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Thread: "Stella" in IR, IR+Vis, & Vis

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    Default "Stella" in IR, IR+Vis, & Vis

    This is the little steamer "Stella":

    "Infra red"

    IR-converted E-1 with Schott RG780 filter

    "Infra Red & Visible"

    IR-converted E-1 with Edmund Optics' "Cold Mirror"

    and finally...

    "Visible"

    E-3

    All images taken handheld with the ZD ED 7-14. No selective alteration of the colours have been done - only the usual stuff applied to the entire images.

    Any comments, questions or suggestions are welcome - as usual.

    Cheers, Jens.
    Last edited by jebir; 05-05-2008 at 12:06 AM.
    Motto: Wildlife won't come to me unless I go to it.
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    Default Re: "Stella" in IR, IR+Vis, & Vis

    Gee, Jens, those posts of yours have got me into seriously contemplating a IR conversion of my E-500. The photos are extraordinary, and particularly that IR look.

    That "cold mirror" you mentioned- is it the name of the IR filter? How usable do you find the camera? I have heard of AF and AE problems in IR-converted cameras, do you have any? (These questions may seem a bit silly, but it's two in the morning, and I had a couple of pints some time ago, so please bear with me )

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    Default Re: "Stella" in IR, IR+Vis, & Vis

    I love the first photo there's a real sense of tension between the boat and tie off
    that seems to be more intense without the distraction of color as in the other to versions.

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    Default Re: "Stella" in IR, IR+Vis, & Vis

    Gotta love IR photography. Very very nice.

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    Default Re: "Stella" in IR, IR+Vis, & Vis

    Quote Originally Posted by Hudsonhites View Post
    I love the first photo there's a real sense of tension between the boat and tie off
    that seems to be more intense without the distraction of color as in the other to versions.
    Yes! And its not just between the boat and tie off either. In the IR version everything seems to be sucking you right into the photo. That doesn't happen with the other two. Very cool.
    Nate

    "There's only one rule in photography - never develop colour film in chicken noodle soup." - Freeman Patterson

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    Default Re: "Stella" in IR, IR+Vis, & Vis

    For me the colour version has a lovely sense of "The little boat that could. Toot! Toot!".
    But yes, the IR conversion is quite a different thing, very gripping.
    Great stuff.
    Yet another photophool called Chris...
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    Default Re: "Stella" in IR, IR+Vis, & Vis

    Thanks giorgiosmit,

    Quote Originally Posted by giorgosmit View Post
    That "cold mirror" you mentioned- is it the name of the IR filter?
    Yes, it is the kind of filter I bought, as an experiment, for that body. It lets some of the darkest blue light through together with some red and all of the IR.
    Attachment 5696

    How usable do you find the camera? I have heard of AF and AE problems in IR-converted cameras, do you have any?
    I find it very usable although that is a very subjective term but one must have in mind a few things as an IR-photographer.

    1. The ratio of IR and visible light is varying a LOT for different lighting situations. Thus, since the camera's metering system is delicately tuned to meter the various colours of visible light correctly, there is no way that you can trust it for IR. However,with an IR-body, it doesn't take long to learn the various over/under exposure compensations that are needed in different situations. Typically we are talking about a range of 2 stops from the camera's metered value, depending on lighting and subject. Shooting fully Manual exposure helps a lot to understand what's going on with the light and chimping is of course a must in the beginning.
    2. For the AF, the precision is 100% correct in my converted cameras since I'm IR-filtering also the light that is used for the AF-sensor. However, in lighting situations where there is no or very little IR present, the AF will of course struggle even if there is visible light available. Some inexperienced IR-photographers interpret it as something wrong with the AF-system but I usually take that as an indicator that the IR-light is too low and it isn't worthwhile doing any IR-photography anyway. In my converted cameras, manually focusing has to be done "old skool" woth an offset indicated by an IR-mark. It is IMO not generally possible to implement accurate manual IR-focusing for all lenses.


    Cheers, Jens.
    Motto: Wildlife won't come to me unless I go to it.
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    E-5, E-3, E-510, IR-E-1 ,E-P2
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    Default Re: "Stella" in IR, IR+Vis, & Vis

    Thanks for the comments friends!

    I'm curious about how you find the image rendered by the "Cold mirror"-filtered light?

