Zavedení
The Datacolor Spyder LensCal is a precision tool designed to assist photographers in calibrating the autofocus performance of their camera and lens combinations. It provides a reliable method for measuring and correcting autofocus inaccuracies, ensuring your lenses deliver razor-sharp focus. This compact, lightweight, and durable device features an integrated level and tripod mount for ease of use.
Modern DSLR cameras often include a feature to store autofocus correction data for specific lenses. The Spyder LensCal is engineered to facilitate this process, helping you fine-tune your camera's custom settings for optimal lens performance.
Figure 1: The Spyder LensCal in its operational configuration, displaying the focus target and measurement scale.
Nastavení
Proper setup of the Spyder LensCal is crucial for accurate calibration. Follow these steps to prepare the device and your camera for the calibration process.
- Rozložte zařízení: Gently unfold the Spyder LensCal until the main target board and the ruler scale are in their upright positions. Ensure the device is stable.
- Montáž: The Spyder LensCal features a standard tripod mount on its base. For best results, mount the device on a sturdy tripod to ensure it remains perfectly still during calibration. An integrated bubble level is provided on the base to help ensure the device is perfectly horizontal.
- Umístění kamery: Place your camera on a separate, stable tripod. Position the camera so that its sensor plane is parallel to the Spyder LensCal's target board. The distance between the camera and the LensCal should be appropriate for the lens you are calibrating, typically at least 50 times the focal length of the lens.
- Osvětlení: Ensure consistent and even lighting on the Spyder LensCal target. Avoid harsh shadows or reflections that could interfere with autofocus detection.
Figure 2: The Spyder LensCal mounted on a tripod, demonstrating its stability for calibration.
Figure 3: Proper setup with camera and Spyder LensCal on tripods for accurate calibration.
Návod k obsluze
The Spyder LensCal is used in conjunction with your camera's autofocus micro-adjustment (AFMA) or autofocus fine-tuning feature. The goal is to find the AFMA setting that results in the sharpest focus on the '0' mark of the LensCal's ruler.
- Nastavení fotoaparátu:
- Set your camera to its lowest native ISO.
- Use a wide aperture (e.g., f/2.8 or wider) to minimize depth of field, making focus errors more apparent.
- Set your camera to single-point autofocus (AF-S or One-Shot AF).
- Ensure your camera's autofocus micro-adjustment/fine-tuning feature is enabled. Consult your camera's manual for specific instructions on accessing and using this feature.
- Focus on the Target: Using your camera's central autofocus point, focus precisely on the small checkerboard target in the center of the Spyder LensCal's main board.
- Udělejte zkušební fotografii: Capture an image of the Spyder LensCal.
- Review the Photo:
- Zoom in on the captured image on your camera's LCD screen or transfer it to a computer for detailed inspection.
- Examine the ruler scale on the Spyder LensCal. The '0' mark should be the sharpest point. If the sharpest point is in front of '0' (e.g., at -1, -2), your lens is back-focusing. If it's behind '0' (e.g., at +1, +2), your lens is front-focusing.
- Adjust AFMA: Based on your review, adjust the autofocus micro-adjustment setting in your camera's menu.
- If back-focusing, apply a positive adjustment (e.g., +5).
- If front-focusing, apply a negative adjustment (e.g., -5).
- Repeat and Refine: Take another test photo with the new AFMA setting. Continue to adjust and repeat the process until the '0' mark on the Spyder LensCal's ruler is consistently the sharpest point in your images. This iterative process ensures precise calibration.
Figure 4: Camera LCD showing the Spyder LensCal target during the calibration process.
Figure 5: Camera LCD showing the autofocus micro-adjustment settings, where adjustments are made.
Údržba
The Spyder LensCal is designed for durability, but proper care will ensure its longevity and continued accuracy.
- Čištění: Use a soft, lint-free cloth to wipe the surfaces of the LensCal. If necessary, dampen the cloth slightly with water or a mild, non-abrasive cleaning solution. Avoid harsh chemicals or abrasive materials that could scratch the target or ruler.
- Skladování: When not in use, fold the Spyder LensCal to its compact form. Store it in a clean, dry place, away from direct sunlight and extreme temperatures. The original packaging can provide good protection.
- Zacházení: Handle the device with care to avoid bending or damaging the target board or ruler, which could affect calibration accuracy.
Figure 6: The Spyder LensCal in its compact, folded position for storage.
Odstraňování problémů
If you encounter issues during the calibration process, consider the following common troubleshooting tips:
- Nekonzistentní výsledky:
- Ensure both the camera and the Spyder LensCal are perfectly stable and not moving during the shot. Use sturdy tripods.
- Check lighting conditions. Uneven or insufficient light can affect autofocus performance.
- Verify that the camera's sensor plane is parallel to the LensCal's target.
- Make sure you are focusing on the central checkerboard target, not the ruler.
- Difficulty Achieving Sharp Focus:
- Increase the distance between the camera and the LensCal.
- Ensure your lens is clean and free of dust or smudges.
- Test with a different lens if possible, to rule out a lens-specific issue.
- Camera Does Not Have AFMA/Fine-Tuning:
- Some entry-level cameras may not have this feature. Consult your camera's manual to confirm. The Spyder LensCal is primarily for cameras with this capability.
Specifikace
| Funkce | Detail |
|---|---|
| Značka | Datacolor |
| Model | SLC100 |
| Barva | Černá, bílá |
| Rozměry (D x Š x V) | 17.53 x 4.01 x 31.01 cm (6.9 x 1.58 x 12.21 palce) |
| Hmotnost | 113.4 gramů (0.25 lb) |
| Materiál | Plast |
| Speciální funkce | Adjustable, Compact, Lightweight, Integrated Level, Tripod Mount |
| Kompatibilní zařízení | Canon 50D, 7D, 5DMkII, 5DMkIII, 1DMkIII, 1DMkIV, 1DsMkIII, 1Dx, 1Dc; Nikon D7000, D300, D300s, D700, D800, D800E, D3, D3s, D3x, D4; Sony A850, A900, A77; Olympus E-30, E-620, E-5; Pentax K-20D, K-30, K-5, K-7D, K-2000/K-m, K200D, 645D, K-x |
Informace o záruce
The Datacolor Spyder LensCal comes with a manufacturer's warranty of 2 roky. Please retain your proof of purchase for warranty claims. For detailed terms and conditions, refer to the warranty documentation included with your product or visit the official Datacolor webmísto.
Podpora
Datacolor is renowned for its commitment to customer support. If you require assistance with your Spyder LensCal or have questions regarding its use, please visit the official Datacolor webnebo kontaktujte jejich zákaznický servis.
Více informací a podpůrných zdrojů naleznete na adrese Datacolor Brand Store on Amazon.
