Rashed Abdulla
(K=163889) - Comment Date 6/30/2006
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http://www.usefilm.com/image/1137600.html
please visit and view this image .
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Chris Hunter
(K=25634) - Comment Date 6/30/2006
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I've never seen a photoshop filter that can polarize light.
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Rashed Abdulla
(K=163889) - Comment Date 6/30/2006
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dear Chris Hunter
I've never seen a photoshop filter that can polarize light.
I never maid that statment at all . I said to that polorizinf filter the following
" I there fore keep all of the Cokin P series square filters and along with many other glass circular filters especially like the polarizing and natural density filters very close to my hand."
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Rashed Abdulla
(K=163889) - Comment Date 6/30/2006
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sorry that was to defferentiate between the circular galss filters, like the polorizers, Natural density, and the Cokin Sqaure Specail Effect Filters.
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Chris Hunter
(K=25634) - Comment Date 6/30/2006
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Rashed - I'm sorry you misunderstood my comment.
I was agreeing with you, in that there IS NO photoshop filter that can polarize light... genuine filters are far superior.
Please maintain a level head, and understand that their is a good chance that you may be misunderstanding the intention of someones comment. No hard feelings.
Regards,
Chris
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Rashed Abdulla
(K=163889) - Comment Date 6/30/2006
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I am also sorry I did not mean anything wrong here at all and I also keep no hard feeling for any one at all.
I hope one of the Moderators pass through and remove the whole lot here as the intention was to help and not to create any unacceptable feelings between friends.
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Chris Hunter
(K=25634) - Comment Date 6/30/2006
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Absolutely Rahsed, it was simply a miscommunication.
I believe we both share the same intentions with UF... to learn and help others as well. My comment was sarcastic, however not intended to be towards anyone.
Back to your forum post, there is def. no way to polarize light in photoshop after the photo has been taken. Additionally, the use of PS filters do seem to leave the impression that a color has simply been overlaid on the image.
The one aspect where I feel that PS can compte with glass filters is with the use of graduated ND filters, to darken the sky and produce even exposures durning sunset/high contrast scenes. However, that is through the use of multiple bracketed exposures taken on scene, then overlaid to produce the same effect as ND grads. I would say it is certainly more time consuming then using a ND grad on scene, however more flexible, as you can control the gradation of the darker image on top.
Regards friend,
Chris
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Rashed Abdulla
(K=163889) - Comment Date 6/30/2006
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Thank a lot for explaining this issue this deep for every one to learn from.
That’s been very nice of you my friend and wish you all of the best always.
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Chris Hunter
(K=25634) - Comment Date 6/30/2006
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Thanks Rashed, the topic of creating high dynamic range images via multiple exposures is on the list for an article. I think it may be next!
Regards,
Chris
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Rashed Abdulla
(K=163889) - Comment Date 7/1/2006
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dear friend Chris ,
you are doing a great job there and I do wish you all of the best with this article.
I will fllow up your articles and will always let you know what I plan to post prior to posting it. thats promise.
All of the best my friend
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Helen Bach
(K=2331) - Comment Date 7/1/2006
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Speaking of high dynamic range, using colour correction filters on the camera instead of doing a white balance to correct for the lighting will maintain maximum dynamic range for both digital and film (in which case you don't do a white balance, you just correct later).
On the whole I'd advise against using a neutral density grad unless you really need it - ie you are trying to record a scene that is outside the dynamic range of your film or sensor. If you are shooting film, the use of negative film will probably remove the requirement for an ND grad.
If you are using B&W film, then there is no substitute for 'contrast' filters used on the camera. You can't replicate their effect in Photoshop without a lot of work. If, on the other hand, you are shooting colour and converting to B&W, then there is an advantage in not using a contrast filter at the time of taking.
There is also no Photoshop equivalent of the most common filter: The UV, 'Skylight' or 'Haze' type of filter. If you have UV haze you cannot take it out in Photoshop. You can improve the contrast, but you cannot fully recover the lost detail that the haze obscures. This only applies to haze: Camera filters have no real effect on fog or mist.
With effect filters (which I do not use now - with rare exception) it's a judgement call. Whatever you prefer. Camera filters will give a subtly different look from their Photoshop equivalents.
Best,
Helen
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Jeroen Wenting
(K=25317) - Comment Date 7/1/2006
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I strongly believe in doing everything in the camera.
Any postprocessing I do is no more than things like some colour correction and cropping to make the image fit for display (no more than you'd do when adjusting the settings of an enlarger or chemicals on development/printing).
