Both the Sony FE 85mm 1.8 and the Zeiss Batis 85mm 1.8 are excellent lenses known for their sharpness and image quality. The Zeiss Batis 85mm 1.8 is slightly more expensive but offers better build quality and weather sealing. On the other hand, the Sony FE 85mm 1.8 is more budget-friendly and still delivers impressive results. Ultimately, the choice between the two lenses will depend on your specific needs and budget. **

The choice between the 85mm f/1.8 and the 135mm f/1.8 lens depends on your specific needs and shooting style. The 85mm f/1.8 is a versatile lens that is great for portraits, street photography, and low-light situations. On the other hand, the 135mm f/1.8 offers a longer reach, making it ideal for capturing subjects from a distance and achieving a more compressed background effect. Ultimately, the better lens for you will depend on the type of photography you primarily engage in and your personal preferences. **

The navigation of a rescue helicopter involves a combination of visual and instrument-based navigation. Pilots use visual cues to navigate, such as landmarks, roads, and bodies of water, especially in areas with good visibility. They also use instruments like GPS, radar, and radio navigation aids to determine their position and navigate accurately, especially in low visibility or challenging weather conditions. Additionally, rescue helicopters often have specialized equipment for search and rescue missions, such as infrared cameras and night vision goggles, to aid in navigation and locating individuals in distress. Overall, the navigation of a rescue helicopter requires a high level of skill and training to safely and effectively reach their destination. **

For street photography on the Sony A6300, the 50mm f/1.8 lens would be better suited than the 85mm f/1.8. The 50mm focal length is more versatile for capturing a variety of street scenes and allows for a wider field of view, making it easier to frame shots in dynamic environments. Additionally, the 50mm lens is more compact and lightweight, which is advantageous for shooting on the go and blending in with the surroundings. **

To write an essay about video surveillance and security, start by conducting research to gather information on the topic. You can explore the history of video surveillance, its benefits and drawbacks, its impact on privacy and security, and any relevant laws or regulations. Organize your essay with an introduction that presents the topic, body paragraphs that discuss different aspects of video surveillance, and a conclusion that summarizes your main points. Make sure to include evidence, examples, and statistics to support your arguments and provide a well-rounded perspective on the subject. **

It is not necessary to take the safety cards during the security check as they are typically provided by the airline in the seat pocket in case of an emergency. Security checks are primarily focused on screening passengers and their belongings for prohibited items to ensure the safety of the flight. It is important to follow the instructions of the security personnel and only carry necessary items through the security checkpoint to expedite the process. **

An 85mm lens can be used by hobby photographers for a variety of purposes, including portraits, landscapes, and street photography. Its wide aperture of f/1.8 makes it a versatile lens for low light situations and for achieving a shallow depth of field. Additionally, the 85mm focal length can also be used for astrophotography, as it allows for capturing detailed shots of the night sky and celestial objects. However, it's important to note that using an 85mm lens for astrophotography may require additional equipment such as a sturdy tripod and possibly a tracking mount to compensate for the Earth's rotation. **

The Canon EF-S 18-55mm f/3.5-5.6 IS II can be used as a replacement for the EF-S 17-85mm f/4-5.6 IS USM, but there are some differences to consider. The EF-S 18-55mm has a slightly shorter focal length range and a smaller maximum aperture, which may affect its performance in low light conditions and its ability to create a shallow depth of field. However, it is a more compact and lightweight option, making it a good choice for travel or everyday use. Ultimately, the decision to use the EF-S 18-55mm as a replacement will depend on your specific photography needs and preferences. **