The a6700 is Sony’s top of the line crop sensor camera and features a 26 MP back-illuminated sensor and more features that put it in the same category with some of their pro-level cameras. So it’s important to have the right lens to get the most out of this camera.
My pick as the best lens for the Sony a6700 is the Sigma 18-50mm f/2.8 DC DN Contemporary Lens because of its combination of versatility, image quality and wide f/1.8 aperture make it unique and an exceptional choice for crop sensor Sony users.
But keep reading for my full breakdown of that lens and more options that might be a better fit for your specific needs.
Photography Goals uses affiliate links. When you buy products through the links on our site, we may earn a commission.

1. Sigma 18-50mm f/2.8 DC DN | C
The Sigma 18-50mm f/2.8 DC DN | C lens is a great choice for Sony a6700 users due to its versatile focal length range, constant aperture, excellent optical performance, compactness, and affordability.
This lens is a standout and one that I would recommend for all of the Sony crop sensor cameras.
The 18-50mm focal range on a crop sensor camera gives you the full frame field of view of 27-75mm so you’re getting a very versatile and useful focal length.
It’s like the younger cousin of the beloved 24-70mm f/2.8 lens used by professionals but tailored for a more compact setup. With this lens, you can capture everything from vast landscapes to intimate portraits, all with professional-level image quality.
Sigma 18-50mm f/2.8 DC DN | C Specs
- Lens Mount: Sony E
- Format: APS-C
- Aperture Range: f/2.8 – f/22
- Minimum Focus Distance: 12.1-30cm / 4.8-11.9in.
- Filter Size: 55mm
- Lens Construction: 13 elements in 10 groups
- Diaphragm Blades: 7
- Stabilization: No
- Dimensions: 65.4 x74.5mm / 2.6in.×2.9in.
- Weight: 290g / 10.2oz
The constant f/2.8 aperture allows for excellent low light performance and a shallow depth of field, which is great for creating bokeh (background blur) in portraits and other subjects. This also opens up more potential for shooting in low light and is one of the major upgrades compared to some of the kit lenses that Sony packages with this camera.
This also means that you can get even better image quality and sharpness simply by stopping down a few stops. Even f/4 will significantly sharpen up even the very edges of the frame. So you can confidently use this for landscape photography as well.
While this lens doesn’t come with built-in stabilization to keep your shots steady, the Sony a6700 comes to the rescue with in body image stabilization (IBIS). So, even if your hands shake a little, your photos will be clear and sharp.
An overlooked feature is the close focus distance of just under a foot. This combined with a 50mm focal length at the long end means that you can even do some macro photography. It’s not the same as a dedicated macro lens, but it gets the job done in a pinch.
Overall, you’re getting a very high quality lens at an affordable price that can do everything except longer telephoto shots. For that, check out the Tamron 70-180 below.
But if you want an even bigger focal range and built in image stabilization, then check out this next lens…

2. Tamron 17-70mm F/2.8 Di III-A VC RXD
This lens covers a big zoom range and still delivers excellent image quality.
With a 17-70mm range (25.5-105mm full frame equivalent), it covers a wide to short-telephoto perspective meaning you can shoot just about anything with this lens.
In fact these top two picks could really be 1a and 1b because it really depends on whether you want the extra reach of the Tamron or the smaller and lighter Sigma, so I’ve done a little bit of comparison below.
Tamron 17-70mm F/2.8 Specs
- Lens Mount: Sony E
- Format: APS-C
- Aperture Range: f/2.8 – f/22
- Minimum Focus Distance: 19