Sigma 17-70 or Pentax 16-45?

Started Oct 10, 2006 | Discussions thread
Hythloday Senior Member • Posts: 2,032
Colour rendition Pentax K100D vs Canon 300D

I own two Sigma 17-70mm f2.8-4.5 DC Macro lenses, viz. one for my Canon 300D and one for my Pentax K100D. This afternoon I took a picture of my house to see if the cameras would take exactly the same images. The lenses are the same and the bodies are different. Both cameras were in P mode and I used Photoshop Elements 5.0 to process the raw files. I let the program choose the settings:

Here is the Pentax image:

Here is the Canon image:

The time of the Canon image was 16:52.26, the time I took the Pentax image was 16:55:23.

KL Matt wrote:
Hi Gordon,

Another big difference with the DA16-45
is the what I consider exceptional colour rendition - seems to be a
common trait of the better Pentax lenses.

Yep, that would be the reason to choose the 16-45 over the 17-70.
Other than color (I really like the 16-45), the 17-70 (I don't like
this lens' color rendering, it seems very warm and odd) seems to be
the equal or better of the Pentax lens. But everyone literally sees
color differently.

I don't think it's all that straightforward to post process a 17-70
image so that the colors look like it came from a 16-45. If someone
figures out a way, then great, my problem is solved, but I
seriously doubt a simple WB adjustment will really give the same
results. Someone proove me wrong!

Matt

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