IQ180 and 8x10 assessment

[timparkin]

I would love to have Tim incorporate significant movements into the equation to evalute lens performance in the corners; though it appears that none of the digital lenses chosen has that function.

I was thinking of doing just this. I thought the Digaron W's were the best lenses for movements on the digital platform? They seem to provide 90-125mm of movement (probably half a frame up or down). I can compare it directly with the 150 sironar S on the Ebony which has a similar amount of movement in relation to the sensor size

[pdmoylan]

Sorry Tim. I miscued on the digital lens movements. These are the best choice as you say.

An eager observer.

[John NYC]

Tim,

Any results?

John

[timparkin]

Tim,

Any results?

John

Yep! Just compiling stuff - two weeks to the full article

[Asher Kelman]

Yep! Just compiling stuff - two weeks to the full article

Any hints? Can LF stand it's own under the best of circumstances?

Asher

[timparkin]

Any hints? Can LF stand it's own under the best of circumstances?

Asher

OK - a little hint. Large format photographers won't be dissapointed ;-)

[Nathan Potter]

Hardly need to do the test. Most of us can guess the results. Under ideal conditions of absolute stability and focus with top lenses and the lenses not diffraction limited the 8X10 will exceed the IQ180 by some bit as far as resolution is concerned. For other factors such as color fidelity, color fringing and such the IQ180 may be superior. It's the practical issues of things like vibration, focusing ability, DOF and the like that will differentiate the two formats.

But actual tests are reassuring and illustrative, so Tim keep grinding away. Many of us appreciate your efforts.

Nate Potter, Austin TX.

[Ken Lee]

I recommend that this thread be closed, and that Tim create a new one when he's ready to share his findings. This one has gotten a bit... protracted.

[timparkin]

I recommend that this thread be closed, and that Tim create a new one when he's ready to share his findings. This one has gotten a bit... protracted.

A fine idea :-)