I'm interested in the Nikkor Z 20mm f/1.8 S lens. Navigate to its review on OpticalLimits.com. What is the overall rating and recommendation for this lens? Based on the review's conclusion, what are its two main strengths and its primary weakness?
Navigate to 'https://opticallimits.com'. Click the 'Menu button'. Click the 'Reviews' link. Locate and click on the 'Nikkor Z 20mm f/1.8 S Review' link. Scroll down to the 'Verdict' or 'Conclusion' section. Identify the overall rating and recommendation for the lens. Extract two main strengths and one primary weakness of the lens as stated in the conclusion. Synthesize this information into a concise answer.
The agent successfully navigates to the 'Nikkor Z 20mm f/1.8 S Review' page. The agent states the overall rating as '8.5'. The agent states the overall recommendation as 'Highly Recommended'. The agent identifies two main strengths, such as 'outstanding center quality at f/1.8', 'impressively sharp borders', 'very usable corners for astrophotography', 'well-controlled CAs', 'high quality of the bokeh', or 'very high build quality'. The agent identifies the primary weakness as 'very high vignetting in RAW images at large-aperture settings'.