Nikon Mount- Sigma 105mm f2.8 Macro lens increases Fstop in Aperture Priority

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DSubhash
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Nikon Mount- Sigma 105mm f2.8 Macro lens increases Fstop in Aperture Priority
3 weeks ago

Dear All,

I have received the Sigma 150mm f/2.8 EX DG OS HSM Lens today. When i had set my Nikon D5200 in Aperture Priority, it is not going to F2.8 and it stops at F3.5. It never went to F2.8.

When i spoke to online retailer they said its the normal behavior for Macro lenses on Nikon mounts.

Can someone please tell me whether this is normal on my Nikon D5200 or the lens are faulty?

All other lens work perfect on my Nikon D5200.

Awaiting reply.

Thanks.

Subhash

 DSubhash's gear list:DSubhash's gear list
Nikon D5200 Nikon AF-S Nikkor 70-300mm f/4.5-5.6G VR Sigma 17-50mm F2.8 EX DC OS HSM Sigma 105mm F2.8 EX DG OS HSM Nikon AF-S Nikkor 50mm f/1.8G
Nikon D5200 Sigma 105mm F2.8 EX DG OS HSM
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