chris_tribble Posted October 22, 2009 Share #1 Posted October 22, 2009 Advertisement (gone after registration) Does anyone know the correct code for the Apo-Telyt 135. As I'm only going to be using M9 (planning to get the second body soon) I no longer need to use my adapted 135 coded mount (Malcolm Taylor's sorting me out on this...) However, I do need the correct 6 bit code for the Apo-Telyt and this hasn't been added to the excellent Leica Code's page (Leica M8 Lens Codes). REALLY grateful if someone can post an image of the coded 135 A-T base or give the code (reading clockwise as you look at the back of the lens - the coding for the 135 Elmarit reads 001001 where zero = white) Thanks for any help! Link to post Share on other sites More sharing options...
Advertisement Posted October 22, 2009 Posted October 22, 2009 Hi chris_tribble, Take a look here 6 bit code for Apo-Telyt 135. I'm sure you'll find what you were looking for!
rsh Posted October 22, 2009 Share #2 Posted October 22, 2009 Chis: All of my lenses are coded with the exception of the 135 and that is because coding was unavailable for the M8. Most likely, I will not code it when I am able to purchase the M9 as the focal length is so long for the M. Link to post Share on other sites More sharing options...
guidomo Posted October 22, 2009 Share #3 Posted October 22, 2009 There isn't one. I use the 135/2.8 code: Leica M8 Lens Codes Link to post Share on other sites More sharing options...
adan Posted October 22, 2009 Share #4 Posted October 22, 2009 There is no coding pattern for any 135 except the f/2.8 with goggles. The 135 f/3.4 can be manually selected in the M9 menu of lenses, if one wants the focal length to show up in EXIF and whatever microscopic corrections are needed (if any). Important point: Leica has added several lenses to the menu - but that does not mean they have also assigned a 6-bit number for those same lenses or will provide coded mounts for those lenses. Coding - and the menu - are two separate and distinct pathways to identifying the lens in use. Link to post Share on other sites More sharing options...
michali Posted October 22, 2009 Share #5 Posted October 22, 2009 Chris- I've hand coded my 135 APO TELYT as an Elmarit, with the M Coder. I also couldn't find the code anywhere. BYTW the M9 does have the 135 APO-TELYT on the Manual lens Detection menu. Link to post Share on other sites More sharing options...
chris_tribble Posted October 22, 2009 Author Share #6 Posted October 22, 2009 Thanks to all for replies. I'd also noted that the Apo Telyt 135 is listed on the M9 menu - hence the question - up until now I'd used the Elmarit codes... Do we really think that there's no 6 bit code for a lens that can be manually selected... Odd? I'll email Leica and see if I can get any advice... Best C: Link to post Share on other sites More sharing options...
sandymc Posted October 22, 2009 Share #7 Posted October 22, 2009 Advertisement (gone after registration) Chris, If you can shoot a DNG with the code set to Apo Telyt 135 and post it somewhere it should be possible to pull the code from the MakerNotes; I think we understand them well enough to get that much out. Sandy Link to post Share on other sites More sharing options...
russell Posted October 22, 2009 Share #8 Posted October 22, 2009 I asked a similar questions about the 35mm pre-asph Summilux. It's on the manual menu but no 6-bit. I'm still holding out hope for a mystery missing 6-bit for these guys. Link to post Share on other sites More sharing options...
wlaidlaw Posted October 22, 2009 Share #9 Posted October 22, 2009 I asked a similar questions about the 35mm pre-asph Summilux. It's on the manual menu but no 6-bit. I'm still holding out hope for a mystery missing 6-bit for these guys. I think I am right in saying that 6 bits only allows for 62 lenses (ignoring 00 00 00 and 11 11 11). Maybe they are running out of codes. Wilson Link to post Share on other sites More sharing options...
carstenw Posted October 22, 2009 Share #10 Posted October 22, 2009 Not quite yet. There are about 38 coded lenses so far, and more on the way I suppose. They do need to be careful though. Link to post Share on other sites More sharing options...
swamiji Posted October 22, 2009 Share #11 Posted October 22, 2009 Chris, If you can shoot a DNG with the code set to Apo Telyt 135 and post it somewhere it should be possible to pull the code from the MakerNotes; I think we understand them well enough to get that much out. Sandy Perhaps... My bet is that the embedded manual list is outside of the 6-bit encoding range (older 6-bit excepted), thus will not provide a usable code. Link to post Share on other sites More sharing options...
