I. Understanding Infrared Photography
* What is Infrared? Infrared light is outside the visible spectrum, longer wavelengths than red. Different materials reflect or absorb it differently than they do visible light, creating unique tonal renditions.
* Why Infrared for Black and White Landscapes?
* Dreamlike Skies: Blue sky turns almost black.
* Glowing Foliage: Healthy green leaves reflect a lot of IR, resulting in a bright, almost white appearance.
* Dramatic Contrast: Enhanced contrast between different elements.
* Unique Aesthetic: A surreal, otherworldly look.
* Filters vs. Conversion: You can use IR filters on a regular camera lens, but they require very long exposures (several seconds to minutes, even in bright sunlight) and make focusing difficult. A converted camera has the IR-blocking filter removed and replaced with an IR-passing filter *inside* the camera, allowing for much faster and easier shooting.
II. Choosing a Camera for Conversion
* Used Cameras are Ideal: Since you're permanently altering the camera, using a used or older model is a good idea. Less financial risk if something goes wrong or you decide IR photography isn't for you.
* Sensor Size:
* APS-C (Crop Sensor): A good balance of size, cost, and image quality.
* Full Frame: Offers wider fields of view and potentially better image quality, but is more expensive.
* Micro Four Thirds: Smaller and lighter, with a wide selection of lenses.
* Live View is Essential: Because you can't see through the viewfinder with an IR filter on the sensor, you *need* a camera with a reliable live view system for composition and focusing.
* Manual Focus: While autofocus *might* work in some situations, manual focus is often more accurate, especially for landscapes. Cameras with good manual focus aids (focus peaking, magnification) are preferable.
* Mirrorless vs. DSLR: Mirrorless cameras are generally preferred for IR conversions because their focusing system is not affected by the IR filter, unlike DSLRs, where autofocus may become inaccurate.
* Sensor Resolution (Megapixels): Don't get too hung up on megapixels. Anything 12MP or higher is generally sufficient for landscape photography.
* Existing Lens Mount: Using a camera that shares a lens mount with your existing lenses can save you money.
III. The Conversion Process
* DIY vs. Professional: *Do not attempt this unless you are experienced with electronics repair and comfortable disassembling delicate equipment.* You risk permanently damaging your camera. Professional conversion is highly recommended.
* Finding a Conversion Service: Look for reputable companies specializing in IR camera conversions. Examples include:
* Kolari Vision
* LifePixel
* IR Modifications
* Choosing the Right IR Filter: This is the most crucial decision. Different filters allow different wavelengths of IR light to pass through, resulting in different looks. Here are some common choices:
* 720nm: A very popular choice, allows a bit of visible light to pass through, resulting in images with some color information. Can be converted to B&W or processed to create false-color IR images. Good all-around choice.
* 830nm: Pure infrared, almost no visible light passes through. Produces very contrasty, stark black and white images. Less flexible for color manipulation.
* 590nm: Allows more visible light, resulting in images with strong color information. Often used for "false color" infrared photography where the colors are manipulated in post-processing.
* The Conversion Steps (Simplified): (Don't try this at home unless you know what you're doing!)
1. Disassembly: Carefully disassemble the camera.
2. Removing the IR Blocking Filter: Locate and remove the hot mirror (IR blocking filter) in front of the sensor. This is typically glued in place and requires patience and precision.
3. Installing the IR Passing Filter: Install the chosen IR filter in place of the hot mirror. Ensure it's perfectly clean and securely mounted.
4. Reassembly: Carefully reassemble the camera.
5. Sensor Calibration: The sensor may need to be calibrated after the conversion.
* Considerations for the Conversion Service:
* Experience: Choose a company with a proven track record.
* Warranty: Does the conversion include a warranty?
* Sensor Cleaning: Ask if sensor cleaning is included as part of the conversion.
* Turnaround Time: How long will the conversion take?
* Filter Options: Do they offer a wide range of IR filters?
IV. Shooting Infrared Landscapes
* Shooting in RAW: Always shoot in RAW format to preserve the most information for post-processing.
* White Balance: Set a custom white balance. A good starting point is a white balance off of green grass or foliage under sunlight. You'll likely need to adjust it in post-processing anyway.
* Metering: The camera's meter may not be accurate in IR. Use spot metering and adjust exposure as needed. Generally, you'll need to overexpose slightly. Review your histogram and adjust accordingly.
* Focusing: Manual focus is generally more reliable than autofocus. Use live view and zoom in to ensure critical sharpness.
* Lenses: Some lenses exhibit "hot spots" (a bright spot in the center of the image) when used with IR. Research your lenses beforehand to see if they are known to have this issue. Older manual focus lenses are often a good choice.
* Time of Day: Midday sun with puffy clouds is ideal. Clouds create drama and the sun provides plenty of IR radiation. Overcast days can produce more muted results.
* Composition: Think about how infrared light will affect the scene. Look for subjects with strong foliage, water, and sky.
V. Post-Processing
* Software: Adobe Lightroom, Photoshop, Capture One, or other RAW processing software.
* Basic Adjustments:
* White Balance: Fine-tune the white balance.
* Exposure: Adjust the exposure as needed.
* Contrast: Increase contrast to enhance the dramatic effect.
* Highlights and Shadows: Recover details in highlights and shadows.
* Clarity and Texture: Use these to enhance detail.
* Channel Mixer (for 720nm Filters): The channel mixer is your best friend for black and white conversion. In Photoshop, go to Layer -> New Adjustment Layer -> Channel Mixer. Experiment by swapping the red and blue channels. This is a key technique for IR B&W conversion and produces dramatic changes in the tonal values. The green channel usually adds too much noise. You can also get some good results by swapping the red and green channels and desaturating.
* Grading: Use curves and other color grading tools to fine-tune the tones and create the desired mood.
* Sharpness: Apply sharpening selectively.
* Dust Removal: Check for and remove any dust spots.
VI. Key Considerations Before Converting
* Cost: Camera conversion can be expensive (several hundred dollars).
* Commitment: This is a permanent modification. You won't be able to use the camera for regular photography anymore.
* Learning Curve: IR photography requires some experimentation and learning to get the best results.
* Alternative Options: Before committing to a conversion, try using IR filters on a regular camera to see if you enjoy the look. This will give you a taste of IR photography without the investment of a conversion.
By understanding these steps and considerations, you can successfully convert a camera for infrared black and white landscape photography and unlock a new level of creative expression. Remember to do your research, choose a reputable conversion service, and practice your post-processing skills to achieve stunning results.