Don't overlook Minimum Focusing Distance for Lenses

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Philnw2 Veteran Member • Posts: 3,110
Don't overlook Minimum Focusing Distance for Lenses

One of the big things I love about the Tamron 28-75 f2.8 is its Minimum Focusing Distance. Its 7.4 inches from the Sensor plane forward. This places the closest subject one can focus on as just about smack dab in front of the outer lens element - but not touching

I'm sure a macro lens could do even better, but it turns out its very handy to have this MFD built-right into the Tamron lens.

So this AM, i found this article on the internet:

and i more or less copied their title.

So i checked some of my primes on BH for MFD - BH lists this dim.  under their Spec page for each lens

FE 28mm  11.4"

FE 55mm  19" or so

To be fair- the MFD goes up on the Tamron as the zoom FL increases, but still its pretty good.

I get pictures like this from this MFD:

Close Focus from Tamron at f2.8

and this:

Close Focus from Tamron 28-75 at f2.8

There must be a drawback for lens designers putting the close focus feature into a lens - anyone know what that con is??  I'm just curious.

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Phil B

 Philnw2's gear list:Philnw2's gear list
Sony a7R II Canon EF 85mm f/1.8 USM Sony FE 55mm F1.8 Sony FE 28mm F2 Canon EF 100mm f/2.0 USM +4 more
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