How Do You White Balance A Converted 590nm Camera
Monochrome filters on infrared camera
I had my xt1 converted at lifepixel to 590nm infrared (super color). In add-on to shooting raw with custom white balance, I'm playing with the motion-picture show simulations. In detail in playing with monochrome and the filters. Since low-cal frequencies below 590nn are mostly blocked by the sensor filter, would it be true that the dark-green filter should darken the sky (even more) considering blueish calorie-free is blocked, block some red lite (between 590nm and, say, 720nm), and brighten leafage even more (as green light is immune through)?
Thus the event of the green filter would be something like having a 720nm conversion instead of a 590nm conversion?
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Re: Monochrome filters on infrared camera
Montanawildlives wrote:
I had my xt1 converted at lifepixel to 590nm infrared (super color). In addition to shooting raw with custom white balance, I'm playing with the film simulations. In particular in playing with monochrome and the filters. Since lite frequencies below 590nn are generally blocked by the sensor filter, would it be true that the green filter should darken the sky (even more) considering blueish light is blocked, cake some red light (between 590nm and, say, 720nm), and burnish foliage fifty-fifty more than (every bit green light is allowed through)?
Thus the upshot of the dark-green filter would exist something like having a 720nm conversion instead of a 590nm conversion?
Nobody cares? Fine, be that style.
Here are four shots (in camera jpeg settings were +2 sharpness, -1 NR, +i shadow and +i highlights). The first is monochrome, then monochrome with yellow, blood-red, and green filters (in photographic camera).
The biggest divergence seems to be the blue sky becoming darker, as I hypothesized. With the greenish filter seems pretty like to the unfiltered, with both yellow and ruby-red filters producing a lighter heaven.
Is there more than contrast in the green filter shot? (I'm looking in the tree shadows).
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Re: Monochrome filters on infrared camera
The green filtered version most seems to take the lowest dissimilarity of the agglomeration...
Why not only grab a 720 or higher filter and stack? I know that is supported/documented by various places (Kolari Vision, for instance). Yous might yield better results that way.
When I shoot full spectrum, I find unmarried-filter of the wavelengths I want works best.
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(unknown member) • Forum Pro • Posts: 12,611
Re: Monochrome filters on infrared camera
Montanawildlives wrote:
Montanawildlives wrote:
I had my xt1 converted at lifepixel to 590nm infrared (super color). In improver to shooting raw with custom white remainder, I'm playing with the film simulations. In particular in playing with monochrome and the filters. Since light frequencies beneath 590nn are mostly blocked by the sensor filter, would it exist truthful that the green filter should darken the heaven (even more than) because blue calorie-free is blocked, block some ruby-red light (between 590nm and, say, 720nm), and brighten foliage even more than (as green low-cal is immune through)?
Thus the event of the green filter would exist something like having a 720nm conversion instead of a 590nm conversion?
Nobody cares? Fine, exist that way.
Here are four shots (in photographic camera jpeg settings were +2 sharpness, -one NR, +1 shadow and +1 highlights). The first is monochrome, then monochrome with yellow, crimson, and green filters (in camera).
The biggest departure seems to be the blue sky becoming darker, every bit I hypothesized. With the green filter seems pretty like to the unfiltered, with both xanthous and red filters producing a lighter sky.
Is there more than dissimilarity in the green filter shot? (I'm looking in the tree shadows).
Your better off using bodily glass filters over the lens. As a rule foliage should be white in advent, skies dark . Your images are showing little of either . Using a color file and mail processing to black and white gives you much more than scope.
590 works best for faux colour , 720 tends to be the perfect balance between imitation color and good black and white and 850-950 brand very skillful infrared black and only images .
keep experimenting it's bang-up fun.
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Re: Monochrome filters on infrared camera
Brett E Carlock wrote:
The greenish filtered version almost seems to have the lowest contrast of the bunch...
Why not just catch a 720 or higher filter and stack? I know that is supported/documented by various places (Kolari Vision, for instance). You might yield meliorate results that style.
When I shoot full spectrum, I find single-filter of the wavelengths I desire works best.
Thanks Brett. Yeah, I do put a filter on there sometimes (720 or 760) but I was thinking I could take a short cut with the in-camera monochrome filters--seems like it won't work.
I have noticed that the filters give me more hot spots besides--a lens that might usually be skilful to f8 shows a hotspot at f4 when I put the filter on. I guess this makes sense, because a higher percentage of the calorie-free is in the infrared range after I put the filter on, making the hotspot more noticeable.
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Re: Monochrome filters on infrared photographic camera
Labe wrote:
Montanawildlives wrote:
Montanawildlives wrote:
I had my xt1 converted at lifepixel to 590nm infrared (super color). In addition to shooting raw with custom white balance, I'thou playing with the film simulations. In particular in playing with monochrome and the filters. Since light frequencies below 590nn are mostly blocked past the sensor filter, would it be true that the green filter should darken the heaven (fifty-fifty more) because blue low-cal is blocked, block some red calorie-free (betwixt 590nm and, say, 720nm), and brighten leafage even more (every bit green light is allowed through)?
Thus the issue of the greenish filter would be something like having a 720nm conversion instead of a 590nm conversion?
Nobody cares? Fine, exist that mode.
