Search results for 'uv filter' - page 346
Infra-red filters - how to get good results?
plenty of tutorials on youtube using the R72 filter, which is the usual one to use but having used one on K7 and K5 i can say that the results were far better on the K7 . you really need to set a custom white balance to start which the tutorials will go through.
Posted by redbusa99 on 04/11/2014 - 22:18
Infra-red filters - how to get good results?
As others have said above, the R 72 will give you essentially straight b&w infrared images, of varying exposure lengths depending on the camera. The K 3 and K 5 in my experience are not that sensitive to IR, so the R72 on those cameras functions almost as a red 10 stop filter, and you'll need a tri...
Posted by thingsthatihaveseen on 05/11/2014 - 08:42
Infra-red filters - how to get good results?
As Bill has intimated above to do false colour with Digital, you need to use a converted camera. I've had a little dabble with a compact (quality not great). Not Pentax so, I'll link rather than post the images https://www.flickr.com/groups/infrared/pool/54050400@N05/ A general purpose IR f...
Posted by Blythman on 05/11/2014 - 20:41
Infra-red filters - how to get good results?
if you search youtube you can find out how to false colour using an r72 filter, just search and you will find all the information you need on there, i did and was able to false colour with K7 and an R72 filter, that was about 3 years ago and has long since been deleted unfortunately as when i tried...
Posted by redbusa99 on 05/11/2014 - 23:22
Infra-red filters - how to get good results?
just found this from earlier this year ,K5 and R72 filter with FA50 f1.7 lens using custom white balance, channel swapping and hue/saturation in photpshop
Posted by redbusa99 on 06/11/2014 - 08:49
Pentax Camera Image Controls vs Computer Editing
Hi petro, good to have you joining in :) The division I'm defining here between 'input' and 'output' is really based on whether the particular control or function is a 'physical' or optical function (like aperture, time value, focus) or a quality 'burned' in to the sensor data (like ISO) ... these ...
Posted by McGregNi on 11/12/2014 - 21:50
Pentax Camera Image Controls vs Computer Editing
I'm looking at ISO as being a setting that 'burns in' certain IQ characteristics at point of capture - noise levels being the most obvious, but there are tonal and colour changes at higher ISO's also. I see it as in the same category as aperture, time value, focus and flash lighting because it has n...
Posted by McGregNi on 12/12/2014 - 00:29
Pentax Camera Image Controls vs Computer Editing
:D Well I did say this sort of thread can go any which way! All interesting stuff chaps ... I did think you were asking for it John, in telling Andrew that HDR was good for churches ! :mrgreen: In fairness, I'm hardly the most committed HDR evangelist ... I too have not fired up Photomatix latel...
Posted by McGregNi on 12/12/2014 - 13:47
To the stars
A head torch is an excellent addition, try to find one which has a red filter option as well, so you don't ruin your night vision. I use my little Pentax remote and the 2sec timer. I also used live view, about the only time I have,incidentally. The Samyang suffers from coma, but it is a good beg...
Posted by Gwyn on 22/01/2015 - 14:20
A question for the landscape photographers or anyone using Flters
Soft ND grads for FF, so not you since your here! Hard grads do not cause as noticeable line on APSC as they do on FF So you will find a lot of people will tell you that you can get away with them, I chickened out and bought soft ones anyway! If you do intend to use them on the wide lens buy 100...
Posted by jules on 30/01/2015 - 15:50
A question for the landscape photographers or anyone using Flters
I never take the camera out without the Lee soft ND grad set + a CPL . Before that - I never went out without my hi-techs and before that - Cokin P. As Jules says - use them when they are needed - not all of the time - although I have to say that I rarely take the CPL off the 10-20 I managed land...
Posted by fritzthedog on 30/01/2015 - 18:31
A question for the landscape photographers or anyone using Flters
I have never found colour cast issues with the Cokin P system, so I'd be happy to recommend it for a good value ND grad and CP solution. Not sure if you'll get big enough for the ultra-wide with Cokin though .... In my most recent landscape experience with the 14mm Samyang (which can't take filte...
Posted by McGregNi on 31/01/2015 - 13:04
A question for the landscape photographers or anyone using Flters
Hi Stuart I've not been on here much lately due to ongoing house renovations, so apologies for the late entry to this thread. I use Hitech 85mm soft ND Grads, 0.3, 0.6 and 0.9. Of the three strengths the 0.6 is the most useful, but I do use all three and occasionally stack them, but not often. ...
Posted by davidstorm on 31/01/2015 - 23:37
A question for the landscape photographers or anyone using Flters
I have never found colour cast issues with the Cokin P system, so I'd be happy to recommend it for a good value ND grad and CP solution. Not sure if you'll get big enough for the ultra-wide with Cokin though .... In my most recent landscape experience with the 14mm Samyang (which can't take filte...
Posted by jules on 01/02/2015 - 08:13
A question for the landscape photographers or anyone using Flters
In my most recent landscape experience with the 14mm Samyang (which can't take filters) I have found I manage fine with a software polariser effect (Sagelight 4.0) and shooting exposures for sky and ground to be blended in Photoshop. But I accept for longer focal lengths that glass filters would off...
Posted by mikeyscope on 16/02/2015 - 12:19
A question for the landscape photographers or anyone using Flters
Wow, that is one serious looking piece of plastic! Certainly by dint of the sheer size of it , it will cover the massive area needed for the huge front element .... Thanks very much for finding this, it's really interesting and I'll certainly look into the filter options available.
Posted by McGregNi on 16/02/2015 - 12:36
A question for the landscape photographers or anyone using Flters
Cokin sell a filter holder for ultra-wide lenses, I've used mine on the Sigma 10-20mm with no problems.
Posted by aliengrove on 16/02/2015 - 13:24
A question for the landscape photographers or anyone using Flters
MikeWow, that is one serious looking piece of plastic! Certainly by dint of the sheer size of it , it will cover the massive area needed for the huge front element .... Thanks very much for finding this, it's really interesting and I'll certainly look into the filter options available. Perhaps they'...
Posted by mikeyscope on 16/02/2015 - 13:39
A question for the landscape photographers or anyone using Flters
Cokin sell a filter holder for ultra-wide lenses, I've used mine on the Sigma 10-20mm with no problems. Jon, the issue with the Samyang 14mm is twofold ... The protruding bulbous front element plus the very wide fixed petal hood . It seems that the holder linked to is specifically designed to...
Posted by McGregNi on 16/02/2015 - 14:08
What software?
I use DXO a lot (v10) but it is missing a few features that Lightroom has; the one I wold like to see most of all is the grad filters. I would also like to be able to import files into DXO from LR with some adjustments, but it just imports the out-of-camera RAW file. For noise reduction, it works v...
Posted by StephenHampshire on 28/02/2015 - 10:16
