I. Understanding Infrared Photography
* What is Infrared Light? Infrared light is part of the electromagnetic spectrum just beyond the visible red light. Humans can't see it, but certain sensors can.
* Why Convert a Camera? Digital camera sensors are designed to capture visible light. Most cameras have an "IR cut filter" to block infrared light to prevent unwanted colors or artifacts. To do true infrared photography, this filter *must* be removed or replaced with a filter that passes only infrared light.
* The "Wood Effect": One of the most striking aspects of IR photography is how it affects foliage. Chlorophyll in healthy plants reflects a significant amount of infrared light. This makes leaves appear bright white in IR images, often referred to as the "Wood Effect" after Robert W. Wood, a pioneer of the field.
II. Choosing a Camera for Conversion
* Older DSLRs or Mirrorless Cameras: Older cameras are often chosen for conversion because they are less expensive and readily available used.
* Dedicated IR Cameras (Rare and Expensive): Some companies (rarely these days) offered cameras specifically designed for IR photography. These have the IR cut filter removed at the factory.
* Consider Sensor Size: Crop sensor (APS-C) or full-frame doesn't matter much for IR.
* Live View/Focusing: Live view focusing is almost essential. IR light focuses differently than visible light. Your viewfinder might not be accurate after conversion.
* Avoid Cameras with IBIS Issues: Some cameras with in-body image stabilization (IBIS) can have focus issues after conversion. Research specific camera models beforehand. If possible, disable IBIS after conversion.
* Important! Do your research! Search for information on specific camera models to see if others have had success with IR conversion on that model.
III. The Conversion Process
This is a delicate process best left to professionals. Attempting this yourself can damage your camera beyond repair.
* Professional Conversion Services: Companies like Kolari Vision, LifePixel, and Spencer's Camera & Photo specialize in IR camera conversions.
* Types of Conversions:
* Full Spectrum Conversion: The IR cut filter is completely removed. This allows the sensor to capture UV, visible, and IR light. You then use filters on your lens to block specific wavelengths, allowing you to experiment with different IR effects. This is the most versatile option.
* Specific Wavelength Conversion (e.g., 720nm, 850nm): The IR cut filter is replaced with a filter that only allows a specific wavelength of IR light to pass. For example, a 720nm filter blocks all light below 720 nanometers, allowing only infrared light above that point. These conversions give you a more defined "look" straight out of the camera. 720nm is a popular choice for classic black and white IR. 850nm provides a more subtle effect.
* UV/IR Cut Filter (Rare): Replaces the original filter with a UV/IR cut filter, effectively restoring the camera to its original visible light function.
* What the Conversion Service Does:
1. Disassembly: Carefully opens the camera.
2. Filter Removal/Replacement: Removes the IR cut filter and either replaces it with a specific IR filter or leaves it out entirely (full spectrum).
3. Cleaning: Cleans the sensor.
4. Reassembly: Carefully reassembles the camera.
5. Focus Calibration (Sometimes): Adjusts the sensor position (if necessary) to optimize focus for infrared light. This is not always perfect, so relying on live view is still best.
* Cost: The cost of conversion varies depending on the camera model and the type of conversion, but typically ranges from $200 to $500.
IV. Equipment for IR Black and White Landscape Photography
* Converted Camera: The heart of the system.
* Lenses: Most lenses work fine with IR, but some can exhibit "hot spots" (a bright area in the center of the image). Wider lenses are generally better for landscapes. Test your lenses after the conversion. Prime lenses often perform better than zoom lenses in IR.
* Filters (if using a Full Spectrum camera):
* Infrared Pass Filters (720nm, 850nm, etc.): Essential for controlling the IR wavelengths you capture with a full-spectrum camera.
* Color Filters (Optional): Can be used with full spectrum to block some of the visible spectrum for a variety of looks.
* Tripod: Essential for sharp images, especially in lower light conditions. IR requires longer exposures.
* Remote Shutter Release: Minimizes camera shake during long exposures.
* Light Meter (Optional, but Helpful): Your camera's light meter may not be accurate with infrared light. An external light meter can help. Experiment and learn what works best with your converted camera.
* Neutral Density (ND) Filters (Strong): May be needed to darken the image for long exposures in bright sunlight, especially with full-spectrum conversions.
V. Shooting Techniques for IR Black and White Landscape Photography
* Focusing: Use Live View! IR light focuses differently than visible light. Manually focus on the subject in live view, using magnification if possible. Autofocus may not be accurate.
* White Balance: Set a custom white balance. Point the camera at green foliage (or a white card) under the same lighting conditions and set the white balance. This will give you a starting point for post-processing. You can also leave it on auto white balance and adjust in post.
* Exposure: Experiment with different exposure settings. Start with your camera's meter reading and adjust as needed. Infrared light can be tricky to meter. "Expose to the right" (ETTR) without clipping highlights to capture the most information.
* Shoot in RAW: Essential for maximum flexibility in post-processing.
* Best Time of Day: Midday sunlight often produces the most dramatic "Wood Effect" because the sun is directly shining on the foliage.
* Composition: Apply the same principles of composition as you would for visible light landscape photography. Look for strong lines, interesting shapes, and balanced elements.
VI. Post-Processing for IR Black and White
* Software: Adobe Lightroom, Photoshop, Capture One, or similar RAW processing software.
* Basic Adjustments:
* White Balance: Fine-tune the white balance to achieve the desired look. Often, shifting towards blue/purple can enhance the IR effect.
* Exposure: Adjust exposure, contrast, highlights, and shadows to create the desired tonal range.
* Clarity and Texture: Adjust these sliders to bring out detail and sharpness.
* Black and White Conversion:
* Dedicated Black and White Tools: Use the black and white conversion tools in your software (e.g., the B&W Mixer in Lightroom).
* Channel Mixer (Photoshop): A powerful tool for controlling the tonal range of your black and white image. Experiment with adjusting the red, green, and blue channels.
* Tone Curve: Use the tone curve to further refine the contrast and tonal range. S-curves are often used to increase contrast.
* Sharpening: Apply sharpening to enhance detail, but be careful not to over-sharpen.
* Dodging and Burning: Use dodging and burning techniques to selectively lighten or darken areas of the image to guide the viewer's eye and enhance the overall composition.
* Split Toning (Optional): Adding subtle color tones to the highlights and shadows can add depth and visual interest to your black and white images.
VII. Important Considerations
* Hot Spots: Some lenses produce a noticeable bright spot in the center of the image when used with infrared light. Research your lenses beforehand.
* Focus Shift: Infrared light focuses slightly differently than visible light. Use live view and manual focus for best results.
* Sensor Cleaning: Infrared photography tends to reveal dust spots more easily. Keep your sensor clean.
* Practice: Infrared photography takes practice. Experiment with different settings, filters, and post-processing techniques to find what works best for you.
* Safety: When using UV filters (if applicable), be cautious when pointed at the sun. Never look directly at the sun through the viewfinder.
By carefully planning, using the right equipment, and mastering the techniques, you can create stunning and unique black and white landscape photographs with a converted infrared camera. Good luck and enjoy the journey!