K7 & KX picture comparision take 2 (RAW & Jpegs available for download)

roy4core · 10-28-2009, 11:24 PM

Originally posted by jerrymouse

Custom menu 1, 3rd option, switch it to "2 - On".

Thank you Jerrymouse

UnknownVT · 10-29-2009, 10:02 AM

Originally posted by Daemos

I think I'm going to go 50mm at f/8
It seems the sweet spot of the lens is f/5.6 (according to the charts on the review) I wonder why MTF does a f/4

I think what you've done so far (both sets) have been just fine -
I found I could find something interesting in both sets -
it may not be perfect for everyone -
but then what is perfect - and is it actually attainable/possible for everyone?

Only do more tests if you want to see more -
ie: if you are not satisfied with the results so far,
and not due to peer pressure.

I think f/8 is a fine idea - as that would give good depth of field so more objects would be in focus and it is close to the sweet spot.

I think you should always go with reputable tests of lenses -
I too am a bit surprised at the MTF result of f/4.

Most lenses seem to be optimal between f/5.6 and f/8 -
but that is merely my impression.

Alfisti · 10-29-2009, 10:14 AM

What this shows is the dirty little secret no one wants to admit. You can **** around with jpg settings, LR settings, NR settings and christ knows what else until you get caluses from the measurbation.

Truth is, expensive lens/cheap lens .... expensive camera/cheap camera .... you have to NAIL the focus. IMHO the Kx is not focussed correctly and this has a much larger impact than anythign else we could do as photographers.

Daemos · 10-29-2009, 10:37 AM

Originally posted by Alfisti

What this shows is the dirty little secret no one wants to admit. You can **** around with jpg settings, LR settings, NR settings and christ knows what else until you get caluses from the measurbation.

Truth is, expensive lens/cheap lens .... expensive camera/cheap camera .... you have to NAIL the focus. IMHO the Kx is not focussed correctly and this has a much larger impact than anythign else we could do as photographers.

Kx was focused correctly.

What i'm wondering if this was a faulty Kx.

This is quite an arrogant statement. esp when you have contributed NOTHING to help.

Alfisti · 10-29-2009, 10:58 AM

I am no thaving a dig at you, I am REALLY struggling with my 20D, sometimes images are super sharp and other times soft as wet pastry. Shuter speeds are fine, ISO fine, aperture ia fine and exposure is fine .... but the image is soft. Next image is sharp.

I don't trust cameras at all regarding focus.

Daemos · 10-29-2009, 11:13 PM

I went out today, and went to another store:

Version 3 of my comparision of the K7 vs the KX with download links. I hope this will make everyone happy now =D

https://www.pentaxforums.com/forums/pentax-dslr-discussion/78098-k7-vs-kx-pic...available.html

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10-28-2009, 11:24 PM	#61
roy4core New Member Join Date: Apr 2009 Location: Amsterdam Photos: Gallery Posts: 19	Originally posted by jerrymouse Custom menu 1, 3rd option, switch it to "2 - On". Thank you Jerrymouse

10-29-2009, 10:02 AM	#62
UnknownVT Veteran Member Join Date: Sep 2007 Location: USA Posts: 1,812	Originally posted by Daemos I think I'm going to go 50mm at f/8 It seems the sweet spot of the lens is f/5.6 (according to the charts on the review) I wonder why MTF does a f/4 I think what you've done so far (both sets) have been just fine - I found I could find something interesting in both sets - it may not be perfect for everyone - but then what is perfect - and is it actually attainable/possible for everyone? Only do more tests if you want to see more - ie: if you are not satisfied with the results so far, and not due to peer pressure. I think f/8 is a fine idea - as that would give good depth of field so more objects would be in focus and it is close to the sweet spot. I think you should always go with reputable tests of lenses - I too am a bit surprised at the MTF result of f/4. Most lenses seem to be optimal between f/5.6 and f/8 - but that is merely my impression.

10-29-2009, 10:14 AM	#63
Alfisti Veteran Member Join Date: Mar 2007 Location: Toronto (for now) Posts: 1,748	What this shows is the dirty little secret no one wants to admit. You can **** around with jpg settings, LR settings, NR settings and christ knows what else until you get caluses from the measurbation. Truth is, expensive lens/cheap lens .... expensive camera/cheap camera .... you have to NAIL the focus. IMHO the Kx is not focussed correctly and this has a much larger impact than anythign else we could do as photographers.

10-29-2009, 10:37 AM	#64
Daemos Senior Member Join Date: Mar 2009 Posts: 106 Original Poster	Originally posted by Alfisti What this shows is the dirty little secret no one wants to admit. You can **** around with jpg settings, LR settings, NR settings and christ knows what else until you get caluses from the measurbation. Truth is, expensive lens/cheap lens .... expensive camera/cheap camera .... you have to NAIL the focus. IMHO the Kx is not focussed correctly and this has a much larger impact than anythign else we could do as photographers. Kx was focused correctly. What i'm wondering if this was a faulty Kx. This is quite an arrogant statement. esp when you have contributed NOTHING to help.

10-29-2009, 10:58 AM	#65
Alfisti Veteran Member Join Date: Mar 2007 Location: Toronto (for now) Posts: 1,748	I am no thaving a dig at you, I am REALLY struggling with my 20D, sometimes images are super sharp and other times soft as wet pastry. Shuter speeds are fine, ISO fine, aperture ia fine and exposure is fine .... but the image is soft. Next image is sharp. I don't trust cameras at all regarding focus.

10-29-2009, 11:13 PM	#66
Daemos Senior Member Join Date: Mar 2009 Posts: 106 Original Poster	I went out today, and went to another store: Version 3 of my comparision of the K7 vs the KX with download links. I hope this will make everyone happy now =D https://www.pentaxforums.com/forums/pentax-dslr-discussion/78098-k7-vs-kx-pic...available.html