Sony SEL1855
Sony Alpha SEL1855 E-mount 18-55mm F3.5-5.6 OSS Lens User Manual
Model: SEL1855
Uvod
The Sony Alpha SEL1855 E-mount 18-55mm F3.5-5.6 OSS Lens is a versatile standard zoom lens designed for Sony E-mount cameras. It offers a 3x zoom range, covering a wide angle of 27mm to a medium telephoto of 82.5mm (35mm full frame equivalent), making it suitable for various photography styles including landscapes, snapshots, and portraits. This lens incorporates Optical SteadyShot (OSS) for image stabilization and an internal drive motor for smooth, quiet autofocus and aperture operation.
Kaj je v škatli
- Sony Alpha SEL1855 E-mount 18-55mm F3.5-5.6 OSS Lens (Silver)
- Sončna zaslonka (ALC-SH112)
- Sprednji pokrov objektiva
- Pokrov leče zadaj
Nastavitev
To attach the lens to your camera, align the white index mark on the lens barrel with the corresponding white index mark on your camera body. Rotate the lens clockwise until it clicks into place. To detach, press the lens release button on the camera body and rotate the lens counter-clockwise.
Figure 1: The Sony Alpha SEL1855 E-mount 18-55mm F3.5-5.6 OSS Lens. Ensure proper alignment when attaching to the camera body.
Attach the lens hood (ALC-SH112) by aligning its mark with the mark on the lens and twisting until it locks. The lens hood helps to block unwanted light and protect the front element.
Upravljanje objektiva
Optični stabilizator slike (OSS)
This lens features built-in Optical SteadyShot (OSS) image stabilization. Gyro sensors within the lens detect even the slightest camera movement, and a stabilization lens precisely shifts to counteract any image blur. This technology provides approximately a four-stop image stabilization advantage, contributing to sharp photos and stable videos, especially in low-light conditions or when shooting handheld.
Notranje fokusiranje
The internal focusing mechanism means that only the middle groups of the optical system move to achieve focus. This design ensures that the overall length of the lens does not change during focusing. Key benefits include fast autofocusing, a short minimum focusing distance, and the convenience that the filter thread at the front of the lens does not rotate, which is ideal when using polarizing filters.
Krožna zaslonka
The lens is designed with circular aperture blades. When the aperture is changed to defocus the background, light sources appear blurred, creating a 'bokeh' effect. The circular design ensures that these defocused points of light are smooth and natural, avoiding the polygonal shapes often produced by conventional aperture blades.
Aspherical Lens Elements
Aspherical lens elements are incorporated to significantly reduce spherical aberration, which is a misalignment of light rays that can degrade image quality, especially at large apertures. These specially shaped elements help maintain high sharpness and contrast even at maximum aperture. Their use also contributes to reducing the overall size and weight of the lens.
Distance Encoder
The distance encoder is a crucial component for ADI (Advanced Distance Integration) flash metering. It directly detects the position of the focusing mechanism and sends a signal to the camera's CPU to measure the distance to the subject. This data is vital for calculating the appropriate flash output during flash photography, ensuring precise and consistent exposure regardless of subject or background reflectance.
Figure 2: Modulation Transfer Function (MTF) chart for the E 18-55mm F3.5-5.6 OSS lens. This chart illustrates the lens's optical performance, showing contrast and resolution at different spatial frequencies.
Vzdrževanje
Za zagotovitev dolge življenjske dobe in optimalne zmogljivosti objektiva upoštevajte naslednja navodila za vzdrževanje:
- Čiščenje površine leče: Uporabite mehko krpo, ki ne pušča vlaken in je posebej zasnovana za optične leče. Za trdovratne madeže nanesite majhno količino tekočine za čiščenje leč na krpo in ne neposredno na lečo.
- Odstranjevanje prahu: Use a blower brush to remove dust from the lens surface. Avoid wiping dry, as this can scratch the coating.
- Shranjevanje: Store the lens in a dry, cool place away from direct sunlight and extreme temperatures. Use lens caps when not in use to protect the front and rear elements.
- Izogibajte se vlagi: Do not expose the lens to rain or excessive humidity. If it gets wet, wipe it dry immediately.
Odpravljanje težav
If you encounter issues with your lens, consider the following common troubleshooting steps:
- Objektiv ne ostri:
- Ensure the camera is set to autofocus (AF) mode if you intend to use autofocus.
- Check for sufficient light in the scene. Very low light can hinder autofocus performance.
- Clean the lens contacts on both the lens and camera body with a dry, clean cloth.
- Prepričajte se, da je objektiv varno pritrjen na ohišje fotoaparata.
- Image Stabilization Not Working:
- Verify that Optical SteadyShot (OSS) is enabled in your camera's settings, if applicable.
- Note that OSS is most effective within certain shutter speed ranges and may not fully compensate for extreme camera shake.
- Dust or Spots in Images:
- First, clean the front and rear elements of the lens as described in the Maintenance section.
- If spots persist, the dust may be on your camera's image sensor. Refer to your camera's manual for sensor cleaning procedures or consult a professional.
Specifikacije
| Funkcija | Podrobnost |
|---|---|
| Dimenzije izdelka | 2.36 x 2.44 x 2.44 palcev |
| Teža predmeta | 7.5 unč |
| ASIN | B003U8Q7TC |
| Številka modela artikla | SEL1855 |
| Proizvajalec | Sony |
| Znamka | Sony |
| Opis goriščne razdalje | 18–55 milimetrov |
| Vrsta objektiva | Standardno |
| Združljivi pritrdilni elementi | Sony E |
| Opis objektiva kamere | Compact 3x E-mount zoom lens suitable for various types of photography |
| Prvič na voljo | 17. junij 2003 |
Important Notes and Support
Please note that if this product was purchased as a refurbished item, the original printed documentation may be missing, and the warranty may have expired. Always refer to the specific terms of your purchase for warranty details.
For further support, product registration, or service inquiries, please visit the official Sony support website or contact Sony customer service. You can find more information and support resources on the Sonyjeva trgovina na Amazonu.