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Forum: Pentax SLR Lens Discussion
01-20-2014, 12:14 PM
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Thank you. I will join soon.
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Forum: Pentax SLR Lens Discussion
01-20-2014, 10:57 AM
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I don't understand PF's review. My short using of DA20-40 says that it's the one of the best zoom Pentax ever made.
The sharpness as the best prime lenses. I think you need to test focus of PF's copy and retest lens in RAW.
I can confirm AF problems even with K-5IIs. It's suprise for me.
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Forum: Pentax SLR Lens Discussion
01-20-2014, 05:18 AM
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Forum: Pentax SLR Lens Discussion
01-20-2014, 05:06 AM
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I've got mine DA20-40 and I can say that this lens is the sharpest lens which I have.
It's sharper than ALL DA limited at my K-5IIs. It's sharp as FA43 and has better corner sharpness.
BUT....I have AF problems with this lens at the infinity at my K-5IIs.
All my lenses (even old lenses) have superb AF.
DA20-40 has front focus. No sharp photos at the infinity.
But at the close and middle distance - it's outstanding.
The lens is sharp at the center wide opened at ALL focal length. The corners are sharp from f4.5 at ALL focal range.
It's razor sharp lens.
I think that we need to ask Ricoh to make new firmware for old cameras to work with DA20-40 properly.
I've put +2 now and will keep testing my lens. When AF is on, it has outstanding sharpness.
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Forum: Pentax SLR Lens Discussion
01-07-2014, 10:21 AM
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I think that no RAW tests are the biggest mistake.
The tests in default JPEG of K-3 say not too much about resolution and sharpness.
I've converted some RAWs from DA20-40 in DXO and I'would say that DA20-40 is not worse DA40 or DA21.
DA40 has soft corners till f6.3-8 at K-5IIs. DA21 is the same.
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