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Received my Tamron 17-70mm today...

Started 9 months ago | Discussions thread
Miguel-C
Miguel-C Senior Member • Posts: 2,321
Re: Received my Tamron 17-70mm today...
5

Dennis wrote:

Lettermanian wrote:

BeatX wrote:

Uhh.. That Tamron 17-70/2.8 is big! I mean it looks like similar size to any 24-105/4 FF zoom lenses (?)

A 2.8 lens is still a 2.8 lens in terms of light gathering, so there's not a direct comparison to a 24-105 f4.

You've been around here a long time (long enough to have read plenty about equivalence) you can't really believe that ?

Dennis, you are mistaking Depth of field  with light gathering. An F2.8 lens  will have the same light gathering ability on FF as on APSC. That's why these lenses are big.

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Cordial Regards

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