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Photo Forum / Digital Photography / ZLR Cameras / June 2006Panasonic FZ30 Infrared Performance
Hi All, I've just uploaded an article exploring the infrared photography potential of the Panasonic FZ30 <http://www.dimagemaker.com/article.php?articleID=559> It joins the list of now 16 cameras I have tested for IR performance <http://www.dimagemaker.com/specials/digitalir/digitalir.php> Cheers, Wayne Wayne J. Cosshall Publisher, The Digital ImageMaker, http://www.dimagemaker.com/ Blog and Podcast http://www.digitalimagemakerworld.com/ Personal art site http://www.artinyourface.com/ > Hi All, > [quoted text clipped - 3 lines] > It joins the list of now 16 cameras I have tested for IR performance > <http://www.dimagemaker.com/specials/digitalir/digitalir.php> Sorry to be asking such a beginner question but what's the point of infrared photography? And also isn't the camera only working within wavelenghts we can see and not really infrared - or am I mistanken in this? Kind regards Bruno >> Hi All, >> [quoted text clipped - 13 lines] > > Bruno I am currently interested in this idea, merely to try it out. Speaking from a position of vast ignorance I understand that most/many digital cameras can process light through the standard, visual, spectrum and also are receptive to infra-red light. With an appropriate filter one can eliminate the visual spectrum and, with a longish exposure, leave only the infra red to activate the sensor. Naturally an infra red picture has a somewhat different appearance to a "normal" picture as various elements in the landscape emit or reflect infra red somewhat differently to the way they do the standard visuallight spectrum. Interestingly I have read that the FZ30 can handle this but my usually very good photo shop told me that it cannot as its maximum exposure time was too short. I think that they are wrong and will get hold of a suitable filter and try it out myself. If anyone can add to or corect this this then please do. Bill >>> Hi All, >>> [quoted text clipped - 30 lines] > > If anyone can add to or corect this this then please do. Many digital cameras have a filter that blocks infrared, whether the FZ30 does I don't know. If it does then exposure times will have to be quite long, if it doesn't then they should be in the same general range as visible light exposures. > Bill  Signature--John to email, dial "usenet" and validate (was jclarke at eye bee em dot net) > > Interestingly I have read that the FZ30 can handle this but my usually > > very good photo shop told me that it cannot as its maximum exposure time [quoted text clipped - 7 lines] > long, if it doesn't then they should be in the same general range as > visible light exposures. Not correct apparently. See http://digitalimagemakerworld.com/category/infrared/ there are a couple of images on that page taken with an FZ30. The biggest problem with IR photography is the inordinate expense of the filter. Whoops! Take that back, they're bloody expensive here in NZ but I just checked on eBay & Hoyas are around US$30. Go for it, kid! ;^) SignatureTe Crumpler >> > Interestingly I have read that the FZ30 can handle this but my usually >> > very good photo shop told me that it cannot as its maximum exposure [quoted text clipped - 10 lines] > Not correct apparently. See > http://digitalimagemakerworld.com/category/infrared/ What's not correct? That many digital cameras have an infrared blocking filter? That I don't know whether the FZ30 does? That if such a filter is present exposure times will have to be quite long? > there are a couple of images on that page taken with an FZ30. Note the exposure times for the ones for which the times are listed. > The > biggest problem with IR photography is the inordinate expense of the > filter. Whoops! Take that back, they're bloody expensive here in NZ but > I just checked on eBay & Hoyas are around US$30. > > Go for it, kid! ;^) Signature--John to email, dial "usenet" and validate (was jclarke at eye bee em dot net) >From what I've been testing, all current and recent digitals have an IR blocking filter, it just varies in strength. This was not the case if you go back a few years or more. In fact they seem to have been getting stronger over time. Certain older models are very popular with the IR community, as they either have no or only have a weak IR block filter and thus can be handheld and used for people photography, unmodified. Of course it is possible to remove the filter or have someone else do it. Cheers, Wayne Wayne J. Cosshall Publisher, The Digital ImageMaker, http://www.dimagemaker.com/ Blog and Podcast http://www.digitalimagemakerworld.com/ Assistant Director, International Digital Art Award Coordindinator of Studies, Multimedia and Photomedia, Australian Academy of Design Personal art site http://www.artinyourface.com/ > >> > Interestingly I have read that the FZ30 can handle this but my usually > >> > very good photo shop told me that it cannot as its maximum exposure [quoted text clipped - 30 lines] > to email, dial "usenet" and validate > (was jclarke at eye bee em dot net) Hi Bill, You are right. The FZ30 is certainly capable of IR photography, as the images show. Exposures in the 2 second plus range work. Cheers, Wayne Wayne J. Cosshall Publisher, The Digital ImageMaker, http://www.dimagemaker.com/ Blog and Podcast http://www.digitalimagemakerworld.com/ Assistant Director, International Digital Art Award Coordindinator of Studies, Multimedia and Photomedia, Australian Academy of Design Personal art site http://www.artinyourface.com/ > >> Hi All, > >> [quoted text clipped - 32 lines] > > Bill >And also isn't the camera only working within wavelenghts we can see and >not really infrared - or am I mistanken in this? Yes, you are. To prove it, look at the front end of your TV's remote control while holding down one of the buttons. See anything? Now try the same thing while looking at it through your camera's electronic viewfinder. > Yes, you are. To prove it, look at the front end of your TV's remote > control while holding down one of the buttons. See anything? Now try > the same thing while looking at it through your camera's electronic > viewfinder. Thank you - that was enlightening :-) I can see some very interesting uses for infrared photography being this is something now in the hands of the normal consumer. One more possible stupid question! Could one use a software filter to get out the infrared information from any image taken with a long exposure time, from say night shoots, or is the information gone from normal pictures? Kind regards Bruno You can't extract the IR info from a picture that is not taken with an IR filter, as there is no way to separate it from the generally much stronger visible light components. Cheers, Wayne Wayne J. Cosshall Publisher, The Digital ImageMaker, http://www.dimagemaker.com/ Blog and Podcast http://www.digitalimagemakerworld.com/ Assistant Director, International Digital Art Award Coordindinator of Studies, Multimedia and Photomedia, Australian Academy of Design Personal art site http://www.artinyourface.com/ > > Yes, you are. To prove it, look at the front end of your TV's remote > > control while holding down one of the buttons. See anything? Now try [quoted text clipped - 15 lines] > > Bruno Hi Bruno, Infrared photography (with amateur equipment) just gives a different look. Leaves and grass tend to white (if you convert the image to BW). It cuts through haze. Skies darken. It is just another option for photography, which some like. The sensors in digital cameras have sensitivity outside the visible range, both UV and IR. Effectively all current digitals have an IR blocking filter that reduces (but does not eliminate) the camera's sensitivity to IR. Cheers, Wayne Wayne J. Cosshall Publisher, The Digital ImageMaker, http://www.dimagemaker.com/ Blog and Podcast http://www.digitalimagemakerworld.com/ Assistant Director, International Digital Art Award Coordindinator of Studies, Multimedia and Photomedia, Australian Academy of Design Personal art site http://www.artinyourface.com/ > Sorry to be asking such a beginner question but what's the point of > infrared photography? [quoted text clipped - 5 lines] > > Bruno |
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