子ども撮りにおすすめのソニーカメラ｜α6400・α7cII・α7IVを使って分かったこと

"Which camera is best for photographing kids?" — if you have children, you've probably wondered this at some point.

There are plenty of articles comparing specs, but this one is based on my hands-on experience. Having used the α6400 for about two years, then moved to full-frame with the α7C II, α7 IV, and RX1R III, I'll recommend cameras based on three different use cases.

Summary: Recommendations by Purpose

α6400 | The Best Starting Point

If you're just getting into photography, I recommend the α6400 series. The reason is simple: price.

Both the body and lenses are more affordable than full-frame, making it an accessible first camera. The grip is solid, and you'll get to experience Sony's acclaimed AF performance.

I used the α6400 for about two years before moving to full-frame. Honestly, for everyday photos of my kids, I rarely felt it was lacking. I upgraded because I wanted to push image quality further — not because the α6400 couldn't handle the scenes I was shooting.

One thing I want to be clear about: whether "APS-C is enough" is a question you should only answer after using full-frame. Choosing APS-C after knowing full-frame is a valid decision. But assuming APS-C is sufficient without ever comparing — that's just drawing a conclusion without the data.

For starting out with Sony, the α6400 series is the ideal entry point.

α7C II | Lightness Above All

If you're moving to full-frame, I recommend the α7C II. The main reason is its weight.

When I was using the α7 IV, the combined weight with a lens kept causing neck pain. The heavier a camera is, the less you want to take it out. There's a saying: "The best camera is the one you have with you" — and I really believe that.

After switching to the α7C II, I found myself taking it out much more casually. The grip is reasonably solid, and you still get full-frame image quality and AF performance.

If your main shooting scenarios involve carrying the camera around — daily life, travel, parks — the α7C II is probably the best fit.

α7 IV | For Professionals and Serious Shooters

If you're getting paid to shoot, I recommend the α7 IV.

The solid grip and dual card slots — which provide peace of mind in professional settings — are its biggest strengths. Being able to record to two cards simultaneously as a backup is an important consideration for paid work.

That said, the weight is a real drawback. Depending on the lens, extended sessions can put significant strain on your neck and shoulders. If everyday kid photography is your main use case, think carefully about whether the weight is worth it.

Summary

Specs-wise, all three are excellent. The real question is: what are you using it for?

• Just want to get started → α6400
• Want to carry it every day in full-frame quality → α7C II
• Professional use or serious shooting → α7 IV

All of these are available to try in person at Sony Store, which also offers trade-in services and purchase benefits. Check out the best ways to buy at Sony Store before you go.