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| D5100 light metering with older manual lenses | Rating: 
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| Author | Post |
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| Posted by amazing50: Sun Jul 14th, 2013 14:24 | 1st Post |
| My D5100 only works in manual mode with older lenses which is OK. The problem is that there seems to be no way to get a light reading other than with an external meter, or trial and error guesswork. Even the D1 would work on aperture priority and select an appropriate speed. Thanks Mike
____________________ There is nothing worse than a sharp image of a fuzzy concept ;~) Mike Grace |
| Posted by blackfox: Sun Jul 14th, 2013 16:42 | 2nd Post |
| can you not use it in full manual mode ,not familiar with that model so can't really answer properly
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| Posted by amazing50: Sun Jul 14th, 2013 23:18 | 3rd Post |
| It only will take pictures in full Manual mode, using any other settings gives a "Lense not attached" message.
____________________ There is nothing worse than a sharp image of a fuzzy concept ;~) Mike Grace |
| Posted by Robert: Mon Jul 15th, 2013 03:47 | 4th Post |
| For anything critical I take a series of exposures of grass and check the histo for good exposure, then check the histo every exposure during the session. I have used a Nikkor Micro 55 manual lens on a D3100 with good results using that method. If I am bracketing the exposure with other cameras, almost without exception I find that the 'correct' exposure and minus 1/3 stop seems to give the closest to the desired results. I still check the histo for confirmation.
____________________ Robert. |
| Posted by Gilbert Sandberg: Mon Jul 15th, 2013 05:18 | 5th Post |
| A, You are right. The camera's like the D5100 have no coupling with non-CPU lenses, so the camera has no way of knowing that f-stop is set on the lens. On the other hand, in full manual mode some old lenses can be mounted on a D3nnn/D5nnn that cannot be mounted on some other DSLR Nikon camera's. A work-around would be: mount a CPU lens (like some AF-S kit lenses) and do an exposure reading in manual mode, then mount your non-CPU lens (and check the exposure on the histogram). Regards, Gilbert
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| Posted by amazing50: Sat Jul 27th, 2013 10:53 | 6th Post |
| I'm going to try this AF Confirm T-2 T2 Telephoto Lens to Nikon F Mount Adapter, from eBay. Apparently it tells the camera that there is a lense mounted and set at f2.8 so that the aperture priority settings should work on anything mounted on the adaptor. There are various mount adaptors available from the same vendor as the link below to the one I ordered. I'll update when it arives. http://www.ebay.com/itm/180992505258?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_3419wt_1162
____________________ There is nothing worse than a sharp image of a fuzzy concept ;~) Mike Grace |
| Posted by blackfox: Sat Jul 27th, 2013 11:36 | 7th Post |
Robert wrote:For anything critical I take a series of exposures of grass and check the histo for good exposure, then check the histo every exposure during the session. thats what i normally do to ,but the d7100 seems to have thrown that one out of the window rob ,its bang on the "0" they certainly have changed the rule book
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| Posted by amazing50: Thu Aug 8th, 2013 10:51 | 8th Post |
| My ROXSEN T-2 Telephoto Lens to Nikon F mount adapter ring with AF Confirm Chip for Nikon arrived today and it works just fine. Basically there is a 5 pin chip glued to a T2-Nikon adaptor ring that tells the automation that a 50mm f2.8 lense is mounted on the camera and it allows arpeture priority to function for lens mounted in it. It would be nice to be able to buy the chips and mount them on older manual Nikon lenses, tel converters, bellows, etc.
____________________ There is nothing worse than a sharp image of a fuzzy concept ;~) Mike Grace |
| Posted by Robert: Thu Aug 8th, 2013 13:28 | 9th Post |
| You can, either get hold of old or broken lenses and transplant the chip, or contact Bj¸rn R¸rslett who may supply the chips. Visit Bj¸rn's website... http://www.naturfotograf.com/index2.html
____________________ Robert. |
| Posted by jk: Thu Aug 8th, 2013 19:35 | 10th Post |
| There is a feature on my D3 D300, etc that allows me to setup the max f stop and focal length for non-CPU lenses. This works very well. I dont know if the D 5100 has this feature.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
| Posted by amazing50: Fri Aug 9th, 2013 01:33 | 11th Post |
| The D5000 & D5100 will only recognize non-CPU lenses on the M (manual) setting and there is no light meter function at all. I will be using the chipped T-mount for a microscope adaptor and it will allow the arpeture priority setting to function. The D5100 has a great articulating LCD, which is most useful, too bad the pro nikons don't have this feature;~(
____________________ There is nothing worse than a sharp image of a fuzzy concept ;~) Mike Grace |
| Posted by Gilbert Sandberg: Fri Aug 9th, 2013 03:12 | 12th Post |
| JK, re: I dont know Is this an effort to confuse the reader? Cameras like the D300/5000 do not have any Ai coupling, unlike D1/2/3/4 and others. Regards, Gilbert
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| Posted by jk: Fri Aug 9th, 2013 18:06 | 13th Post |
Gilbert Sandberg wrote:JK, Hi Gilbert, No i have not used a D5000/5100 or ever had hands on one so it is a genuine "I dont know at all".
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
| Posted by amazing50: Sat Sep 7th, 2013 22:06 | 14th Post |
| Found a chip for $30 that can be glued to any Nikon non CPU lens or adaptor like a Tamron Adaptall or a bellows. I'll update when my order arives. http://www.ebay.com/itm/231045618369?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_6329wt_1396
____________________ There is nothing worse than a sharp image of a fuzzy concept ;~) Mike Grace |
| Posted by jk: Sun Sep 8th, 2013 02:55 | 15th Post |
amazing50 wrote:Found a chip for $30 that can be glued to any Nikon non CPU lens or adaptor like a Tamron Adaptall or a bellows. I'll update when my order arives. That is very interesting. That provides some new functionality that I havent seen offered before. Seems like a clever piece of electronics. Please report on how you get on fitting it and also on how well it works for you.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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