Here are iv shots (in camera jpeg settings were +2 sharpness, -ane NR, +1 shadow and +1 highlights). The first is monochrome, then monochrome with yellow, red, and green filters (in camera).
The biggest difference seems to be the blueish sky condign darker, as I hypothesized. With the green filter seems pretty like to the unfiltered, with both yellowish and cerise filters producing a lighter sky.
Is there more contrast in the green filter shot? (I'yard looking in the tree shadows).
Your improve off using bodily glass filters over the lens. As a rule foliage should exist white in appearance, skies dark . Your images are showing footling of either . Using a colour file and post processing to black and white gives you much more telescopic.
590 works all-time for false color , 720 tends to be the perfect residue between faux colour and expert black and white and 850-950 make very good infrared black and only images .
keep experimenting it's great fun.
I'm certain you lot are right virtually the filters, and I do apply them sometimes. Does anyone else have a problem with filters worsening hotspot bug?
At this bespeak I'k actually only interested in black and white. I practise accept the 950 and 850 filters and will try them today, only since the 760 filter seemed to make my hotspots substantially worse, I'm thinking that the 850 and 950 might make this unmanageable.
I'm using the two cheap XC lens (16-fifty and l-230); they are supposed to be good up to f8 usually, and with my 590 sensor filter and no additional filters, they are fine at least to f8 in my experience. It is when I add together these filters that the hot spots become pronounced, and to my rookie mind I call up this might be because the proportion of infrared calorie-free is increasing (and it is this light that is prone to hotspots).
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(unknown fellow member) • Forum Pro • Posts: 12,611
Re: Monochrome filters on infrared photographic camera
GMontanawildlives wrote:
Labe wrote:
Montanawildlives wrote:
Montanawildlives wrote:
I had my xt1 converted at lifepixel to 590nm infrared (super colour). In improver to shooting raw with custom white balance, I'm playing with the film simulations. In particular in playing with monochrome and the filters. Since light frequencies below 590nn are mostly blocked by the sensor filter, would it be truthful that the green filter should darken the sky (even more than) because bluish calorie-free is blocked, block some ruby-red light (between 590nm and, say, 720nm), and brighten foliage even more (equally greenish low-cal is allowed through)?
Thus the upshot of the greenish filter would exist something like having a 720nm conversion instead of a 590nm conversion?
Nobody cares? Fine, be that mode.
Hither are four shots (in photographic camera jpeg settings were +two sharpness, -ane NR, +1 shadow and +1 highlights). The first is monochrome, so monochrome with yellowish, red, and green filters (in camera).
The biggest difference seems to be the blue sky becoming darker, as I hypothesized. With the light-green filter seems pretty like to the unfiltered, with both xanthous and blood-red filters producing a lighter sky.
Is there more contrast in the green filter shot? (I'm looking in the tree shadows).
Your improve off using bodily glass filters over the lens. Equally a dominion leafage should be white in appearance, skies nighttime . Your images are showing little of either . Using a colour file and postal service processing to blackness and white gives you lot much more scope.
590 works best for false colour , 720 tends to be the perfect balance between faux colour and proficient black and white and 850-950 brand very good infrared black and only images .
go along experimenting information technology's great fun.
I'k certain y'all are right about the filters, and I do apply them sometimes. Does anyone else have a problem with filters worsening hotspot issues?
At this bespeak I'm really just interested in blackness and white. I practice have the 950 and 850 filters and will effort them today, but since the 760 filter seemed to make my hotspots substantially worse, I'chiliad thinking that the 850 and 950 might make this unmanageable.
I'm using the 2 cheap XC lens (16-50 and 50-230); they are supposed to be good up to f8 usually, and with my 590 sensor filter and no boosted filters, they are fine at least to f8 in my feel. It is when I add together these filters that the hot spots become pronounced, and to my rookie mind I think this might be because the proportion of infrared low-cal is increasing (and it is this light that is prone to hotspots).
Yes , hotspot can be an event, peculiarly with some cheaper filters adding to the lens sensitivity.
I utilise the Hoya R72 (720nm) the almost and just try to go on the sun out of the prototype.
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Re: Monochrome filters on infrared camera
The AR-Coated Kolari Vision filters appears to reduce the severity and incidence of hotspots in many situations.
From what I gathered from Ilija, on some bodies the only thing you tin can really practice to mitigate a stubborn hotspot is to have an internal filter that doesn't reflect IR, like their upcoming HSK blanket for the internal filter.
I've shot full spectrum cameras without any AR/HSK with Rocolax filters from eBay, and they hotspotted pretty awfully on both my S700 and my HS25exr. That likely was made more severe by the long focal lengths, number of lens elements, and the relatively small apertures on both bodies. The optical qualities of my Rocolax filters are likewise unknown.
The merely AR-coated filter I've used was on my GoPro Hero4 Black (AR-coated Bluish/IR NDVI Filter) for agricultural field survey work, and it certainly mitigated the lens hotspot I got when it wasn't using an external filter, or when nosotros used information technology with our unbranded (BG? Schott? who knows) Nearly-IR laissez passer filter glass of unknown provenance.
My adjacent filters volition all be AR-coated, that'southward for sure.
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Source: https://www.dpreview.com/forums/thread/4404483
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