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Lenses on mirrorless body need Focus calibration ?

Started 3 months ago | Discussions thread
Alastair Norcross
Alastair Norcross Veteran Member • Posts: 9,874
Re: Lenses on mirrorless body need Focus calibration ?

Photato wrote:

davel33 wrote:

Thats one of big selling points of the R system I would send it in for exchange for the RF100-400. The focus is faster and dead on every time. I had both the tamron and Sigma 100-400 and was never really happy with the focus. RF 100-400 is dead on every time.

Best of luck.

I already ordered the RF 100-400 and yes, it nails the focus every time. Its only issue is the 1EV darker apertures, compared to the Sigma.

It's actually only a 1/3-2/3 stop difference, depending on the focal length. At 100, Sigma is F5, Canon F5.6. At 400 Sigma is F6.3, Canon F8.

Almost certain I am keeping the Canon and returning the Sigma but wanted some confirmation before doing so.

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Alastair
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