Steve <srjm72499@[EMAIL PROTECTED]
> 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) .
In general you don't care 2 different things that way, and it depends on
several other thing's beside the brightness.
- 85mm vs 50mm have 2 different set of leneses (requirement)
- If you capture the same subject then the 85mm should be 35mm closer, the
subject should be around 1/3 closer (larger), so the subject should be
brighter (this many people don't pay much attention to)
Same with the very same ZOOM lens, you can get the same subject larger,
brighter, sharper by zoom in closer. Or this is one of the tricks or
advance of long zoom lens when shooting in low-light situation.
- Also, you can look at the very end of the lens (the part attachs to the
body) and you may see some difference there (or I don't have yours to
confirm but I know some do have the size difference, and when talking
about
size I also mean LIGHT).
> Thanks.
> -Steve
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