunglasses at work.
Posted by aliengrove on 21/08/2011 - 11:32
Filter question
Sorry to have read over that part. Haze filter is the next best thing then, they cut out some of the blue light i believe and a big chunk of the UV. But i'm not sure what the effect really is on digital... it might not be worth it. And they aren't graduated but that isn't so much a problem. ...
Posted by Anvh on 21/08/2011 - 11:49
Filter question
If you use filters on digital remember not to use AWB, otherwise whatever the filter colour is may be "corrected" by the camera. Use daylight or another setting that suits your style.
Posted by johnriley on 21/08/2011 - 12:25
Filter question
Lee Filters are well known filter manufacturers and do supply the movie industry. They have an "Ask A Question" section on their website.
Posted by grahamwalton on 21/08/2011 - 12:38
Filter question
Thanks for that tip Stefan, I will give it a try, never came across that before. John, I don't bother setting the WB at all, I leave it in auto all the time, as the colour temperature is so variable, anything from 4500 to 9500, depending on time of day, amount of haze, amount of water or sky in ...
Posted by aliengrove on 21/08/2011 - 13:12
Filter question
For contrast it's very easy to stretch the 80-160 to 0-255, it can be done with level or with the curve tool you find in many programs but you probably already knew that.
Posted by Anvh on 21/08/2011 - 13:20
Filter question
As regards WB, I would be aiming to relect the nature of the ambienmt light and would shoot JPEG with a fixed Daylight WB. If you use AWB the camera will try and correct to what it sees as a neutral grey overall, so the effect of any dramatic natural lighting and indeed of a filter will be reduce...
Posted by johnriley on 21/08/2011 - 13:35
Filter question
If AWB can correct the filter then surely the white balance can also mimic the filter so why use a filter to begin with?
Posted by Anvh on 21/08/2011 - 13:47
Filter question
Jpegs don't work well at all from high altitude, there's so little dynamic range recorded and far too much processing involved. I have tried them and they just get messed up in processing. As Stefan said, if WB can reduce the effect of a filter, can it then mimic a filter? If so, what colour temp wo...
Posted by aliengrove on 21/08/2011 - 14:11
Filter question
If i've it correct something like shade or overcast(cloudy) setting should remove the blue cast. If you shoot in RAW you can change the WB to those settings with software to see what it does.
Posted by Anvh on 21/08/2011 - 14:17
Filter question
It's not so much removing the blue cast (I can do that in PP), it's reducing the light scattering, which occurs more at the blue end of the spectrum, when I take the picture.
Posted by aliengrove on 21/08/2011 - 14:24
Filter question
That's something very different indeed. Try a Haze filter, it cuts some of the blue light, UV and UV-A, maybe that might help.
Posted by Anvh on 21/08/2011 - 14:37
Filter question
If AWB can correct the filter then surely the white balance can also mimic the filter so why use a filter to begin with? In general, we don't with digital photography, as many effects can be approximated in Photoshop. However, remember that a filter works by not just changing colour temperature, ...
Posted by johnriley on 21/08/2011 - 14:52
Filter question
I use a UV filter, but to be honest, it doesn't seem to make any difference at all. I think I will try experimenting with different WB and see if that makes any difference. I know that IR pictures have far less haze, so I will try shifting the WB to the red end of the spectrum and see if that makes ...
Posted by aliengrove on 21/08/2011 - 15:05
Filter question
the tiffen Haze 2a stops even more :wink: If you find IR okay then B/W might also be okay, then get a red filter, it won't be as powerful as an IR but atleast your shutterspeeds will be higer.
Posted by Anvh on 21/08/2011 - 15:09
Filter question
Intersting, John, so changing the WB will obviously not make any difference. I just found this chart, so I will try the Tiffen Haze-1 filters, which were also recommended by a guy who shoots from a paraglider.
Posted by aliengrove on 21/08/2011 - 15:10
Filter question
I've just ordered a couple of Haze 2A filters, so I hope they work! I had no idea that normal UV filters didn't block much UV.
Posted by aliengrove on 21/08/2011 - 15:25
Filter question
UV filters do block UV but the lens coating and the filter infront of the sensor also cuts UV so in the end they hardly make a difference. But hopefully the more powerful ones do make a difference though.
Posted by Anvh on 21/08/2011 - 15:28
Filter question
I just got a reply from Lee filters offering to make me a custom filter, but only in 8 months time when they have the capacity to work on new designs! No mention of price (I imagine it would cost a fortune), I did however offer to field test one for them:wink:
Posted by aliengrove on 22/08/2011 - 13:00