    Cheers, Jens.
    Motto: Wildlife won't come to me unless I go to it.
    --------------------------------------------------------
    My Wildlife Photos: jensbirch.smugmug.com

    E-5, E-3, E-510, IR-E-1 ,E-P2
    ZD: 7-14, 14-54, 50, 50-200 SWD, 90-250/2.8, 300/2.8, EC-14, EC-20
    Peleng 8mm fisheye, shift Tamron SP 17/3.5, Tokina AT-X 300/2.8
    FL-50R, FL-40, FL-20, HLD-2, HLD-4, cleaved ZD EX-25 w. electric bypass, 250D, 500D, KatzEye Plus OptiBrite
    Feisol CT-3472LV and CM-1471

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    Default Re: "Stella" in IR, IR+Vis, & Vis

    The perspective from the 7-14 is amazing and all images are very strong.

    I prefer #1 then #3 and am quite ambivalent about #2. It is a very 'cold' effect (which would be the reason to use that filter) but to me it seems 'wrong' for this sunny scene.
    Bill Shinnick
    Pana GH1; 7-14; 14-140; 45; FL-36R.


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    Default Re: "Stella" in IR, IR+Vis, & Vis

    Hi Jens,

    I like the IR effects of #1 and #2. The cold mirror is quite interesting, but somehow lacks "punch" to the image. I think that is mostly due to it showing slight coloration near the greens??

    Maybe it would be interesting to blend the blue sky from #2 into the more monochrome IR of #1?

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    Default Re: "Stella" in IR, IR+Vis, & Vis

    Interesting filter. The bandpass is somewhat similar to the notorious "Congo Blue" theatre gel, though the mechanism is very different (dielectric mirror versus dye).





    I have some of the above gels sandwiched between step rings, and photos from unconverted cameras, despite picking up deeper IR as well, are quite close to what one sees by eye. In neutral WB scenes are generally blue while strong IR reflectors (like foliage) are rendered pink. White or green paint, being weak IR sources, show as light blue. Visible to the naked eye, albeit very weakly, it's debatable whether this deep red portion of the spectrum qualifies as IR, but it can certainly make for more interesting photos, especially when mixed with the blue. Next time the sun comes out here I'll make some to post.

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    Default Re: "Stella" in IR, IR+Vis, & Vis

    Jens, all three are good, your IR conversion ist nicht auf eigene gefahr !!! It is a successful one.

    I love boats

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    Default Re: "Stella" in IR, IR+Vis, & Vis

    Jens, in this case I prefer the last shot, because the subject, the boat stands out from the surroundings. Especially in the IR rendition, the abundance of white confuses the focus on the main subject, in my view.
    However, I think the IR would work very well, but in a different context.
    Cheers,
    Don

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    Thumbs up Re: "Stella" in IR, IR+Vis, & Vis

    Jens, I like the third the most, but the second has that post card feeling come visit here. Cheers Pete
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    Default Re: "Stella" in IR, IR+Vis, & Vis

    I think the color version is very nice, and I like #1 almost as well. The blue is appealing on #2, but the foreground is too light and the boat seems to get lost.


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    Default Re: "Stella" in IR, IR+Vis, & Vis

    Jens,

    In the recent past I read a post regarding a converted Olympus that allowed Blue + IR to pass. I have gone searching for that information again and have found this thread. Perhaps the cold mirror is the filter I am looking for.

    I seem to remember seeing more photos using this filter. Can you direct me to more examples of what photos taken with the Cold Mirror look like?

    Sincerely,
    Bobby

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    Default Re: "Stella" in IR, IR+Vis, & Vis

    Hi Bobby,

    see post #38 in my E-1 IR-conversion thread. Also see your PM for a bit more info.

    Cheers, Jens.
    Motto: Wildlife won't come to me unless I go to it.
    --------------------------------------------------------
    My Wildlife Photos: jensbirch.smugmug.com

    E-5, E-3, E-510, IR-E-1 ,E-P2
    ZD: 7-14, 14-54, 50, 50-200 SWD, 90-250/2.8, 300/2.8, EC-14, EC-20
    Peleng 8mm fisheye, shift Tamron SP 17/3.5, Tokina AT-X 300/2.8
    FL-50R, FL-40, FL-20, HLD-2, HLD-4, cleaved ZD EX-25 w. electric bypass, 250D, 500D, KatzEye Plus OptiBrite
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    Default Re: "Stella" in IR, IR+Vis, & Vis

    I love the first image! I think the colour image neutralises the strain on the rope, if you see what I mean. It becomes a nice colour photo, but the tension between the rope/boat and bollard is more literal in the monochrome picture.

    You got an interesting discussion going as well.


    Steve

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