B+W or Leica IR filter for CV 28/3.5?

[johnastovall]

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I'm going to get a CV 28/3.5 while the getting is good.

 

I'm thinking about which filter. Until now I've used only B+W (I do plan to get Leica for my CV 15 and 12 and Milich adapter with hoods) But just not sure about which for this guy. Even with Coding will it matter that much?

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[Hacker]

For 35mm FLs and below, the general consensus is to use Leica filters.

[Maggie_O]

I'm thinking about this lens and I'll definitely get a Milich adapter and a Leica filter for it.

 

Though I'll probably go with the 28mm Ultron, kitted out in the same fashion.

[TEBnewyork]

Maggie,

There is a new Type II adapter from Voigtlander that John Milich can still mill the indents to code. Check out the Cameraquest site.

[Maggie_O]

I'll check it out. Does the math work, so it's cheaper to do that instead of just ordering one from John?

[TEBnewyork]

Yes, I believe it does and frankly I like having the dot to match up a little better than the indent. I don't have the new adapters but assume the rest of the cosmetics are the same. I bought a few lenses from Photo Village and have called a couple of times but they don't have them in.

[Maggie_O]

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Yeah, the dot is a big plus. That indent is damn hard to see, especially since I shoot without my reading glasses.

 

Another plus is you get an end cap with the CV adapter.

[sean_reid]

I'm going to get a CV 28/3.5 while the getting is good.

 

I'm thinking about which filter. Until now I've used only B+W (I do plan to get Leica for my CV 15 and 12 and Milich adapter with hoods) But just not sure about which for this guy. Even with Coding will it matter that much?

 

Hi John,

 

You're fine either way. See my "Beating the Blues" article. 28 mm and longer lenses can do well with either filter and sometimes (for 28 mm and longer lenses under some lighting conditions) the 486 filters actually match the M8 in-camera corrections *better* than the Leica filters.

 

For 24 mm and wider lenses, I recommend the Leica filters.

 

Cheers,

 

Sean

[sean_reid]

For 35mm FLs and below, the general consensus is to use Leica filters.

 

I'm not sure why you feel this is the consensus and wonder if two different things are being confused. 35 mm and wider lenses (with IR-cut filters) will show cyan drift in M8 files and so need to be corrected in-camera (using coded lenses) or with Cornerfix.

 

When using 24 mm and wider lenses, the M8's in-camera corrections tend to be better matched to the Leica filters (rather than the 486s).

 

Here's an overall guide, in case its useful. It's all based on extensive testing I've done over the past year.

 

12 mm - best uncoded, Leica or 486 filter, cyan drift corrected with Cornerfix

15 - 24 mm - if coded, Leica filter is preferable; if not coded, either filter will work with Cornerfix for correction of cyan drift

28 - 35 mm - Leica or 486 filter, coded or correct for cyan drift with Cornerfix

50 mm and longer - Leica or 486 filter, coding optional, Cornerfix not really needed

 

Naturally, Cornerfix is self-adjusting so the Heliopan filters are also an option if one is correcting with that program.

 

Cheers,

 

Sean

[chris_tribble]

A recent experience with B+W filters on the 28 apo and 75 lux is that in difficult light the LEICA filters are way better. I was shooting in a military academy in Sri Lanka with students wearing all black uniforms. Neon light inside + blue light filtering plastic on the windows and strong sunlight outside - absolute killer lighting for colour work anyway. With the B+W filter on both lenses there were horrid magenta casts on black plastic furniture and the uniforms when you were close to the window. Less of a problem when the lighting was single source. No discernible problem when I swapped the Leica filter onto the 75 (I had the 21 2.8 with me that I wasn't using). Examples attached... NB - The cast wasn't there all the time - it was when the really weird mix happened.