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Photography F.A.Q (Last Updated: 2024 Nov 01 10:53 pm)
Attached Link: Okaeri Nasai
An image where I posted an abbreviated tutorial on how to postwork an image taken using an unmodded camera and IR filter. 99% of IR photos benefit great from postwork, even if you just click on the "Auto Levels" adjustment. How much and what it is depends on the camera and filter you are using. With an R72 filter, some visible light reaches the sensor and depending on your color balance, you can acheive a pleasing false color scheme with that. With the stronger filters, the images are more monochromatic and willl need to you "hand color" the scene if you want to show different colors in the image.Kort Kramer - Kramer Kreations
This sound a good idea. I am not sure how I feel about IR. At first I hated it but now some I quite like, but I would like to see more posting first before I splash out. I am still getting to grips with my nikon and that is taking most of my time. I will hover on the fence, if you like and see how things go.
HI All
right here's my take on IR with a Canon 350D and a Cokin P Series IR filter.
If I have posted this in other threads please bear with me.
NEVER use the AWB feature on the camera when taking IR - it defeats the whole object
take a picture of grass sunlight, then set the WB to this picture
Mount the filter, set the film speed to between 100 and 800, any higher and you will get lots and I mean lots of noise
Also get a Pure red filter I use Cokin P Series, will dig the details out for those that are interested.
Mount the Red filter 1st, then the IR, mount the camera on the tripod and then, set for long exposures, anywhere between 1 and 15 secs (any more than this will cause lots of noise)
change the parameters to B&W with no toning and no filter effects
will post a more complete guide to using a 350D with IR as soon as I get the chance
John
That works for me Pat...just glad to have you here. And thanks John, you input here is greatly valued. A couple of previous IR threads: ~ Infrared Question !! ~ Great IR photographer(s)
Kort Kramer - Kramer Kreations
first of all thanks to kort to advise me about this tread...
than excuse me for my english mistakes :(
my experience has start with an hoya r72... probably the well know infrared filter... it works at 720 nm... than i've tried a very cheap filter (10 dollars at ebay) that works at 900nm... the difference is really strong....
in the first case we may able to to capture part of visible light and the infrared light...
in the second case just infrared ... the result are strong contrast between the dark parts (for examples skies) and glowin' parts (foliage)... but due to the extremely long exposure (30" seconds... i've not yet a modified cam... hope it will come when the canon 40d will released)
and the monochrome result my choice was the hoya r72... i like false colours infrared a lot....
in this case the first rule is (as john said) to forgot auto white balance!
the best result is setting the white balance manually... if you've the possibility to save your photography in raw this process may be very fast!
in the past some people has ask me a lot about infrared... so i've written a first-steps tutorial on my site
you may see the difference of white balance choices!
the rest depends by your fantasy!
hope it helps!
mayda
this site is also a good gallery to surf....
here are shown the results of a lot of postprocessing tecnique!
I've never tried it myself... but I do enjoy these types of images.
Thanx for the thread, Kortaloo. I'll make sure to keep an eye on it. And who knows, maybe I'll give it a go. I've got an old Dimage 7 lying around...
( and psst..in the meantime...can't I fake it with PS? ;^P )
Marlene <")
Marlene S. Piskin Photography
My Blog
"A new study shows that licking the sweat off a frog can cure
depression. The down side is, the minute you stop licking, the frog
gets depressed again." - Jay Leno
Kort Kramer - Kramer Kreations
hi Marlene!
i've an old dimage 7 as you ;)
it's really a good choice for infrared! so sensitive that you may use whithout tripod!
my paris infrared photography was done with it!
unfortunately a pc may not reproduce as well the infrared effect
Kort Kramer - Kramer Kreations
Ooh ! I gained an accent mark! Yay for mé! LOL. ;^P
And May I loooooooooooooooooooove your IR shots! You took those with that cam? Wow. That's good news for me then.
So what do I do next? I have to mail it somewhere? Hmmm I suppose I could bring it to B&H...
And lol ...PS certainly doesn't look nearly as good. Oh well. :^ )
Marlene <")
Marlene S. Piskin Photography
My Blog
"A new study shows that licking the sweat off a frog can cure
depression. The down side is, the minute you stop licking, the frog
gets depressed again." - Jay Leno
Nope just purchase a Hoya R72 filter (eBay has'em cheap) that fits your lens thread and start clicking!
Kort Kramer - Kramer Kreations
Even better! I hate driving in the city...
( Actually , I hate driving in Delray even more... all those whiteheads in their cataract sunglasses, lol...but I digress. ;^P )
Marlene <")
Marlene S. Piskin Photography
My Blog
"A new study shows that licking the sweat off a frog can cure
depression. The down side is, the minute you stop licking, the frog
gets depressed again." - Jay Leno
White heads -- you should seen them in IR! ;'P Actually, it is not so bad now, the snowbirds have headed back north.
