CV 15mm f4.5 on an M8

A

AceVentura1962

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Hello all,

I'm thinking of acquiring my second lens for the M8, the CV15. BC I use the M8, I'll need the newer M mount version rather than the LTM version so I can mount an IR Cut filter. I would also like to use a polarizer as well and also understand (thank you Jaap) that I'd need to mount it on top of the IRCut filter. There lies my dilemma.

How would I mount and actually use the polarizer this way? It's difficult enough to use a polarizer on a RF, but this seems especially so.

One solution I've seen is to use step up rings and mount a larger polarizer. This would also have the benefit of being able to seen through the filter from behing the camera and thus guage the level of polarization In theory this might work, especially since I have both a 58mm and a 77mm for use w my Canon gear. However, this CV has a built in lens hood that I think would block this type of arrangement.

The only other alternative I can think of is just to get a polarizer of equal size to the IRcut filter and stack them. This, however, would make it difficult to gauge polarization, at least I think it would.

So, w that said, Does anyone have any insight at all?
 
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Thank you, NKSYOON. I've got the same suggestion from someone at DPReview as well, although a different retailer. Still, JSU has a good point. I think I'll order the 15 and then just shoot through my 72mm polarizer to see if I like the result. If I do, then I'll order the Kenko. If not, well, I guess I'll keep or return the 15 on it's own merits.

Thanks again, all.

Oh, I will order the keno for my CV35.

Thanks!
 
Hi. I guess there would be some vignetting if you stack the filters. A question.. Wouldn't there be some strange effects with a polarizer on such a wide lens? (I haven't been using a polarizer since my F2)
Cheers!
 
JSU said:
A polarizer on such a wide lens might be useful for controlling reflections from windows. Even in the vertical (portrait) it is unreasonable to expect to polarize the entire sky shot with an effective Dov of MM (MM on the 1.3x crop of the M).

The sky will be very uneven tonal wise with a dark band of polarization and the remainder being lighter. This is worse for horizontal shots (landscape) with lots of sky.

To darken the sky one would be much better served using a graduated ND filter for color and a contrast filter such as yellow, orange or red for B&W.

The CV 15/4.5 is excellent on the M8.2, if one likes the 20/21 mm FoV on a RF, which is an essential look for me.
Click to expand...

Actually polarizers work best on mid to long teles. Not that great on wides, as there is too, much variance in the angle of light for wides. There are many reports on pol. filters.
Read this;
http://www.luminous-landscape.com/tutorials/polarizers.shtml

A lot of info there.
 
I used the LTM version of the 15mm on my M8 and it was fantastic. For the IR issue, I just stuck a 39mm UV/IR filter inside the tiny hood and made a gaff tape shim to keep it in tight. Worked perfectly. I always preferred the lens without the filter though since the sharp angle of light entering the lens from the edges can impart a cyan fringe to the edge of the photo.
It's one of the perfect optics for the M8. I really want to get my hands on a 12mm...

Phil Forrest
 
How is the 15mm CV for flare/internal reflections? I have a 15/3.5 Nikkor which is a great lens except for the flare when light sources are anyplace where they shine directly on the front element. I've thought of using the CV 15mm on my M8 instead.
 
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