Using Aperture to remove purple tint, anyone?

[Cranialpush]

Hi All,

Just been using the M8 with the new Tri-Elmar and got some nice shots, however blue/bluey-black seems to have a severe purple tint? In fact the whole picture does. Now although I accept I didn't have a correction filter on the lens I never thought it would be this bad.

Can anyone tell me how best to correct the colour in Aperture, or if necessary CS3?

Thanks,

CS.

{Example attached: t-shirts should be dark blue, charcoal black, charcoal black}
{PS: True blacks come out fine}

 

[bottley1]

You need the IR cut filter, then problem will be solved! Any reason why you don't want to use it?

 

[Cranialpush]

You need the IR cut filter, then problem will be solved! Any reason why you don't want to use it?

Not a case of not wanting to use it, only one of my lenses is encoded (the new Tri-Elmar) and am ordering a custom fit filter for that from John Milich.

Am I correct in understanding I can't use the filter without an encoded lens? That's the way I understood the manual and menu settings?

Thanks,

CS.

 

[Gabriel M.A.]

Am I correct in understanding I can't use the filter without an encoded lens? That's the way I understood the manual and menu settings?

Ok, where to begin?

It is a 100% untruth that you need an encoded lens to use an UV/IR-cut filter.

It is also not true that you need encoded lenses at all to get rid of the infrared contamination most commonly encountered with synthetic fabrics (lots of shirts that say they're 100% cotton...my foot!). All you need to do is use correct color profiling using a color profile file that has been floating around since last year (read HERE)

Nuisance, yes. Camera defect? Hardly. Defective thinking in design? Probably.

Also, judging by how "purple" those shirts in your sample are, I'm guessing you don't have the latest firmware update; they've greatly improved the color sensor response to IR-affected black-dyed synthetic fabrics.

Leica's latest M8 firmware (1.107) can be found HERE

 

[Cranialpush]

It is a 100% untruth that you need an encoded lens to use an UV/IR-cut filter.

Really!? .. and there they were say in a box waiting for an encoded lens as well, towards the end of the evening I'd switched to a Summicron-35 that could have benefited.

It is also not true that you need encoded lenses at all to get rid of the infrared contamination most commonly encountered with synthetic fabrics (lots of shirts that say they're 100% cotton...my foot!). All you need to do is use correct color profiling using a color profile file that has been floating around since last year (read HERE)

Great link, and excellent reading, I've emailed Edmund and will look at trialing C1 for initial processing.

Also, judging by how "purple" those shirts in your sample are, I'm guessing you don't have the latest firmware update; they've greatly improved the color sensor response to IR-affected black-dyed synthetic fabrics.

In fact I am using 1.107, it must just have been a lot of cheap clothing being worn!

Many thanks, that was most informative and helpful!

😎