Kort Kramer - Kramer Kreations
LOL! Lucky me! :woot:
"My parents didn't want to move to Florida, but they turned sixty and that's the law. "
Jerry Seinfeld
Oops. See? You invite me to a thread and right away it goes OT...Sorry. My bad... :tongue2:
Marlene <")
Marlene S. Piskin Photography
My Blog
"A new study shows that licking the sweat off a frog can cure
depression. The down side is, the minute you stop licking, the frog
gets depressed again." - Jay Leno
Toodle-oo Kortaloo! :m_wave:
Marlene <")
Marlene S. Piskin Photography
My Blog
"A new study shows that licking the sweat off a frog can cure
depression. The down side is, the minute you stop licking, the frog
gets depressed again." - Jay Leno
Just a li'l tip....most digicams have custom setttings that can be stored and then readily accessible to use as needed. My canon G6 has 2 that I use exclusively for IR.
One is set for b&w at 5 sec exp and the other is for color 15 sec exp. I can then quickly switch between the two (along with the custom white balance).
hi All (again)
the tips I post usually works for me, but thats not to say they wont work for you, one other thing which I have found is a remote switch, which will save your tons of time.
the reason I use a red filter is too cut out a lot more of the IR spectrum, to give me a compressed tones image, which I then usually post edit in PS CS2.
Now when you take an IR picture, what you are actually seeing is the reflected IR light from the object you are taking. So two other points.
The foucs point will change, so watch out and NEVER AUTO FOCUS, alwys focus first then, place the filter in.
higher ISO's will alwys lead to more noise (grain for film fans). I have tried this will HIE IR FILM (kodak) and anything over 6 seconds will lead to reciprocity failure.
if anyone has a IR capable camera to donate, dont forget me
john
can your camera take color IR? I took some in the early 1970's and I lost them. I bought two b/w IR film and just used one roll cost $18 each the color slide film will cost me $32. I did find some on the net for $22 but they wanted $8 shipping so what the diff?
Oh is the filter 72 is it a red filter. I think I have it already for I put it on my film camera for the B/W shots. I am a color man I try the B/W but I alway wish for color. I would love to see what the bees sees on the flowers. Flowers have a IR to them and the bees sees this like a lighthouse. Saw that on one of those science channel.
I saw too this man in France was looking over the Roman battle where Cearer defected a army six times his side and the scincetist took IR photos of the area from a plane. It been around 2000 years that battle was and the land was farmed and all but the IR light capture the outlines of where the Romans had they armys. The scincetis then got a better ideal of the battle. I was happy to see what IR cameras can do
Oh with the 72 filter you set the camera in B/W mode?
what you see is not what you know; it in your face
Hi Y'all.
Thanks kort for starting this thread.
I am super passionate (ok maybe = obsessive) about IR Photography (some of you may know this and laugh!!)LOL.
I have written an article that may be useful to post in the techniques section on rendo (but im not sure how to do this??). Its a "word" based article so id be happy to email it to anyone who sends me a message request.
I know that a lot of the canon 300d, 350d & 400d cams have difficulty with focus and you have to experiment at the infinity end of the focus to get it right. The more portable compact digis (with "live" view screens work well) and movies in infra red look great too!!
I got my old canon 300d internally converted with an R72 filter plate and its just awsome and allows some blue light in. If you use an 87c filter plate then you get the pure black and white images. I prefer the slight colour tints of the R72.
I agree that the custom white balance is the way to go ( i photograph a bitumen road to set my white balance by) but its fun experimenting with flouro and tungsten white balance settings as some of the camners produce quite striking colour casts of purple, red and blue!!
Bye for now
and cheers
Louise
Many thanks to Joe, John, Jocko and Louis for visiting and contributing to this thread. I look forward to seeing more interesting content added in the days to come. As a side note, John mentioned focusing and then putting the filter on. With the point and shoots, I've found that the autofocus work pretty well for me in most cases. Louise, I am not sure how to get that aritcle, I think we need to approach Danny or Bruce. You could also host it on a website if you have one and then link to it that way.
Kort Kramer - Kramer Kreations
Kort this is a great tread, (thanks for a note)! ! Open a door to other photographers to experience something different.
I discovered this wonder through May's wonderfull IR shots when I started to upload here on rendo. I could not get enough of this magical colored pictures. I settled a bit since, now I do my own wonder with my camera and Hoya 72 r filter. I started to experiment with my Fuji s7000. Honestly that camera not much good for IR shots. I use now my Canon 400d , totaly different effect between a two camera. I have a slight problem thou, with my canon I always have a hot spot. My photoshop talent not a gretaest so I have great difficoulty to corect this problem on a picture. That is why I have not upload IR shots here. They not worthy in quality but this is doesn't stop me not to take shots anyway. I love your IR clouds Kort. Soon as I have a little more time I will find out if I can convert my first digi camera, Fuji 620, so I might be able to shot in truly IR. If not, I will chase up a good second hand canon for this reason only!
