Guest NEIL-D-WILLIAMS Posted October 27, 2013 Share #1 Â Posted October 27, 2013 Advertisement (gone after registration) Guys, I recently bought a new Noctilux 0.95 but when I try to shoot at 0.95 the meta data says it was shot at 1.2 or 1.0........this morning I shot out of the car window (I was the passenger) and made a point of holding the aperture ring hard over to just past the 0.95 and that shot shows 1.2 in lightroom.............am I missing something here of is my lens just %^%$#$## up? Link to post Share on other sites More sharing options...
Advertisement Posted October 27, 2013 Posted October 27, 2013 Hi Guest NEIL-D-WILLIAMS, Take a look here Help needed shooting at 0.95 with Noctilux. I'm sure you'll find what you were looking for!
jdlaing Posted October 27, 2013 Share #2 Â Posted October 27, 2013 The camera only guesses at the aperture as there is no connection to the lens electronically. The EXIF and metadata displays that guess. Link to post Share on other sites More sharing options...
Guest NEIL-D-WILLIAMS Posted October 27, 2013 Share #3 Â Posted October 27, 2013 The camera only guesses at the aperture as there is no connection to the lens electronically.The EXIF and metadata displays that guess. Thank you sir.........I feel better now Link to post Share on other sites More sharing options...
hossegor Posted October 27, 2013 Share #4 Â Posted October 27, 2013 i got the same thing with mine, it is recognized as nocti in the camera. dont know if its normal or not Link to post Share on other sites More sharing options...
tobey bilek Posted October 27, 2013 Share #5 Â Posted October 27, 2013 The camera has two meters, internal to set exposure, external to read full light. The difference is used to calculate the aperture of lens and that is what exif data shows. Mine are never exact either with any lens, any aperture, any camera. Â All that really matters is the picture is correct. Link to post Share on other sites More sharing options...
Jager Posted October 27, 2013 Share #6 Â Posted October 27, 2013 The aperture estimate is so wholly wrong, so often (as Tobey says, with any lens and any camera), that one wonders why Leica ever provided this 'feature' in the first place. Link to post Share on other sites More sharing options...
wattsy Posted October 27, 2013 Share #7 Â Posted October 27, 2013 Advertisement (gone after registration) one wonders why Leica ever provided this 'feature' in the first place. Â I've always assumed that the feature was included to enable more sophisticated in-camera corrections for vignetting, colour shifts, etc. when using a 6-bit coded lens. Link to post Share on other sites More sharing options...
Paul J Posted October 27, 2013 Share #8 Â Posted October 27, 2013 What is most surprising is when you shoot with an ND filter as it reads f11 (or whatever depending ND strength) or some crazy number. Â This is one annoying thing about the M design. Sometimes I really need to know exact f Stop which is impossible unless you make note of it at shooting and/or remember. Link to post Share on other sites More sharing options...
jdlaing Posted October 27, 2013 Share #9  Posted October 27, 2013 Thank you sir.........I feel better now  Having said that I think it is weird how the camera guesses at the aperture. I wonder what the computer uses as a base for randomly choosing the value? Link to post Share on other sites More sharing options...
algrove Posted October 27, 2013 Share #10  Posted October 27, 2013 What is most surprising is when you shoot with an ND filter as it reads f11 (or whatever depending ND strength) or some crazy number. This is one annoying thing about the M design. Sometimes I really need to know exact f Stop which is impossible unless you make note of it at shooting and/or remember.  Agree it's annoying to have a guessimate. With modern cameras you would think it could do better, like my 5D3 gives the exact number as I am sure the a7r will with its lenses. I sometimes am amazed at what crap we put up with to shoot Leica.  Neil-You will get this with every lens, even your 21/1.4, since there is no connection to tell the US$7k camera the actual f stop you are using. That little window up top on the front is where it all comes from. What that window reads determines what the EXIF window shows and I wonder if shading it or putting it in the direct sunlight affects the f stop outcome. Link to post Share on other sites More sharing options...
Guest NEIL-D-WILLIAMS Posted October 27, 2013 Share #11 Â Posted October 27, 2013 What is most surprising is when you shoot with an ND filter as it reads f11 (or whatever depending ND strength) or some crazy number.. PaulI am shooting with a 3 stop ND during the day so that would explain the difference ............... Link to post Share on other sites More sharing options...
platypus Posted October 28, 2013 Share #12 Â Posted October 28, 2013 Yep...the Nocti has it's little ways and this quirk is one of them, but I don't think the ND filter is the cause as it also happens without it. Link to post Share on other sites More sharing options...
thighslapper Posted October 28, 2013 Share #13 Â Posted October 28, 2013 Wide open LR returns 1 or 1.2 depending on the circumstances. With a ND filter you will get 2.8-4. It's a problem with all Leica lenses on an M that you will just have to learn to live with..... Â You will have to guess whether the camera guess is correct...... Link to post Share on other sites More sharing options...
algrove Posted October 28, 2013 Share #14  Posted October 28, 2013 Wide open LR returns 1 or 1.2 depending on the circumstances. With a ND filter you will get 2.8-4. It's a problem with all Leica lenses on an M that you will just have to learn to live with..... You will have to guess whether the camera guess is correct......  And it very often not correct. If you shoot every lens wide open all the time then you know what f stop you used. Just joking. Link to post Share on other sites More sharing options...
Guest NEIL-D-WILLIAMS Posted October 29, 2013 Share #15 Â Posted October 29, 2013 Thanks for all the replies...............for me 99% of the time I already know what aperture I am going to shoot with as that is the first knob i go for when I see the shot. I was just confused why the camera was saying 1.4 when i had the dam thing hard over to the left Link to post Share on other sites More sharing options...
pfhrased Posted October 29, 2013 Share #16  Posted October 29, 2013 What is most surprising is when you shoot with an ND filter as it reads f11 (or whatever depending ND strength) or some crazy number. This is one annoying thing about the M design. Sometimes I really need to know exact f Stop which is impossible unless you make note of it at shooting and/or remember.  You could do what we did in the bad old days and take a notebook with you Link to post Share on other sites More sharing options...
Guest borge Posted October 29, 2013 Share #17 Â Posted October 29, 2013 Dude, just shoot wide open. You don't have to worry about what the EXIF info says then Link to post Share on other sites More sharing options...
algrove Posted October 29, 2013 Share #18 Â Posted October 29, 2013 Years ago some guys used to tape their lenses wide open just in case they turned the f stop ring by accident while in the moment to get a shot. Link to post Share on other sites More sharing options...
Guest NEIL-D-WILLIAMS Posted October 29, 2013 Share #19 Â Posted October 29, 2013 Years ago some guys used to tape their lenses wide open just in case they turned the f stop ring by accident while in the moment to get a shot.Were you hinting earlier about getting the new Sony r7 or whatever it is called Link to post Share on other sites More sharing options...
algrove Posted October 29, 2013 Share #20 Â Posted October 29, 2013 I have an a7r on order. Will have to see if I return it or keep it. Use of M lenses will be the decision maker. They are due to ship in about a month now, although my order might be placed well beyond that since I placed my order the morning after the official launch. Â Due my failing eyesight I really would like to have a small AF camera other than the RX-1. If one of the new FE lenses works for me then I might keep it for use with that, except, the one FE lens that interests me the most will not be out until February sometime, the 24-70. Problem with Sony lenses, many who know them first hand say they are mostly crap. Link to post Share on other sites More sharing options...
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