CurtPalme.com Home Theater Forum

[stridsvognen]

[mp20748]

[redfox001]

I like the forest. Looks very real.

[mp20748]

[redfox001]

Ok and I bet it resolves very well when moving too. Nobody moves camera's so fast that the sharpness is invisible.

Or is it true that a G90 that does not resolve HD has no problem with movies because of the movement? That you can not see the difference in real movies?

Some of the guys that try to disprove the importance of the 1:1 say that is only a test picture. If they where consistent than they would say that lenses do not matter too because resolution of lenses is also measured with the 1:1 testpictures.

This image below shows what a lens does on the transition from black to white lines with low and high frequencies. The low frequency lines come through better than the high frequency lines.



From Kurt I understand that when this 1:1 behaves different for different colours the mess gets complete.

[Nashou66]

TSE's explanation. WTF is MTF ?

http://www.avsforum.com/forum/16-crt-projectors/633597-wtf-mtf.html

[redfox001]

Thanks nice. They talk about lenses but also about focus. I tried to maximise the 1:1 on my Cine max but there was little change with focus other than the lines becoming invisible. So the bandwidth limit is much worse than the focus limit

The lenses seem to be capable of resolving much higher resolutions except at the corners. With My Cine max again the corners are the same as the center so the lenses resolve much more than the bandwidth. Is it not a shame such good lenses and focus with such bad bandwidth Makes no sense.

[jbmeyer13]

[redfox001]

I do see almost the same MTF vallues in the corners as in the middle. Now if the lens was beyond its resolution in the corner the MTF should become worse there. I do have a little less astig in the corners that makes the lines less clear distinguishable.
Looking at this picture one could argue that the MTF in the corners is a little worse as the grey is a little darker. So perhaps the electronic focus or the lens is not optimal there as the bandwidth must be the same in the corners.

I will compare with GT17 when I come to it.

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[stridsvognen]

Are you sure you dont have some scaling on that SMPTE pattern.? It not very often to see the 2:2 role off that much, and the 3:3 also role off.

[redfox001]

HD test blu ray on Oppo bdp 83. This is same pic close up. Might be a little better with green only.
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[stridsvognen]

[redfox001]

I think the streaking is the reflection problem that I mentioned earlier. The sides are mirrored to the other side looks like streaking in the middle but I do not know where exactly you see streaking, it is a symetric picture so something in the up corner can come from a down corner. I still did not solve it but I am sure it is not the coating on the lenses. Perhaps the coating on the c-element but than all three or the mixture of the glycol. I am not putting more effort in it at this time.

But the bandwidth is the same as allways and each time you say the same about the 2:2. At least the last times. When you see pictures with only green they look better. I do have peaking on lowest setting.

[redfox001]

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[jbmeyer13]

There's already a 1:1 909 screen shot thread, no need to post that here;-)

[redfox001]

[redfox001]

[mp20748]

A few shots from the Darkmen Blu ray

[mp20748]

More Darkmen that for the first time I'm able to capture some of the deep black in this movie

[Nashou66]

Mike are those tubes worn on the edges ? The yellowing look like its form that or improper zone contrast settings.


Nashou