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#1
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Problem w/ 50mm 1.8 lens (Nikon AF)
I recently purchased two used lenses from different sources, and just
received them in the mail (yea!). Both are nikon: 85mm and 50mm 1.8 lenses. However, when comparing images from the two, I'm noticing that the 50 is consistenly 1 exp position underexposed. I can compensate in the auto modes by bumping up the exposure, so I first thought this might just be a meteringt thing. However, I just tried a comparison shooting outdoor shots in full manual. For the same shutter speed (1/60), f/8 ap on the 85 gave the same as f/5 for the 50mm. f/8 on the 50 was a LOT darker... Is this normal, and if not, what can I do (short of getting rid of the lens) . Thanks. -Steve |
#2
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Problem w/ 50mm 1.8 lens (Nikon AF)
"Steve" wrote in message ... I recently purchased two used lenses from different sources, and just received them in the mail (yea!). Both are nikon: 85mm and 50mm 1.8 lenses. However, when comparing images from the two, I'm noticing that the 50 is consistenly 1 exp position underexposed. I can compensate in the auto modes by bumping up the exposure, so I first thought this might just be a meteringt thing. However, I just tried a comparison shooting outdoor shots in full manual. For the same shutter speed (1/60), f/8 ap on the 85 gave the same as f/5 for the 50mm. f/8 on the 50 was a LOT darker... Is this normal, and if not, what can I do (short of getting rid of the lens) . Thanks. -Steve No, it is not normal.... I check all my lenses from time to time just to see if something like this has happened. So far, they all do just fine. Jim |
#3
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Problem w/ 50mm 1.8 lens (Nikon AF)
In article ,
"Jim" wrote: "Steve" wrote in message ... I recently purchased two used lenses from different sources, and just received them in the mail (yea!). Both are nikon: 85mm and 50mm 1.8 lenses. However, when comparing images from the two, I'm noticing that the 50 is consistenly 1 exp position underexposed. I can compensate in the auto modes by bumping up the exposure, so I first thought this might just be a meteringt thing. However, I just tried a comparison shooting outdoor shots in full manual. For the same shutter speed (1/60), f/8 ap on the 85 gave the same as f/5 for the 50mm. f/8 on the 50 was a LOT darker... Is this normal, and if not, what can I do (short of getting rid of the lens) . Thanks. -Steve No, it is not normal.... I check all my lenses from time to time just to see if something like this has happened. So far, they all do just fine. Lucky you. Any advice for the OP? -- With or without religion, you would have good people doing good things and evil people doing evil things. But for good people to do evil things, that takes religion. Steven Weinberg |
#4
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Problem w/ 50mm 1.8 lens (Nikon AF)
If you bought on Ebay you may be out of luck and have to learn to live with
exposure compensation. Most real stores have time-limited policies on returns. |
#5
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Problem w/ 50mm 1.8 lens (Nikon AF)
Steve wrote:
I recently purchased two used lenses from different sources, and just received them in the mail (yea!). Both are nikon: 85mm and 50mm 1.8 lenses. However, when comparing images from the two, I'm noticing that the 50 is consistenly 1 exp position underexposed. I can compensate in the auto modes by bumping up the exposure, so I first thought this might just be a meteringt thing. However, I just tried a comparison shooting outdoor shots in full manual. For the same shutter speed (1/60), f/8 ap on the 85 gave the same as f/5 for the 50mm. f/8 on the 50 was a LOT darker... Is this normal, and if not, what can I do (short of getting rid of the lens) . Thanks. -Steve Have you any other lenses to compare them with? There is some variation between different lens designs in exposure, that's normal - but 1 stop difference seems much more than normal. I have read that the 85mm (IIRC the f1.4) tends to overexpose, with some users dialing in EV -0.5 to compensate (I don't know if the same applies for the f1.8 version) Check the aperture blade alignment by looking through the lens set at f22 and closing the aperture by moving the lever on the back of the lens. Not many lenses have blades aligned perfectly resulting in a perfect polygon as the lens is stopped down, but if it was bad enough to cause 1 stop over exposure, you should see it. If you quickly release the lever, the aperture should open up fully instantly. |
#6
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Problem w/ 50mm 1.8 lens (Nikon AF)
"Ockham's Razor" wrote in message ... In article , "Jim" wrote: "Steve" wrote in message ... I recently purchased two used lenses from different sources, and just received them in the mail (yea!). Both are nikon: 85mm and 50mm 1.8 lenses. However, when comparing images from the two, I'm noticing that the 50 is consistenly 1 exp position underexposed. I can compensate in the auto modes by bumping up the exposure, so I first thought this might just be a meteringt thing. However, I just tried a comparison shooting outdoor shots in full manual. For the same shutter speed (1/60), f/8 ap on the 85 gave the same as f/5 for the 50mm. f/8 on the 50 was a LOT darker... Is this normal, and if not, what can I do (short of getting rid of the lens) . Thanks. -Steve No, it is not normal.... I check all my lenses from time to time just to see if something like this has happened. So far, they all do just fine. Lucky you. Any advice for the OP? -- With or without religion, you would have good people doing good things and evil people doing evil things. But for good people to do evil things, that takes religion. Steven Weinberg Take it to a pawnshop. You buy a brand new one with a USA warranty for only a little bit more than the repair costs. Jim |
#7
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Problem w/ 50mm 1.8 lens (Nikon AF)
On Sat, 23 Feb 2008 08:25:45 -0800 (PST), Steve
wrote: I recently purchased two used lenses from different sources, and just received them in the mail (yea!). Both are nikon: 85mm and 50mm 1.8 lenses. However, when comparing images from the two, I'm noticing that the 50 is consistenly 1 exp position underexposed. I can compensate in the auto modes by bumping up the exposure, so I first thought this might just be a meteringt thing. However, I just tried a comparison shooting outdoor shots in full manual. For the same shutter speed (1/60), f/8 ap on the 85 gave the same as f/5 for the 50mm. f/8 on the 50 was a LOT darker... Is this normal, and if not, what can I do (short of getting rid of the lens) . Thanks. -Steve There is not, by chance, a filter on the 50mm lens is there? |
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