Originally posted by Alizarine Here's my comparison shot... cropped @100%
K-x, IS0-100, 1/400s, f/8 both @70mm
image was downsized by Google so it's a bit pixelized
I think what you're seeing there is the effect of a higher T-stop (not F-stop) value for the second zoom - in other words, it underexposed just a tad, making the colors seem darker/richer.
This brings up a point, something that occured to me - I wonder if a lot of the Pentax 'color' difference people think they see can be attributed to pentax's tendancy to slightly underexpose compared to CaNikon. This is done on purpose, because IIRC it ties in to the way Pentax deals with noise (I think Falk started an interesting thread about that a couple years ago.)
This recent thread shows that a little bit: --->
Axl: Canon 50 1.4 vs DA* 55
That said, of course jpeg engines really do things differently between manuafcturers, so if you're shooting jpeg, you might see a distinctive look. And lenses do often bring a color shift, which can be dealt with in post, but often is there... Most of my Tamrons have had a very slight yellow cast, a few of my Takumars shoot cool... but my DA35ltd seems absolutely perfect, rich, vibrant but true colors.
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