1. ບົດແນະນຳ
ຂອບໃຈສໍາລັບການຊື້asing the Sigma 10-20mm f/4-5.6 EX DC HSM ultra-wide angle zoom lens. This lens is designed specifically for digital SLR cameras with APS-C size image sensors, offering an expansive field of view ideal for landscape, architectural, and interior photography. Its advanced optical design and Hyper-Sonic Motor (HSM) ensure high performance and user convenience.
ຄຸນນະສົມບັດທີ່ສໍາຄັນປະກອບມີ:
- HSM (Hyper-Sonic Motor): Provides fast, quiet, and precise autofocus, with full-time manual focus override.
- ອົງປະກອບ Lens Aspherical: Three aspherical lens elements effectively correct distortion and spherical aberrations.
- SLD (Special Low Dispersion) Glass: Three SLD glass elements minimize chromatic aberration for superior image quality.
- Internal Focusing System: Maintains the overall lens length during focusing and allows for the convenient use of polarizing filters.
2. ຕັ້ງຄ່າ
2.1 ການຕິດເລນ
- ກວດໃຫ້ແນ່ໃຈວ່າທັງກ້ອງຖ່າຍຮູບ ແລະເລນປິດຢູ່.
- ຖອດຝາປິດກ້ອງຫຼັງອອກຈາກເລນ ແລະຝາປິດຕົວອອກຈາກກ້ອງ.
- Align the mounting index mark on the lens barrel with the corresponding mark on the camera body.
- Insert the lens into the camera mount and turn it clockwise until it clicks into place. Do not force the lens.
2.2 ການຖອດເລນ
- ໃຫ້ແນ່ໃຈວ່າກ້ອງຖ່າຍຮູບປິດຢູ່.
- While pressing the lens release button on the camera body, turn the lens counter-clockwise until it stops.
- ເອົາເລນອອກຈາກຕົວກ້ອງຖ່າຍຮູບຢ່າງລະມັດລະວັງ.
- Attach the rear lens cap to the lens and the body cap to the camera to protect the sensor and lens elements.
2.3 ການຕິດຝາ Lens Hood
The included petal-type lens hood helps to block extraneous light and reduce flare. Align the red dot on the lens hood with the red dot on the front of the lens, then turn the hood clockwise until it locks into place. To remove, reverse the process.
ຮູບທີ 1: The Sigma 10-20mm f/4-5.6 EX DC HSM lens. This image illustrates the general appearance of the lens, which attaches to compatible Sony Alpha DSLR camera bodies.
3. ການເຮັດວຽກຂອງເລນ
3.1 ການສຸມໃສ່
This lens features a Hyper-Sonic Motor (HSM) for fast and quiet autofocus. It also allows for full-time manual focus override.
- ໂຟກັສອັດຕະໂນມັດ (AF): Set the AF/MF switch on your camera body to 'AF'. The lens will automatically focus when the shutter button is half-pressed.
- Manual Focus (MF): Set the AF/MF switch on your camera body to 'MF'. Rotate the focus ring on the lens barrel to adjust focus manually. Even in AF mode, you can fine-tune focus by rotating the focus ring after autofocus has been achieved.
3.2 ຊູມ
To change the focal length, rotate the zoom ring on the lens barrel. The lens offers a focal range from 10mm (ultra-wide) to 20mm (wide-angle). The aperture will vary between f/4 at 10mm and f/5.6 at 20mm.
3.3 ການໃຊ້ຕົວກອງ
The lens has a filter thread at the front. Due to its internal focusing system, the front element does not rotate, making it convenient to use polarizing filters or other special effect filters. Ensure the filter size matches the lens's filter thread diameter.
4. ບໍາລຸງຮັກສາ
4.1 ການເຮັດຄວາມສະອາດເລນ
- ໃຊ້ແປງເປົ່າເພື່ອເອົາຝຸ່ນ ແລະ ອະນຸພາກທີ່ວ່າງອອກຈາກໜ້າເລນ.
- For smudges or fingerprints, apply a small amount of lens cleaning solution to a clean microfiber cloth and gently wipe the lens in a circular motion from the center outwards.
- ຢ່າໃຊ້ວັດສະດຸຂັດສີ ຫຼືສານເຄມີທີ່ຮຸນແຮງ.
