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The Laowa 7.5mm f/2 is ...


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#1 Klaus

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Posted 03 February 2017 - 06:48 AM

... on da way to da lab.


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#2 wim

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Posted 03 February 2017 - 12:43 PM

Looking forward to that :).

 

The fastest glass I have currently at that FL is F/4 (the Panny 7-14) :), and I wasn't planning on getting the Oly F/2.8 zoom for this FL. A fast prime does soound attractive, however, although I would prefer somewhere around the 6mm mark :).

 

Kind regards, Wim



#3 Rover

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Posted 03 February 2017 - 06:22 PM

One of those lenses that make one think "have the producers gone bananas now..." :) Hopefully the quality is on the level, even though personally I'm expecting a less than thrilling sharpness curve at wide apertures...



#4 toni-a

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Posted 03 February 2017 - 08:07 PM

Let's be practical, at 7.5mm you are not looking for shallow DOF, for me at least most important is sharpness throughout the frame, and how it handles flare and of course how it renders colors and maintains good contrast, most important at medium apertures.
Of course f2.0 is a welcome addition nonetheless.

#5 wim

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Posted 03 February 2017 - 09:01 PM

F2.0 makes focusing a lot easier. And you may need it for dimly lit environments.

It is not so much about shallow DoF, as about having 2 stops more light when and if required.

 

Kind regards, Wim



#6 toni-a

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Posted 03 February 2017 - 10:21 PM

F2.0 makes focusing a lot easier. And you may need it for dimly lit environments.

It is not so much about shallow DoF, as about having 2 stops more light when and if required.

 

Kind regards, Wim

Well that's what I meant by welcome addition, however I was avoiding another lengthy discussion about equivalence and I don't want to be the one who would open such a can of worms



#7 wim

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Posted 04 February 2017 - 12:46 AM

Well that's what I meant by welcome addition, however I was avoiding another lengthy discussion about equivalence and I don't want to be the one who would open such a can of worms

 

You just did ;). <ROFL>

 

Kind regards, Wim



#8 Brightcolours

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Posted 04 February 2017 - 10:28 AM

Equivalence is not a can of worms, just a basic understanding op optics and physics  ;)

 

In equivalence terms, this lens is equivalent to a 7.5 x 2 = 15mm, 2 x 2 = f4 lens on FF 135 format, and equivalent to a 7.5 x 1.5 = 11mm, 2 x 1.5 = f3 lens on 1.5x crop APS-C format. 

 

Just a can of common sense  :lol:



#9 toni-a

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Posted 04 February 2017 - 02:30 PM

Equivalence is not a can of worms, just a basic understanding op optics and physics ;)

In equivalence terms, this lens is equivalent to a 7.5 x 2 = 15mm, 2 x 2 = f4 lens on FF 135 format, and equivalent to a 7.5 x 1.5 = 11mm, 2 x 1.5 = f3 lens on 1.5x crop APS-C format.

Just a can of common sense :lol:


Sorry Wim, believe me that was not intentional.




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