Untill then admire yours and and Lou's and a false color IR from May!
seeyus Tunde
here's a list of hot spot lens problem...
for me was a very hard battle in the past...
btw it seems that a modded camera will not suffer this!
@ babuci.... the canon 18-55 works without hotspot just at 35mm :)
than...
canon 100mm macro and the canon 70-300is works perfectly
compact cam:
olypmus c740 produce a light hotspot
canon powershot a620 is extremely good (for false colous too)
dimage 7 produce a light hotspot
i know that at dpreview.com there was a very long tread about this... but today i cannot log :(
i'll come back later with the link
any other experience will be greatly appreciate, thanks to all!
Thanks May! Today I went for some IR shot excursion....I got a fewer again since this tread...LOL Strangly some shot has a hot spot some not. I just checked my exif data and yes on 35mm shots doesn't have a hot spot. I will check those compact camies out, I might can get one for a good price and go tothe workshop for convert.
seeya Tunde
Hi Tunde,
theres an Aussie guy who does the conversions in Melbourne and has a good list of cameras that he can convert, prices are listed too!!
Hes at
www.burren.cx/photo
Its a very safe site, hes a member of my camera club and a professional photographer too!!
Its where i got mine done.
cheers
Louise
Hi All
heres my small list of hotspot lenses
Ef 10-22
Ef 35-70
ef 28-200 (sigma)
ef 70-300 (sigma)
ef 300 + (anything above the focal length of 300)
ef 18-55
ef 28-105
ef 28-80
ef 50 mm (sigma - macro) + bellows
the amount of hotspotting is variable but one way of making sure it does not happen is to place black card above the filter to stop the stray light from behind hittin the filter.
More research to be done.
john
I'm glad to see that this thread has been getting a workout over the weekend. Good info and links everyone, thanks for participating. Hot spots can be an annoying problem. John's suggestion is good, but also experiment with the f/stop you are using. I can't recall at the moment, but either stopping down or up should minimize the hotspot. I THINK the wider the aperture, the less pronounced it is, but don't quote me on that. I have also hear that certain filters are more prone to it as well, specifically the R72s. The filters that block out more even more light are less prone to the hotspot effect. It is a little difficult to describe, but I minimize the hot spot I get using my C8080 and R72 filter by using the circular selection tool to select most of the photo, then feather 250 pixels and bring up either the darks or lights using levels to compensate. Then I select a smaller central circle and do the same thing until the image has evened out a bit.
Kort Kramer - Kramer Kreations
HI All
again about hotpsots, they wil occur on the lenses which are older and have no multicoating, prime lenses are the worst (apparently).
Anyway a couple of other tips, if you want pure B&W IR, switch the camera to B&W then place a red filter behind the IR filter, this will increase the exposure times, but should shorten the wavelength you can get, upto 800nm +. Although this is not accurate it works for me on CANON stuff, I dont know about other camera's.
You can get a Pseudo effect by leaving the camera to b&W and using a red filter, but this will push the wavelength a little lower, some of you may like the effect, but hey its upto personal choice.
I am currently working an a long article to try and get to the bottom of IR work (including PS processing) and when it is finished I will post here or you can mail me for it, when its done.
One other thing, which is worth noting is that never shot directly into sunlight even with an IR filter on,
John
Kort Kramer - Kramer Kreations
Kort Kramer - Kramer Kreations
I may not know about the hot spots but it look to me you can put the image into phot shop and make a layer on top of the orginal image and on the top layer you can adjust the contract or levels to get very closet to the bottom layer. Then get the transparit brush and put it at 100 and as you work your way in set it at diff levels of tranparit like 50% or 30% and so om intill you get what you wish for ; no hot spot. maybe the hard way I guess.
what you see is not what you know; it in your face
Kort Kramer - Kramer Kreations
Thanks Kort for starting this. You're absolutly right about this type of photography being addictive. My first experience was when I saw a photo that my uncle had taken in color ir. Many years later I picked up a Hoya R72 for my Nikon Coolpix 8800, I had a blast playing with that one, but I was jealous of anyone with a modded camera that didn't have to deal with the long exposures. This is when I decided to modify my first camera a Sony DSC-P200 I ended up doing three of these and I still keep one in my glove box today. I also modified a Canon Powershot A620 which I still take out on occasion this was my last effort and produces great images. I plan on getting out more this summer whith my latest, a modified Canon Rebel XTI, do to some health problems I have gotten to take more than some test shots with this one. I had Lifepixel do this one for me and I couldn't be more happy with their service or the conversion that they did for me. I look forward to seeing some more images from everyone here at Renderosity and I'd like to thank averyone that has left such wonderful comments in my gallery.
Thanks again and I hope to have some new images posted from my newest camera soon
Jimº°°º¤ø,¸¸,ø¤º°
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Kort Kramer - Kramer Kreations
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Kort Kramer - Kramer Kreations