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I received the above mentioned lens in January as part of late Christmas bundle. Since acquiring it I have noted that when the lens is working at it full focal length my images are not as sharp as they could be. This is the same case even when mounted on a sturdy tripod.
By screwing back the focal length to around 480mm the quality of my images has improved quite dramatically.
What I would like to know is, for those of you out there who have the afore mentioned lens "Are you or did you experience the same problem?"
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Have not got this lens but know 2 people who have it, and they have had a lot trouble with it.!!
exactly the same Nathan. and to make matters worse it often looks sharper on the back of my camera than when i download them.
like you i am only happy just past 400 mm and with at least f9. i also think they are a bit hit and miss on focus accuracy when used at full 500 mm. that said i have had very good results as well as bad results
as a matter of interest my friend has the 400 mm version sigma zoom and it is also soft at full extent. ok for dreamy portraits but not as good for birds of a feather.
Quote: 'Quote' exactly the same Nathan. and to make matters worse it often looks sharper on the back of my camera than when i download them,
They always will as there as been some degree of in camera sharpening applied to the jpeg file.
I do not have the lens now Nathan but when I did I experienced the very same, stop down to F8 and you will see an even greater improvement, light permitting of course.
Used properly as mentioned there are great images to be had with this great lens.
Some very interesting and very welcomed feedback, which when you consider the price of the blooming thing you would expect better.
Once I have enough evidence to satisfy my thirst for revenge I am going to contact Sigma to see what they say about the lens. Personally I feel that I have been robbed. The Sigmas specialist in my eyes was speaking crap, wish I had forked out more for the Canon equivalent.
"I know hindsight is a wonderful thing?"
Thanks once again
Only found this now, yes Nathan I had the same lens, Nikon edition and sold it fast, well as fast as I could. bought it from Jessops, tested it before buying, got another one fresh from the box and it was very annoying tried everything, had horrible CA in each and every shot.
And no, it isn't me or my technique, I bought a MF Nikon 500 f4 after that and never had those problems. And this is a much heavier lens...
But then there are others who were lucky.
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