A question re Tamron 28-200 and SS

Started 2 months ago | Discussions thread
Foto4x4 Veteran Member • Posts: 3,234
Re: A question re Tamron 28-200 and SS

That’s a pretty safe recommendation on your A7III with its IBIS on but it would depend on the focal length. Usual rule of thumb for a non-IBIS body would be to shoot 1/x where x equals nearest to your chosen focal length. For example, at 28mm, shoot 1/30s or at 200mm, shoot 1/200s. But with IBIS you could likely use half those shutter speeds or even slower.

But of course you also have to consider subject. If it’s stationary, those are okay but if it’s moving you need faster speeds and for a bird say, you need maybe 1/1000s or even twice that. That’s where aperture and ISO speed come into play. There is no one size fits all.

Finally, stabilisation becomes less important the faster your shutter speed and in some cases can interfere with getting a sharp image as it’s really designed to compensate for minor hand movements when trying to hold the camera still. When panning following a moving subject like a bird or car the stabilisation can actually be counter productive.

Hope that helps you.

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Cheers, John
Quote: “If your pictures aren’t good enough, you’re not close enough.”, Robert Capa

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