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MC-21 Sigma SA to L mount

Started Jun 6, 2021 | Questions thread
Ceistinne
Ceistinne Veteran Member • Posts: 3,256
Re: MC-21 Sigma SA to L mount
1

George1958 wrote:

Hi, I am considering buying a Sigma FP but I am torn between this and a Sigma Quattro H. I have an SD15 and the 18-35 F1.8 Art and the 50-100 F1.8 Art.

These I understand would be fine on the Quattro. However I go down the FP road and use the MC-21, will I get vignetting or experience cropping of the FP sensor given my lenses are APSC?

I can't really justify the expense of buying new L Mount lenses at this time.

My thanks in anticipation

George

George,

If you use APS-C lenses on a full frame camera you will definitely get vignetting. If the camera can detect APS-C it will auto switch to the APS-C crop size if the camera has that feature or you could change the setting to APS-C by way of a switch or in the menu, again if the camera has that feature. Most of them do. I do not know whether the fp or fp L has. Have a look at the User Manual on the Sigma website for information on that.

The lenses you reference above will be ok on the sd Quattro H, the 18-35mm may vignette slightly up to 19 or 20mm  but will be ok up to 35mm.

S

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