stunsworth Posted October 22, 2009 Share #12 Posted October 22, 2009 I think I am right in saying that 6 bits only allows for 62 lenses (ignoring 00 00 00 and 11 11 11). Maybe they are running out of codes. Why ignore them? Anyway since the firmware uses the frame selector - if you have the correct code with the wrong framelines the lens isn't recognised - it's actually 3 x 64 permutations. Link to post Share on other sites More sharing options...
swamiji Posted October 22, 2009 Share #13 Posted October 22, 2009 Why ignore them? Anyway since the firmware uses the frame selector - if you have the correct code with the wrong framelines the lens isn't recognised - it's actually 3 x 64 permutations. I am not sure about that. I tried to mark a 6-bit code onto a lux 35 pre-asph, and kept on getting it wrong. It was however recognized by the camera as a 75 cron or some other lens... depending on my marking.... It did not seem to matter what the frame selector was set to... as they say your milage may vary... Link to post Share on other sites More sharing options...
SJP Posted October 22, 2009 Share #14 Posted October 22, 2009 I would surmise 62 x 3 = 186 lenses?? At least as far as I know the 6 bit code only works if the frameline cam is at the right position. This would mean that the tables are both 6 bit and frame dependent. Link to post Share on other sites More sharing options...
swamiji Posted October 22, 2009 Share #15 Posted October 22, 2009 I would surmise 62 x 3 = 186 lenses?? At least as far as I know the 6 bit code only works if the frameline cam is at the right position. This would mean that the tables are both 6 bit and frame dependent. Thats what the math would suggest... but I note in the Leica M8 Lens Codes... Leica M8 Lens Codes There are no duplicates, and if I recall correctly I don't remember a electronic connection between the cam, and the computer (when the m8 was taken apart). If the M9 is different... then that opens a big kettle of fish... Link to post Share on other sites More sharing options...
Leicaiste Posted October 22, 2009 Share #16 Posted October 22, 2009 Thats what the math would suggest... but I note in the Leica M8 Lens Codes... Leica M8 Lens Codes There are no duplicates, and if I recall correctly I don't remember a electronic connection between the cam, and the computer (when the m8 was taken apart). If the M9 is different... then that opens a big kettle of fish... With a coded Tri-Elmar 28/35//50, the M8 and M9 are using the cam to now which focal lens is in use. Link to post Share on other sites More sharing options...
swamiji Posted October 22, 2009 Share #17 Posted October 22, 2009 With a coded Tri-Elmar 28/35//50, the M8 and M9 are using the cam to now which focal lens is in use. Good point... I just picked up one.... I will have to test... but the MATE has only one 6-bit code (101010 (42)) not three, then how would that work? Link to post Share on other sites More sharing options...
stunsworth Posted October 22, 2009 Share #18 Posted October 22, 2009 Good point... I just picked up one.... I will have to test... but the MATE has only one 6-bit code (101010 (42)) not three, then how would that work? The 28-35-50 Tri-Elmar also only has one 6 bit code, the camera knows which focal length has been selected because of the frame line selector. Link to post Share on other sites More sharing options...
swamiji Posted October 22, 2009 Share #19 Posted October 22, 2009 The 28-35-50 Tri-Elmar also only has one 6 bit code, the camera knows which focal length has been selected because of the frame line selector. That would imply that the 6 bit code is incorrect. It is actually a 8-bit code, generated by two distinct mechanisms. If one were to analyze the Leica M8 Lens Codes in relation to embedded codes in firmware I wonder what codes would be the relationship, if any. However, if one would wish to 6-bit a lens that is only in the manual list, I wonder if there is any relationship to the bar code at all. In manual mode the bar code/frame line selector are ignored in terms firmware, and the manual list does not have to conform to the 6-bit lens list. There are just a few that overlap... and as I remember, if you are in manual mode, and put a 6-bit lens on, it does not switch back to auto.... Just a thought... Link to post Share on other sites More sharing options...
stunsworth Posted October 22, 2009 Share #20 Posted October 22, 2009 The six bit code refers to the six bit on the lens. The lens selector is clearly used in determining the full code - otherwise the Tri-Elmar wouldn't work. Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.