Sigma QX 28mm f 2.8

[56 DIN]

bought a Sigma 28mm 2.8, XQ - because i never found anything in the net about it and now i understand why



CA starter set



interesting bokeh


on Pentax K20d, RAW resized, not sharpened

[Scheimpflug]

[Attila]

Thank you for sharing , most Sigma manual lens is crap as we can see here too. There is some exception mostly in tele-range.

[ManualFocus-G]

Have you tried shooting to infinity with it? Just wonder what the corners are like at f5.6-f11. That is, after all, what this lens was designed for, one should imagine

It certainly has some interesting bokeh though, and when the images are clicked on, they look reasonable. The purple fringing is to be expected with that sort of harsh lighting and a cheapie lens

[56 DIN]

here is the lens:


stop down pin

[56 DIN]

and here are shots with infinity
sun in the back

f8


f22


sun from the side
f 5.6 or 8


it was the same point, just 180 degree turn same conditions - out of cam, only resized.

[ManualFocus-G]

Many thanks for the samples! Difficult to tell from the small size of the pictures, but it looks pretty crap at infinity to me, what do you think?

[Attila]

[martyn_bannister]

Personally it seems to me to be best on close focus work. Might be worth trying all the stops at close range before making that doorstop! Other than that it seems to be a pretty good candidate for "worst lens" status

[walter g]

[Excalibur]

[Attila]

[Scheimpflug]

[56 DIN]

anybody interested ?

need suggestions how to declare it when i send it back to the bay....

...or should i donate it to Mflenses for creating a challenge cup ?