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M9 and UV/IR filters


erlingmm

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I know. My question is if they can still be useful for lens protection, or degrade de M9 image.

 

With wideangle lenses and IR/UV-Filters you will get cyan-vignetting on the M9.

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realistically, erling - add that to the "9/9/9 questions" thread where someone has kindly volunteered to ask questions at the NY City demo 9/9.

 

The Leica video promoing 9/9 shows a flash of the (as we now know) M9 menus, and there is still a menu option for lens coding, so the M9 may (emphasize "may") be able to correct for IR filters even if they are not needed.

 

But - I would assume that any filter is likely to have some effect on image quality beyond the cyan-corners thing: flare, reflections etc. Best bet, if the M9 really doesn't need the filters, is get a nice $10 filter pouch and put the filters there when the lenses are on the M9.

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If Leica would be smart they would support the M9 again with the option "Lens Detection On + UV/IR" and then correcting the opposite direction. I don’t see a reason why this would not be possible or did i overlook something?

 

This would be great for those using their M8 as backup.

 

Best

Holger

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There is an IR filter on the sensor. There's talk that it's underneath the microlenses, which would mean that the light hitting the filter at the edges would no longer be so oblique. Thus, less cyan shift in the corners. I'm sure the M9 will use lens coding internally to reduce ordinary vignetting with wider lenses, and to eliminate any remaining cyan shift. How much there actually is remains to be seen. All someone has to do is take a couple of pictures of a white surface with the camera set to lens coding off and on (if available), and we'll know.

 

The major point is that you won't need external UV/IR filters with the M9. Using them would be redundant. And it would only duplicate the cyan shift we get with the M8, for which the M9 won't compensate. So take those IR filters off your lenses, and sell 'em to poor peasants like me who will stick with the M8 for at least the forseeable future. :)

 

Of course, for those of us who already have an M8 and UV/IR filters for our lenses, the cyan shift is basically a non-issue. The only time the filters cause trouble is with starkly backlit shots (flare), or those with bright light sources in the picture (reflections). The cost of buying a few filters and coding a few lenses is far less than the cost of selling the M8 at a loss and buying an M9.

 

I bought the M8 knowing full well what the IR issue entailed. So I got filters and coded my lenses of 35mm and wider. To me at least, the fact that Leica has solved the IR issue in a later model is not any reason to upgrade. Far more important are the fact that wide lenses will be as wide as they are on film, plus any image quality improvements they've been able to achieve. There's also the question of whether fast lens focus shift will be as much of an issue with the larger sensor. Time will tell.

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It would not be quite redundant. No filer blocks 100%. I find, n on well-filtered cameras, that adding a 486 filter improves the colours, if only slightly. These filters were on the market long before the M8 came out as "digital" filters, and not for nothing. The M9 won't be different. The only difference, as mentioned will be the danger of cyan drift on wideangle lenses.

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So, can the experts tell us- can I leave my UV/IR filters on the lenses when switching between the M8 and M9?

 

It sounds like you are saying yes from 50 mm to 90mm.

 

And are you saying no from 24mm to 35mm?

 

Thanks

 

If you don't mind setting up a profile in CornerFix for the M9 for lenses WITH UV/IR filters on them then you could conceivably keep filters on all lenses (assuming that there isn't a menu option in camera for exactly this scenario).

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If Leica would be smart they would support the M9 again with the option "Lens Detection On + UV/IR" and then correcting the opposite direction. I don’t see a reason why this would not be possible or did i overlook something?

 

This would be great for those using their M8 as backup.

 

That would certainly sweeten the deal to have an M8 as a backup.

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I agree with Holger: I hope there'll be an M9 setting for Lens Detection + UV/IR as an "M8 emulation mode," so that you can easily switch between M8 and M9.

 

Doug--Putting UV/IR Cut filters on a camera not designed for them will cause the cyan corners we get now when using the filters without telling the camera you're doing so.

 

The answer to your question is the same as the answer to whether there'll be a menu setting that allows us to continue using the filters. As Andy said, that's a question for the ninth.

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