chris_yu Posted December 2, 2015 Share #1 Posted December 2, 2015 Advertisement (gone after registration) Hi there, I have these two lenses and I am planning to use them on my M240P with the R to M adapter 14642 shall I set the lens detection to OFF or MANUAL.If MANUAL ...what lens to select. Thanks Link to post Share on other sites More sharing options...
Advertisement Posted December 2, 2015 Posted December 2, 2015 Hi chris_yu, Take a look here R to M adapter 14642 with Apo-Telyt-R 400/2.8 & Apo-Telyt-R 800/5.6. I'm sure you'll find what you were looking for!
jaapv Posted December 2, 2015 Share #2 Posted December 2, 2015 The adapter is coded, so keep it at auto. It will bring up a (limited) R lenses menu. Your lenses will not be in it, but that does not matter. There are few reasons to switch to manual, only if your lens is uncoded but has a screw in the wrong place so that it could be falsely identified. Or if you want to get an uncoded lens into EXIF, etc. Link to post Share on other sites More sharing options...
chris_yu Posted December 2, 2015 Author Share #3 Posted December 2, 2015 The adapter is coded, so keep it at auto. It will bring up a (limited) R lenses menu. Your lenses will not be in it, but that does not matter. There are few reasons to switch to manual, only if your lens is uncoded but has a screw in the wrong place so that it could be falsely identified. Or if you want to get an uncoded lens into EXIF, etc. I knew the R to M adapter is coded.But when I go to the Menu-lens detection,I can only choose OFF or MANUAL.However,in the MANUAL section,the 2 lenses are not included,so what shall I do??? Link to post Share on other sites More sharing options...
masjah Posted December 2, 2015 Share #4 Posted December 2, 2015 I knew the R to M adapter is coded.But when I go to the Menu-lens detection,I can only choose OFF or MANUAL.However,in the MANUAL section,the 2 lenses are not included,so what shall I do??? That is correct. With the coded R-M adapter you get a choice of OFF or MANUAL. (AUTOMATIC is greyed out because the camera cannot select an R lens automatically; it would be available were a coded M lens to be mounted.) As you say the two very long lenses you have are not on the R list. I would set it either to OFF or to MANUAL with 280/4 selected. The latter choice would then write incorrect lens information to the EXIF file, but, unless you have this lens, it would at least serve as a marker remnder for you. I suspect that with very long lenses, not much other in-camera correction would be taking place anyway. Perhaps you could try out OFF as well, just in case there is any noticeable difference and you prefer it. Link to post Share on other sites More sharing options...
jaapv Posted December 2, 2015 Share #5 Posted December 2, 2015 John is right, one can select a lens if so desired. However, I personally wouldd just leave the camera at automatic and carry on photographing instead of worrying. There are absolutely no corrections for these lenses. The only thing you'll miss is the lens identification in EXIF which does not exist anyway. I suppose you can tell which images were made with an 800 mm lens nevertheless Link to post Share on other sites More sharing options...
chris_yu Posted December 2, 2015 Author Share #6 Posted December 2, 2015 Okay,I'll try to test the settings with these two lenses ASAP. Link to post Share on other sites More sharing options...
jmahto Posted December 4, 2015 Share #7 Posted December 4, 2015 Advertisement (gone after registration) John is right, one can select a lens if so desired. However, I personally wouldd just leave the camera at automatic and carry on photographing instead of worrying. There are absolutely no corrections for these lenses. The only thing you'll miss is the lens identification in EXIF which does not exist anyway. I suppose you can tell which images were made with an 800 mm lens nevertheless Not entirely... the purpose of lens selection is also to influence the auto ISO algorithm for slowest shutter speed (depending on your choice of 1/f, 1/2xf.... for minimum shutter speed). If you go full manual then it doesn't matter. Link to post Share on other sites More sharing options...
