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Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Sony E-Mount


Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Sony E-Mount
The Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Sony E-Mount is a versatile wide-angle to portrait-length zoom characterized by its f/2.8 constant maximum aperture. True to the Contemporary line's core concept, the 28-70mm F2.8 DG DN | Contemporary was developed to offer the right balance of performance and portability, and as such, this large-aperture standard zoom delivers outstanding image quality that rivals Art line lenses in a body light enough for day-to-day use.
More lightweight and compact than similar 24-70mm lenses, its optical design is based on the 24-70mm F2.8 DG DN | Art and incorporates two FLD and two SLD low-dispersion elements plus three aspherical elements that reduce a variety of aberrations to achieve high sharpness, enhanced clarity, and improved color accuracy.
The Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Sony E-Mount features just one lightweight focusing element, which keeps the AF unit small. This, along with a quiet and fast stepping motor, makes for responsive and near-silent autofocus performance, an ideal combination for filmmakers looking for a high-performance, lightweight, and easy-to-handle camera system that works well with a gimbal or other accessories.
Two F Low Dispersion (FLD) and two Special Low Dispersion (SLD) elements reduce chromatic aberrations and color fringing
Super Multi-Layer and Nano Porous coatings minimize lens flare and ghosting and produce contrast-rich and color-neutral imagery
Rounded nine-blade diaphragm for a pleasing bokeh quality
Specifications:
Focal Length | 28 to 70mm |
Maximum Aperture | f/2.8 |
Minimum Aperture | f/22 |
Lens Mount | Sony E |
Lens Format Coverage | Full-Frame |
Angle of View | 75.4° to 34.3° |
Minimum Focus Distance | 7.5" / 19 cm |
Maximum Magnification | 4.6x |
Optical Design | 16 Elements in 12 Groups |
Diaphragm Blades | 9, Rounded |
Focus Type | Autofocus |
Image Stabilization | No |
Filter Size | 67 mm (Front) |
Dimensions (ø x L) | 2.8 x 4" / 72.2 x 101.5 mm |
Length at Maximum Extension | 4.97" / 126.3 mm |
Weight | 16.6 oz / 470 g |
Tips for protecting your children online
In today's digital age, ensuring your children's safety while they browse the internet is paramount. As they explore the vast online world through smartphones, gaming consoles, laptops, and other devices, it's essential to implement measures to shield them from potentially harmful content and interactions. Here are some tips to help you safeguard your children online:
1. Communication is Key
Open and ongoing communication with your children about online safety is crucial. Discuss the potential dangers they may encounter online, such as pornography, cyberbullying, and violent content. Encourage them to come to you with any concerns or questions they may have.
2. Set Clear Boundaries
Establish clear rules and boundaries regarding internet usage. Define appropriate time limits for browsing and specify which websites and apps are off-limits. Make sure your children understand the consequences of violating these rules. You can also restrict some of these apps or online content utilising device level parental controls explained below.
3. Utilise Parental Controls
Take advantage of the parental control features available on devices and internet browsers. These controls allow you to block access to specific websites, set age-appropriate content filters, and monitor your children's online activities. Familiarise yourself with the parental control options on smartphones, gaming consoles, and laptops to effectively manage your children's online experiences.
4. Educate Yourself
Stay informed about the latest trends and technologies related to online safety. Familiarise yourself with popular social media platforms, gaming communities, and messaging apps that your children may use, including the functions they provide. This knowledge will help you understand the potential risks and take appropriate action to protect your children.
5. Monitor Their Online Activities
Regularly monitor your children's online activities to ensure they are adhering to the rules and staying safe. Keep an eye on their browsing history, social media interactions, and messaging apps. Be vigilant for any signs of cyberbullying or exposure to inappropriate content.
6. Encourage Safe Online Behavior
Teach your children about the importance of practicing safe online behavior. Remind them never to share personal information, such as their full name, address, or phone number, with strangers online. Encourage them to think critically about the content they encounter and to report anything that makes them feel uncomfortable or unsafe.
7. Lead by Example
Be a positive role model for your children by demonstrating responsible and respectful online behavior yourself. Show them how to navigate the internet safely and responsibly, and emphasize the importance of treating others with kindness and empathy online.
8. Reporting abuse, making complaints and finding more information
For additional resources and guidance on online safety, visit the Australian e-Safety Commissioner's website at www.esafety.gov.au. Here, you'll find a wealth of information, including tips for parents, educational resources for children, and tools for reporting online abuse and harassment.
You can also report abuse through the website’s online form.
By following these tips and utilising available resources, you can help keep your children safe from pornography, cyberbullying, violent content, and other unsafe material while they navigate the internet. Remember, proactive measures and open communication are key to fostering a safe and positive online environment for your family.
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