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#1 |
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What are the differances between these and is the 272e worth $40-$50 more? I use a Nikon D70.
Thank You, Eric |
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#2 | |
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Your D70 can use either version.
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#3 | |
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Furthermore, Adorama seems to be quite lazy in its model number labelling. Often, they seem to just use whatever number had been entered when the lens was first offered, and it often lacks the "NII" designation even though the lens they are offering for sale includes the focusing motor. All of which is a long way around to saying that there is no reliable way short of asking the seller to know whether the lens has a focusing motor. FWIW |
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#4 | |
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Hi, The information that follows was a direct excerpt from the SLR Gear lens review of the Tamron 90mm macro lens. Update 09/02/08: Tamron has announced that the Nikon mount version will be available with built-in AF motor (Model 272E) , for use with the Nikon D40, D40x and D60 SLRs. For more information go to SLRGear.com and look up the Tamron 90mm Prime macro lens Zig
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#5 | ||
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Quote:
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Last edited by TCav; Aug 31, 2012 at 3:47 PM. |
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#6 | |
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#7 | |
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![]() Zig
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#8 |
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"That probably means the 172E doesn't have the antireflective coatings on the rear-most element(s). "
Is this very important? BIM doesn't sound important since I have a D70. |
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#9 |
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One of the differences between film and digital, with respect to lenses, is that film isn't very reflective, while digital image sensors are very reflective. The light that isn't collected by the photoreceptors reflects back at the lens. If the lens' rearmost element does not have an antireflective coating, some of the light that reflects off the sensor toward the lens will reflect off the lens back toward the sensor. This can result in flare or ghosting.
Generally, it's only a problem in high contrast images. I've used many lenses, including macro lenses, that didn't have antireflective coatings on the rearmost element, and I've never had a problem. But it can and does happen.
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