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Rashed Abdulla
(K=163889) - Comment Date 7/1/2006
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Sweet friend Helen, we say in Qatar ( Shokran )= Thanks ,thats of course for your regular assist in showing us whats best in this media. I like you and and the same time I respect you a lot.
Best Regards Gentle Lady .
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Rashed Abdulla
(K=163889) - Comment Date 7/5/2006
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Further to my articles about the use of different categary filters in both B/W and color photography digital or film , I have found this site which I thought might be helpful to some of the members.
This site explain a lot about the Cokin Square Filters system and i did find that the Cokin system is very simple and friendly to use and almost cover all the need.
I hoep you get even if a little interest in useful assist out of this site.
http://www.geocities.com/cokinfiltersystem/
all of the best.
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Chad Parish
(K=6440) - Comment Date 8/24/2007
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I am looking into using more filters in my work and I am curious what filters are most recommended? Cokin? They seem to have the best range available. Any other lines you think are better?
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Jeroen Wenting
(K=25317) - Comment Date 8/24/2007
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no Chad. Cokin are low quality.
They're handy if you're terribly low on money or want something noone else has but that's about it.
B+W and Hoya are the best overall together with Lee and Singh-Ray.
What filters to get depends on what you're going to be using them for.
Most useful are generally polarisers (do get circular polarisers, not linear, and that relates to the optics, not the shape).
Graduated neutral density filters can be handy for high contrast landscape scenes (I've been planning to try and get hold of some Singh-Rays for years, but the price is a little steep for the limited use I'd get out of them).
Then there's warming filters, handy when shooting in relatively harsh light.
And last but not least filters to correct for non-neutral colour light sources like incandescent and fluorescent lights while shooting indoors without flash, but those have been largely replaced by in-camera electronic compensation.
Do expect to pay a hefty price though, quality filters can easily cost you well over a hundred dollars (especially the 77mm and larger ones for big lenses).
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Chad Parish
(K=6440) - Comment Date 8/28/2007
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Good to know Jeroen, thanks for that bit of info.
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Rashed Abdulla
(K=163889) - Comment Date 8/29/2007
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There is nothing technically wrong with all of the cokin filters that are including the conversional type ones.
My brother used them for long years and I still use them.
The only problem with cokin is being made in France, where some people in the west do not like them for that reason only.
This time I paid more than 300 dollars just for 1, 82mm circular conversional polarizer and 2X ND of also 82mm, I enjoy using Cokin Filters, they are very creative and very well designed and constructed.
For some people just adding an article to thread while in real time, they do not show anything of their own work which involves such use of filters.
All of the best to every one.
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Tiger Lily
(K=10966) - Comment Date 10/5/2007
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I have the circular polarizer which I use a lot outdoors. Also a dark ND filter that I don't use much. My circular polarizer is a "Cokinlight" glass filter. I didn't know that they are considered low quality.
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Jeroen Wenting
(K=25317) - Comment Date 10/5/2007
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Cokin filters are optically inferior to those of brands like B+W and Hoya, especially their plastic ones.
That's a direct consequence of the materials used.
They're also rather fragile, being made of relatively soft material that's very easy to get scratched deeply.
For most purposes you likely will never notice the difference, but if you make enlargements to hang on the wall for example, or crop tightly and print the crop at regular size you do notice loss of sharpness (and with some of their filters you can if you have a critical eye see the discolouration imposed by their not-quite-neutral GND and other supposedly neutral coloured filters.
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Tiger Lily
(K=10966) - Comment Date 10/7/2007
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That makes sense. Thanks.
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Rashed Abdulla
(K=163889) - Comment Date 10/17/2007
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To me the cokin will always remain great, with the adopter fitted on the lens, there is more flixabilities to change filters by just pulling one and dropping another, they are also of very creative nature.
Filters do detariorates with time, nothing remains as good as when it been bought the first time, but that is very natural and happens with all type and made of filters, they are also directly exposed to the weather condition and the photographer various activities so there will be time factor for these filters to get damaged or effected with long time use, NOT JUST COKIN BUT ALL FILTERS SUBJECT TO THAT.
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Rashed Abdulla
(K=163889) - Comment Date 10/17/2007
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Oh I forgot to add here, how would a person talk about something he never used before and may be he never seen ?
I do not take the words of a person with out a good experince of the matter ?
This is not fare to take their regarding any technical matter.
I just ignore them.
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