Saw this earlier but finally have a moment to weigh in properly. If you want a single lens that covers nearly everything without breaking the bank, look closely at the Nikon NIKKOR Z DX 18-140mm f/3.5-6.3 VR. It is significantly more versatile than the standard kit lens, especially for travel, because you get that extra reach without needing to swap glass in dusty park environments. I have been very satisfied with mine; it stays on my body 90 percent of the time because it is sharp enough for travel shots and long enough to track moving targets like your dogs from a respectful distance. Since you are budget-conscious, try to find a copy in good condition second-hand. It is a solid investment that keeps your kit lightweight, which is crucial for walking around Japan all day. Honestly, do not rush into buying a bag full of primes just yet. Learn the focal lengths this zoom provides first. Once you notice you are consistently shooting at one specific zoom level, like 35mm or 50mm, then you can justify buying a prime later. For now, this lens provides a very measured, professional approach to building your kit slowly. It works well, keeps your gear minimal, and lets you focus on learning composition instead of fussing with equipment. You will be much happier with the results if you master the basics with one reliable, flexible piece of glass.

In my experience, the kit lens is a decent starting point, but you will eventually hit a wall with low light. Before recommending a prime, do you know what focal length you use most often currently? For your needs, a used Nikon NIKKOR Z DX 50-250mm f/4.5-6.3 VR is a stellar budget pick for capturing active dogs from a distance. It offers significant reach compared to the kit glass without breaking the bank.

> Is there like one lens that does it all well enough for a beginner or should I just stick with the kit lens for now? Honestly, you should stick with the kit lens for a bit to learn the basics, but the real jump in quality for your specific needs will be the Nikon NIKKOR Z DX 50-250mm f/4.5-6.3 VR. It is an incredibly sharp telephoto zoom that works well for capturing dogs in motion at the park, provided you have decent daylight. I have been very satisfied with its Vibration Reduction performance, which is essential on the Z50 since it lacks internal stabilization. For your Japan trip, if you want something that stays on your camera for 90 percent of your travel shots, look at the Nikon NIKKOR Z DX 16-50mm f/3.5-6.3 VR. It is basically a pancake lens that makes your Z50 feel like a point-and-shoot but with way better image quality. The focal length is perfect for street scenes and landscapes. I am happy with how well it performs in low light for its size. Basically, don't rush into expensive glass yet. Master the 16-50mm for your travel wide-angle shots and grab the 50-250mm for the dogs. That two-lens setup covers everything without breaking the bank and keeps the gear light enough for long days of walking. You will find that these two lenses are more than capable of professional-looking results once you get comfortable with your settings.