osera Posted December 31, 2006 Author Share #21 Â Posted December 31, 2006 Advertisement (gone after registration) Here's another thing. I can definitely see a difference in the vignetting with lens detection enabled. I hope that comes through on these web images. However, the EXIF fields for lens focal length and min aperture remain blank. These fields are filled in with my other coded lenses, both with factory coding and the homemade sharpie coding. Â Also, I took my 21 ASPH with its sharpie coding and removed the one black dot which is the difference between the 21 and the 16-18-21 tri-elmar, and it also does not fill in the EXIF. (The 21 also selects the 28-90 frames like the tri.) Â So I'm not sure what's going on there. Does anyone have a coded old tri-elmar- what goes into those fields? Does anyone have a new tri they could check with the M8 for me? I wonder if this is a firmware issue. Â BTW, I am using an original camera which I updated to 1.09 myself. Â And Happy New Year to all! Link to post Share on other sites More sharing options...
bnelson Posted December 31, 2006 Share #22 Â Posted December 31, 2006 Allen... Â Really good shots from Rosemary Beach. Â Bill Link to post Share on other sites More sharing options...
scott kirkpatrick Posted December 31, 2006 Share #23  Posted December 31, 2006 Here's another thing. I can definitely see a difference in the vignetting with lens detection enabled. I hope that comes through on these web images. However, the EXIF fields for lens focal length and min aperture remain blank. These fields are filled in with my other coded lenses, both with factory coding and the homemade sharpie coding. Also, I took my 21 ASPH with its sharpie coding and removed the one black dot which is the difference between the 21 and the 16-18-21 tri-elmar, and it also does not fill in the EXIF. (The 21 also selects the 28-90 frames like the tri.)  So I'm not sure what's going on there. Does anyone have a coded old tri-elmar- what goes into those fields? Does anyone have a new tri they could check with the M8 for me? I wonder if this is a firmware issue.  BTW, I am using an original camera which I updated to 1.09 myself.  And Happy New Year to all!  The EXIF fields are empty because the poor M8 doesn't know which of the three focal lengths you have selected. The old tri-elmar had a linkage that actually moved the frame line lug on the mount when the lens was set to each focal length, to bring up the right frame lines. The WATE doesn't have any frame lines ready for it, so they left that linkage out (the E Puts article on the new TE has pictures of the back ends of both lenses). And I suspect the vignetting correction that you get is the same for all three settings, since between the lens and the CCD they all behave in a pretty similar way. Wait to see how firmware 1.1x with the corrections for an IR filter in front behaves -- that's the point at which the corrections are very different for the three settings.  Anyway, your pictures show that the corrections are pretty useful. Was lens detection enabled in the first pictures that you posted? One thing that occurs with other lenses is that pushing the frame selection lever to some position other than its default turns off the vignetting correction, since the M8 is getting inconsistent information. Does that happen for you?  scott Link to post Share on other sites More sharing options...
jlm Posted December 31, 2006 Share #24 Â Posted December 31, 2006 thanks allen; shows that applying the TE code to the 15mm CV might be useful. Link to post Share on other sites More sharing options...
marknorton Posted December 31, 2006 Share #25  Posted December 31, 2006 Allen, when you display an image taken with lens detection enabled on the camera and press the info button, is the focal length field also blank?  On the old Tri-Elmar, the correct focal length is displayed both in the info window and in the EXIF because, as Scott says, the camera can figure it out.  If you look at the review of this new lens in LFI, it shows the layout of the elements in each of the three positions and there's much less change than there is between the 3 focal lengths in the original lens. That adds weight to the argument that so far as the existing correction is concerned, it's the same for each of the three focal lengths.  The $64k question, as Scott points out, is how they are going to correct for the red-vignetting caused by the IR filter where one size will definitely not fit all, at least, not if they are doing the job properly.  Does make me wonder whether Leica have cut corners with this lens. After all, it does only cost €3100... Link to post Share on other sites More sharing options...
JeffWright Posted December 31, 2006 Share #26  Posted December 31, 2006 Here are some with the new 16-18-21 tri-elmar at 16mm, iso 320, M8. No IR filter (special filter holder needed). I used the "old" 21,24,28 finder - works pretty well, as long as you don't mind finders. Lens detection enabled. Lens is coded, of course. Third shot was looking for degree of vignetting.  FWIW, the serial number is the first one I've seen over 4000000. (OK, I know, like who cares... )  Thanks a lot for posting this, now you've given me iwantitis....Must resist temptation.... Link to post Share on other sites More sharing options...
osera Posted December 31, 2006 Author Share #27  Posted December 31, 2006 Advertisement (gone after registration) Allen... Really good shots from Rosemary Beach.  Bill  Thanks, Bill. You need to come down and visit us here sometime soon.    Was lens detection enabled in the first pictures that you posted? One thing that occurs with other lenses is that pushing the frame selection lever to some position other than its default turns off the vignetting correction, since the M8 is getting inconsistent information. Does that happen for you?  Scott- Yes, lens detection was enabled on the earlier shots. And I'll have to try moving the frame selector lever later. These were with it left in the 28-90 position.   Allen, when you display an image taken with lens detection enabled on the camera and press the info button, is the focal length field also blank?  Mark- yes, the field on the screen is also blank, whereas it does show lens focal length with other coded lenses.  It will indeed be interesting to see how well this lens will respond to cyan correction with a IR filter. I think, however, that for me this is the lens where I am least likely to use a filter because of the kind of shooting I will do with it. But it would definitely be important to others. Link to post Share on other sites More sharing options...
marknorton Posted December 31, 2006 Share #28 Â Posted December 31, 2006 The existing vignetting correction seems to be working well, so there's definitely code in 1.09 to support this lens. I think using a filter will be important for anyone doing landscape work with this lens, the only way to get greens the correct colour with all that IR contamination. Â Who knows what they will do, but I think there will have to be some way of manually specifying the focal length selected so that the red vignetting correction can work correctly, and I favour an extra menu selection in the Set Menu which appears when the TE is mounted. Link to post Share on other sites More sharing options...
xjr Posted February 8, 2007 Share #29  Posted February 8, 2007 Just for your information I saw SH Photo have the filter holder listed on the website.Leica - M Lens Filterholder for 4/16-18-21mm ASPH. Tri-Elmar 14473 with EU warranty - SH photo  If you call them today they will tell you that '' if you order today perhaps you get the items in April'' Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.