Since Sony a7C II is compact mirrorless camera, so you'd better to get compact lenses, I highly recommended the FE 16-25mm f/2.8 G, FE 20-70mm f/4 G and Tamron 70-180mm f/2.8.

Here are some recommended lenses for Sony a7CII:

• Best Standard zoom lens: FE 24-70mm f/2.8 GM II
• Best Wide-angle zoom lens: FE 16-35mm f/2.8 GM II
• Best Portrait lens: Sigma FE 85mm f/1.4 DG DN Art
• Best Telephone zoom lens: Sony FE 70-200mm f/4 Macro G OSS II
• Best Wide-angle prime lens: Sony FE 20mm f/1.8 G

The new lightweight FE 85mm f/1.4 GM II is another great choice for a7CII, if you want to shooting high quality portraits.

Versatile Zoom Lenses:
The Tamron 28-75mm f/2.8 G2 offers outstanding value with excellent image quality, fast aperture, and weather sealing in a relatively compact package. Sony's own 24-70mm f/2.8 GM II delivers exceptional optical performance but at a premium price and larger size.

Compact Prime Lenses:
Since the a7C II prioritizes portability, consider Sony's compact primes: the 35mm f/1.8, 40mm f/2.5 G, and 50mm f/2.5 G are all excellent companions that maintain the system's small footprint while delivering great image quality.

Travel Zoom:
The Tamron 28-200mm f/2.8-5.6 provides incredible versatility in a single lens that balances well on the a7C II, perfect for one-lens travel setups.

Ultra-Wide:
The Sony 16-35mm f/4 offers excellent wide-angle performance in a reasonably sized package, while Tamron's 17-28mm f/2.8 provides a faster aperture at similar size and lower cost.

Portrait:
The Sony 85mm f/1.8 delivers beautiful portraits without the bulk or cost of the GM version, perfectly complementing the a7C II's compact design.

The Sony FE 20-70mm f/4 G lens is a great compact standard zoom lens for a7CII. Only half price of FE 24-70mm f/2.8 GM II.

Bump - same question here

I use Sony FE 40mm f/2.5 G Lens a compact travel lens. lightweight.

Regarding what #23 said about "Versatile Zoom Lenses:The Tamron 28-75mm f/2.8 G2 offers" a solid balance, I totally agree that sticking to something reliable is the way to go. I've been through a few different kits over the years and I've finally reached a point where I'm satisfied with a more conservative, simplified setup. My current setup works well and honestly, I don't miss the extra weight of my old lenses at all. I learned that for me, reliability and just knowing the gear wont fail is worth more than having every possible focal length. I'm much happier now that I'm not constantly swapping glass in the field. It's been a solid experience tho, and I havent had a single issue with the autofocus missing shots. Keeping it simple was definitely the right move for my back and my peace of mind...

If you need a super telephoto option, the Sony FE 100-400mm f/4.5-5.6 GM OSS is a top performer for wildlife and sports photography. It's sharp, well-built and has effective image stabilization.

New Sigma 24-70mm f/2.8 DG DN II Art lens is also recommended!

Small but mighty: Sony's G prime lenses (24mm f2.8G, 40mm f2.5G) paired with the A7CII create an incredibly portable setup. These pocket-friendly lenses deliver excellent image quality and feature useful manual aperture rings. Perfect for photographers who want pro-level gear in a compact package.

Here are the top lens recommendations for the Sony a7C II:

Versatile Zooms:

• Sony FE 24-70mm f/2.8 GM II: Premium all-purpose zoom with fast aperture
• Sony FE 20-70mm f/4 G: Compact travel-friendly option
• Tamron 28-75mm f/2.8 Di III VXD G2: Affordable f/2.8 alternative

Prime Lenses:

• Sony FE 35mm f/1.4 GM: Excellent for street and portraits
• Sony FE 50mm f/1.4 GM: Perfect for portrait and low-light
• Sony FE 20mm f/1.8 G: Wide-angle for landscapes

Wide & Telephoto:

• Sony FE 16-35mm f/2.8 GM II: Premium landscape lens
• Sony FE 70-200mm f/2.8 GM OSS II: Professional telephoto zoom

Choose based on your photography needs and budget.

For Travel lens for Sony a7C II, you can read this post.

Posted by: @6777777

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Since Sony a7C II is compact mirrorless camera, so you'd better to get a compact lens, I highly recommended the FE 16-25mm f/2.8 G and FE 20-70mm f/4 G.

Yes, I would also suggest these two lenses for compact a7C II.