We currently have a 6 filters to pick from. We offer the 720nm standard infrared, 800nm infrared, 850nm deep infrared, 665nm extra color infrared, 590nm infrared, and a full spectrum filter. All filters are the same price.
The Standard IR Filter (720nm) allows for good color for false color, and good contrast for black and white. This is equivilant to the Hoya R72 and Wratten 89b.
The Ultra Color filter (590nm) lets more visible light in, producing the most vibrant colors. Leaves are golden yellow, skies are bright blue.
The Enhanced Color filter (665nm) has an effect between the 720nm and 590nm, producing more vibrant colors than the 720nm for pale yellow leaves and brighter blue skies.
The Black and White filter (800nm) is good for dedicated black and white IR. The camera and will produce bright whites and pronounced darks. Equivilent to the Wratten 87.
The Deep Black and White filter (850nm) is good for a dedicated black and white IR. The camera and will produce bright whites and pronounced darks. It will have a little more contrast compared to the 800nm filter, but it will also have a few less stops of light. Equivilent to the Wratten 87c.
The Full Spectrum filter (clear glass) makes the camera sensitive to UV, visible, and IR light, allowing switching between various external filters to acheive the desired effect, this allows going between infrared and regular shooting with one camera, however on DSLRs opaque infrared filters will block composition.
(click the pictures below for higher resolution)
|Direct from Camera||Channel Swapped||Black & White|
The first consideration is deciding if you will shoot color or not. If you plan to shoot only B&W then the 800nm and 850nm filters are the best choice. The difference between the two is minor, with the 850nm providing a little more contrast and a little less light sensitivity. If you will shoot even occasional color, then you will need to go with the 720nm filter or below. When choosing between the 590nm, 665nm, and 720nm, the first consideration is your aesthetic preferance. If you like the yellow leaf effect, you would need to go with the 590 or 665nm option. If you would like to shoot regular color shots, with white leaves and blue skies, then the 720nm filter is probably right for you.
With these enhanced color filters, you will have an increased color range to work with. With processing, it is possible to desaturate photos from these two filters to look like the 720nm image. This adds some more flexibility when shooting, and allows for good color results in some shooting situations that would not work so well with the standard 720nm filter. Some cameras don't have very good color results with the 720nm filter, such as the Nikon 5400 and some Canons powershots, so the 665nm filter can overcome this effect. Another really nice benefit with these filters is that you can use higher cutoff IR filters over them. For example, with a 665nm conversion you could use a 720nm, 800nm, 850nm and still take handheld pictures that will look exactly like the higher cutoff filter. You couldn't use any lower filter though, like the 590nm filter. If the camera you are converting has live view, this is an easy way to take advantage of both the color and B&W aspects of IR.
A downside to these two filters is that they have less contrast for B&W images. Another downside is that cameras will have a harder time setting a white balance with the enhanced color filters. These filters can be more unpredictable, yielding different results depending on camera model and shooting conditions. See our article on How DSLRs and Compacts handle Color.
On most compact cameras the replacement filters need to be very thin and will leak more visible light, so 590, 665, and 720 filters can produce duller color. The 800 and 850 filters will also leak a little visibe light. They will still be monochromatic but they may be red or blue tinged and require processing.
To achieve a good false color effect with the 590 and 665 filters, a custom white balance is crucial. You should not order these filters if your camera does not have a custom WB option. Also, just because your camera has a custom white balance setting, does not guarantee that you can achieve images like above with these filters. Camera white balances were not made to work in infrared, and the camera may not be able to measure a white balance properly leaving you with unexpected results. 590 filters have the most trouble with this.
If your camera does not have a custom white balance option, the 800 and 850 filters still work for B&W photography. The 720 filter can still be used to get good false color results even with automatic white balance, although the results are not quite as reliable.
The full spectrum, or clear filter, does not have many distinct uses on its own, but rather it gives you the flexibility to switch between different external infrared filters and still shoot handheld. It makes the camera sensitive to visible, infrared, and UV light. See our Full Spectrum article to see when you should consider full spectrum as an option.
While image quality is better, they have their own set of problems for infrared that stem from using a seperate sensor for autofocus and exposure, and imaging. Glass will bend different wavelengths of light different amounts, so consequently when shooting in the infrared wavelengths lenses will exhibit a focus shift. For a camera to autofocus properly in infrared , we use replacement glass filters with a thickness to compensate for the infrared focus shift. While this works very well for point and shoots and mirrorless cameras, it does not work for all lenses in an IR converted DSLR. The reason for this is that because different lenses use different numbers of glass elements and different types of glass, they will not all have the same degree of focus shift between visible and infrared light. Since DSLRs focus with a different sensor than the imaging sensor (which still focuses to visible light after a conversion) the camera has no way to compensate for a lens with an irregular IR focus shift. Using this lens would then require stepping up the aperture, manual focusing, or having the camera calibrated for that lenses focus shift.
DSLRs additionally use this secondary sensor for exposure controls. The 720nm filter usually requires an exposure consistent with visible light, and provides properly exposed images. Sometimes, particulary with other filters, the visible and infrared light in a scene isn't the same, and an exposure value (EV) has to be dialed in to compensate.
Yet another problem is using an opaque filter on the lens. This prevents the use of the viewfinder and causes problems with auto exposure and autofocus, which all utilize visible light.
If the DSLR has live view though, all of these problems can be avoided. When using live view, the camera uses the imaging sensor for autofocus, exposure, and preview, resulting in flawless performance.
Two spectrum is our new unique conversion that makes the camera sensitive to visible and infrared light and blocks UV light. If you do not plan to shoot UV, this is the best option and gives better color rendition for visible light photography. See our Full Spectrum article to see when you should consider a two spectrum conversion as an option.