jaapv Posted December 4, 2015 Share #8 Posted December 4, 2015 I doubt whether one would use Auto ISO with those lenses that way ,manual works better; shutterspeed (fast, at least 1/1000th) and aperture are given and Auto ISO will give correct output. Link to post Share on other sites More sharing options...
jmahto Posted December 4, 2015 Share #9 Posted December 4, 2015 It depends. For primes it works for me since I am used to aperture priority mode most of the times. In that case camera knowing focal length of the lens helps. Where it doesn't work is in R (or any) zoom lens. The camera picks up lower focal length for calculating minimal shitterspeed which is certainly a problem for the longer side. Link to post Share on other sites More sharing options...
jaapv Posted December 4, 2015 Share #10 Posted December 4, 2015 Quite true, but the OP has the 400 and 800 APO, where shutterspeed priority is a must. . Most short-medium lenses are covered in the menu that is brought up by the coding. Link to post Share on other sites More sharing options...
jto555 Posted December 4, 2015 Share #11 Posted December 4, 2015 We want pics!!! Link to post Share on other sites More sharing options...
masjah Posted December 4, 2015 Share #12 Posted December 4, 2015 We want pics!!! Oh I think "worthless" really is putting it a little too strongly. The thread has set out pretty clearly those factors which the OP needs to take into consideration when choosing between the available alternatives. Link to post Share on other sites More sharing options...
jto555 Posted December 7, 2015 Share #13 Posted December 7, 2015 Oh I think "worthless" really is putting it a little too strongly. The thread has set out pretty clearly those factors which the OP needs to take into consideration when choosing between the available alternatives. I think you might be taking my little light humor a bit seriously... So all I can say is and I consider myself suitable After hours of trawling on the web, this was the only smiley I could find that expressed my desire to see some photographs taken with these wonderful lenses. I am sure you would agree with me on that and you too would like to see some photographs taken with these lenses? So on that note, Chris, when you get the lenses and camera setup, could you post some photographs, please? (So if anyone is of a sensitive disposition the following smiley, as are all the others, is only in jest) Chris, until we get pics I will be Link to post Share on other sites More sharing options...
masjah Posted December 7, 2015 Share #14 Posted December 7, 2015 I think you might be taking my little light humor a bit seriously... So all I can say is and I consider myself suitable After hours of trawling on the web, this was the only smiley I could find that expressed my desire to see some photographs taken with these wonderful lenses. I am sure you would agree with me on that and you too would like to see some photographs taken with these lenses? So on that note, Chris, when you get the lenses and camera setup, could you post some photographs, please? (So if anyone is of a sensitive disposition the following smiley, as are all the others, is only in jest) Chris, until we get pics I will be Absolutely no offence taken! Link to post Share on other sites More sharing options...
jankap Posted May 11, 2016 Share #15 Posted May 11, 2016 No pictures yet. Such interesting lenses, pity. Jan Link to post Share on other sites More sharing options...
W124 Posted May 13, 2016 Share #16 Posted May 13, 2016 Hi, here you can find some pictures https://www.flickr.com/groups/2807974@N22/ Link to post Share on other sites More sharing options...
jmahto Posted May 13, 2016 Share #17 Posted May 13, 2016 Hi, here you can find some pictures https://www.flickr.com/groups/2807974@N22/ Says no photos in the group. Link to post Share on other sites More sharing options...
W124 Posted May 13, 2016 Share #18 Posted May 13, 2016 Some pictures Helgoland Beach by hen. ry, auf Flickr Helgoland Fotograf by hen. ry, auf Flickr Helgoland Bird by hen. ry, auf Flickr Helgoland Seal by hen. ry, auf Flickr Link to post Share on other sites More sharing options...
gautier Posted May 15, 2016 Share #19 Posted May 15, 2016 Read this thread about these lenses on a M (or this post). With the R to M adapter 14642, there is sometimes a "mechanical" vignetting. Link to post Share on other sites More sharing options...
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