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Sigma 2x EX DG APO Teleconverter for Sony AF
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- Front & Rear Lens Caps
- Soft case
- Multi-layer coating reduces ghost & flaring
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Style Name: Minolta and Sony HSM Mount Lenses
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The 2x EX is placed in the same way and it allows the photographer to use the 70-200mm f/2.8 lens as a 140-400mm f/5.6 telephoto zoom lens, and the 300mm f/2.8 lens as a 600mm f/5.6 ultra telephoto lens.
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If you have a longish focal length lens of good quality and really need to double it, AND if like me you don't have the money to buy a long focal length prime, then this is a cheap enough option. AND it has the possibility of good-quality images. But it depends on your ability to focus well manually.
Oh, and I tend to use a small aperture - around f/18 or smaller - to maximise the chance that I'll have the subject in focus. That means I miss out on the lens/converter's 'sweet-spot' of f/5.6-f/8; and it means I use a high ISO to get a decent shutter speed for a moving object. The MkII's high-ISO performance isn't as good as I'd like it to be. And I don't find the MkII's manual focusing as great as it might be, when I compare it to the manual focus assist I get using my Fujifilm X100T (which unfortunately has a fixed 35mm-equiv lens, albeit a wonderful one.
Together with the Sigma 180mm and the MkII, it's damned big, and heeeeavy for a long field trip!
So...you pays your money and you takes your chance, realising that it's a sub-optimal solution. But if like me you're a pauper, what do you do otherwise?
Sigma 1.4 converter, giving me an increase of 3.4 and again a good sharp acceptable result . the camera was more than capable of
overcoming any light loss
However what I can say is that I bought this product to fit to my Sigma 150-500mm lens and indeed it does. A few photos later and I've managed a few clear images at full zoom (equivalent to 1000mm) when being handheld. Not really a fair test though. I haven't had chance to check the af function of the lens but the os worked fine and the Nikon d7100 does help.
It turned up 4 days after the order placed, well packaged and in good quality. A reasonably priced solution to getting some more range but check before buying lenses. I have a Sigma 70-300mm, which is a good quality lens and produces some excellent results but this doesn't fit. Alas if I'd have known then what I know now I'd have waited and bought the same zoom lens but with the apo prefix for about £30 more and saved myself the extra £130 I now have to pay to buy the more versatile product.
Ask yourself if you really need the extra range before buying. This is only a cheap option if you have the right lens already and with any product like this the only benefit is how good a photographer you are.
Converter fitted the camera and my Sigma 150-500mm lens perfectly.
I knew about the loss of auto focus so this was no suprise. However getting a sharp focus is rather tricky manually. In addition the loss of light gathering ability is considerable but again to be expected.
Does the job but I suspect it will only be used for the odd shot ideally in good light conditions.
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