Ive been shooting with Sony APS-C for like five years now, started with an old a6000 and finally upgraded to the a6700 a few months back. I thought I had my kit sorted but I'm actually freaking out a bit because Ive got this big trip to Japan coming up in three weeks and I realized my prime lens setup is gonna be a total nightmare for walking 10 miles a day. I usually stick to my Sigma 16mm and 30mm but swapping glass in the middle of a busy street in Tokyo sounds like a recipe for sensor dust or just missing the shot entirely.
I need something that can handle everything from tight street scenes to maybe some landscape shots in Kyoto. My budget is around $800-900 max, which is stretching it a bit after buying the body. I was looking at the Sony 18-135mm because its light but then people say the Tamron 17-70mm f2.8 is the way to go for the constant aperture but man that thing looks huge and Im worried about the weight on my neck all day. Then theres the 18-50 Sigma which is tiny but maybe not enough reach? I'm honestly lost and the departure date is getting closer and I just cant decide if I should prioritize the reach or the low light performance for the night markets. What do you guys think is the absolute best do-it-all lens for the a6700 when you only want to carry one piece of glass?
Regarding what #2 said about "Saw this and had to jump in! Like..." - that Tamron reach is nice but in my experience weight matters when youre walking miles.
Seriously, just grab the Sigma 18-50mm f/2.8 DC DN Contemporary! Its so tiny and amazing for travel, you will love how light it feels while walking Japan! Trust me, it rules!
Saw this and had to jump in! Like someone mentioned, the Sigma is tiny, but for Japan you really want the extra reach. You should grab the Tamron 17-70mm f/2.8 Di III-A VC RXD. It offers a constant f2.8 for night street photography and the VC stabilization pairs perfectly with the a6700 sensor. Its the best balance of range and speed. TL;DR: Tamron 17-70mm f2.8 is the ultimate one-lens solution for reach and low light performance.
Honestly, I've been quite satisfied with the a6700 for travel, but you really gotta watch out for the technical trade-offs when you're walking miles. I once did a two-week stint with a heavy zoom and my wrist was basically shot by day four.