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I'm selling my Sigma 400mm 5.6 APO Multi coated lens. I bought this lens second hand on Ebay to photograph Red Kites and have been impressed with the results I've got, but would now like to save up for a 150-500mm Sigma with autofocus.

It comes with no box, but with front and rear caps and a 72mm Hama UV filter. The lens has a built in hood. It has no dust or fungus and no scratches to the glass, there is a small 7mm scratch on the tripod mount near the APO logo.

The lens says around the hood "SIGMA TELEPHOTO-400mm 1:5.6-Multi-coated-Lens made in Japan- o72. The serial number is 1013561. I've supplied this information because I bought it secondhand and I have no box or instructions.

I paid just short of £200 + postage for this lens and it had no filter. So Paypal fees paid by me, postage paid by me, asking price £200










Here as some images I've taken with the lens on my K30
This image is as original only cropped, no PP-taken handheld




This image is uncropped but adjusted in Lightroom-taken handheld




This image is part of sharpness test I did, on a tripod, F22 iso 100 at 4metres-cropped and rotated but unadjusted

I'm sure it does fall into catagory "not that hot" when compared to other lenses, but I've been impressed with it, I did a sharpness test with a box of swan vestas and was blown away how sharp it was at 4 metres. And then I went out and about with it and caught a smashing shot of a Red Kite. What do you think of the IQ after looking a these pics?

My lens is so old it's manual focus already, no AF on it. I'll take your combined advice and have a look out for a 1.4 x converter or maybe stay away altogether and dream of a 150-500mm lens

Thanks for the tips. I find that my 400mm is sharper around f11 but would that be bumped up as well, would I be looking at f22 to get same level of sharpness?

I've only seen a Sigma 1.4x converter, are there other ones that a more reasonably priced?

Hi Folks,

I'd like a little (simple) explanation about tele-converters please. I have a 400mm Sigma APO MC and would like to enhance it's capabilities, what can I expect from a tele-converter, is there a sacrifice in IQ, what's the difference between say a sigma x2 and a old pentax x2???

I would appreciate any help the forum can give.

Kindest Regards
Jason

There are currently 35 on ebay if you get no joy here

Is this lens still for sale?

Lens sold to Blincodave

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