Discussion in 'Photography discussion' started by The Snockerty Friddle, Feb 23, 2010.
A bit of a cliche perhaps but I think it's my best effort so far
How did you take this?
What was the equipment?
It was taken on a D70 with an infrared filter on the lens.
You cant see through it so you have to compose the shot first and then put on the filter and bracket LOTS. The colour varies quite a lot with the exposure and the results can be almost impossible to see well on the camera screen, I usually convert them to B&W or sepia on Photoshop.
Just to make it a bit more difficult I think the point of focus is somehow slightly different for IR so small apertures may be best. I'm just finding out by trial and error and t'internet.
Call me Mr Cliche but that really appeals to me
Many camera lenses (prob not these days) have an 'r' setting on the focus ring which is for IR photography. Just shy of the infinity mark.
Why? Let me know when you find out. For some reason I can't fathom the focus is different
Not quite right, a bit wishywashy, you will get better like this.
Not mine BTW, I wish.
Lovely gardens. Does it say where they are?
Photographer:Mark BondSubject:Sheffield Park, EnglandCategory:Landscapes Location:United Kingdom - Sussex, EnglandComments:Taken with hoya R72 infrared filter. swapped red/blue channels.
I found this but it's only confused me more....
I think the small aperture for max depth of field is probably the way to go.
Also says that the camera will filter out any IR light before it reaches the sensor... in which case, if I add a filter to keep out all but IR light, how do I get any image at all?
Not bad at all Snockerty, how long was the exposure?
I'd expect it to be fairly long as DSLRs pass very little IR on account of the IR-blocker filter. I reckon that garden shot was done with a modified camera.
I think it's because the IR blocker isn't 100% efficient. I'll see if I can lay my hands on a transmission graph.
If you were serious about this lark, you could get a cheap obsolete model off fleabay (eg Canon EOS10D) and get the filter ripped out.
PS, this was shot with a 742nm IR-pass filter and Imaging Source webcam, if that counts.
Plan already in action, hoping to upgrade to a D90 soon and get my D70 converted.
Love some of your astro photography Smoker - what telescope do you use?
Just been out to try again
I really like that photo - love the contrast and the colours
It varies, the above shot was taken with a Celestron C11 (11" Schmidt Cassegrain) though I have recently settled on a William Optics Megrez 90 refractor.
There are more fancy scopes out there, but for the money it's a real corker.
I also do a bit of work with DSLR lenses - ie Zenitar 16mm fisheye, Leitz Telyt 180mm/f3.4 apo and Takumars.
Love that - i was trying to describe it to people at work today but couldn't do it justice.
Ta , you reckon it says "growth" ?
It says Black Sabbath album cover to me mate. Still a good shot though.
Been looking into getting that IR conversion done. About £200 to have the IR filter removed and while they're on they move the sensor to allow for the different focus point, clean test and calibrate the camera too.
D90 is a higher prority for now though.
Seems more or less the going rate mate. Andy from Astronomiser.co.uk charges £150 for the filter-out mod, but that doesn't involve moving the sensor and the other stuff.
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