4.2 ການເກັບຮັກສາ
- ແນບຝາແວ່ນດ້ານໜ້າ ແລະ ຫລັງທຸກຄັ້ງເມື່ອບໍ່ໄດ້ໃຊ້ເລນ.
- ເກັບຮັກສາເລນໄວ້ໃນບ່ອນທີ່ເຢັນ, ແຫ້ງ, ຫ່າງຈາກແສງແດດໂດຍກົງແລະອຸນຫະພູມທີ່ຮຸນແຮງ.
- ຖ້າເກັບຮັກສາໄວ້ເປັນເວລາດົນ, ໃຫ້ພິຈາລະນານໍາໃຊ້ຕົວແທນ dehumidifying ເພື່ອປ້ອງກັນການຂະຫຍາຍຕົວຂອງ mold.
4.3 ຂໍ້ຄວນລະວັງໃນການຈັດການ
- Avoid exposing the lens to water or excessive humidity.
- ຫ້າມຖິ້ມ ຫຼືເອົາເລນໄປຮັບຜົນກະທົບຢ່າງແຮງ.
- Do not attempt to disassemble the lens, as this will void the warranty.
5. ການແກ້ໄຂບັນຫາ
5.1 Autofocus Not Working
- Check if the AF/MF switch on your camera body is set to 'AF'.
- ໃຫ້ແນ່ໃຈວ່າມີແສງສະຫວ່າງ ແລະ ຄວາມຄົມຊັດພຽງພໍໃນສາກເພື່ອໃຫ້ລະບົບໂຟກັສເຮັດວຽກໄດ້ຢ່າງມີປະສິດທິພາບ.
- ເຊັດທຳຄວາມສະອາດຈຸດຕິດຕໍ່ໄຟຟ້າທັງໃນເລນ ແລະ ຕົວກ້ອງຖ່າຍຮູບດ້ວຍຜ້າສະອາດ ແລະ ແຫ້ງ.
5.2 Image Quality Issues (e.g., blurry images)
- ກວດສອບວ່າເລນຖືກຕິດກັບຕົວກ້ອງຖ່າຍຮູບຢ່າງແໜ້ນໜາແລ້ວ.
- Check your camera's shutter speed and aperture settings. A slow shutter speed can cause motion blur, and an incorrect aperture can lead to out-of-focus areas.
- Ensure the lens elements are clean and free from smudges or dust.
- If using manual focus, confirm that the subject is sharply focused.
5.3 Lens Not Recognized by Camera
- Remove the lens and reattach it, ensuring it clicks firmly into place.
- Clean the electrical contacts on both the lens and the camera body.
- Check your camera's firmware for updates, and ensure it is compatible with the lens.
6. ຂໍ້ມູນຈໍາເພາະ
| ຄຸນສົມບັດ | ຂໍ້ມູນຈໍາເພາະ |
|---|---|
| ຄວາມຍາວໂຟກັສ | 10-20ມມ |
| ຮູຮັບແສງສູງສຸດ | f/4-5.6 |
| ປະເພດເລນ | Ultra-Wide Angle Zoom |
| ການຕິດຕັ້ງທີ່ເຂົ້າກັນໄດ້ | Sony A-mount, Sony E-mount (with adapter) |
| ໄລຍະການໂຟກັສຕໍ່າສຸດ | ປະມານ 9.4 ນິ້ວ (24 ຊມ) |
| ຂະໜາດຕົວກອງ | (Not specified in provided data, typically 77mm or 82mm for similar lenses) |
| ຂະໜາດ (ເສັ້ນຜ່າສູນກາງ x ຍາວ) | 3.19 x 3.29 x 3.19 ນິ້ວ (ປະມານ) |
| ນ້ຳໜັກ | 1.78 ປອນ (ປະມານ) |
| ໝາຍເລກຕົວແບບ | Sigma-10-20-Sony |
7. ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ
Sigma lenses typically come with a limited warranty covering manufacturing defects. Please refer to the warranty card included with your product or visit the official Sigma webເວັບໄຊສໍາລັບເງື່ອນໄຂການຮັບປະກັນລາຍລະອຽດສະເພາະກັບພາກພື້ນຂອງທ່ານ.
For technical support, service, or inquiries regarding your Sigma 10-20mm f/4-5.6 EX DC HSM lens, please contact Sigma customer service through their official website or the authorized distributor in your country. Have your lens model number and purchase information ready when contacting support.
