Panasonic G6 mini review from full frame user

Started Sep 7, 2013 | Discussions thread
T3 Forum Pro • Posts: 20,346
Re: pursuit of sameness

Advent1sam wrote:

You probably wouldn't use the Canon wide open? you use it at f2 because that's where it sharpens-up sufficiently to give good results? The Pana's are usable wide-open but you'll have an equivalent of f2 vs 2.8/f3, so still a full stop adavantage over m43 in dof, but we all knew this already

No, I use the Canon 50/1.4 wide open all the time. There's also the Sigma 50/1.4. Excellent lens. My 35/1/4L is also very sharp wide open. The notion that you can't use FF lenses wide open, but that you can with m4/3 lenses, is a fool's argument. Sorry to put it to you that way. But you're just grasping at straws.

But even with the Canon 50/1.4 stopped down to f/2, you're still getting shallower DOF than a Panasonic Leica 25/1.4 wide open.

Canon 50/1.4, at f/2, focused at 10 ft = 1.45 ft DOF

Panny Leica 25/1.4, focused at 10 ft = 2.07 ft DOF

So even your false claim that you have to use the Canon lens stopped down is a hollow victory, because even stopped down, the Canon on FF is still delivering better subject isolation.

I think we m4/3 users simply have to accept the fact that the optical physics of using shorter focal lengths on m4/3, compared to longer focal lengths on FF, to get the same equivalent focal lengths, results in m4/3 being at a disadvantage when it comes to shallow DOF and subject isolation.  That's just the way it is.  That's simply what happens when you're using lenses that are half the focal length of FF.

If you want to see a lot of subject isolation with FF, go look at Scott Schuman's The Sartorialist  website.  He's the guy who basically popularized the street fashion photo blog, where someone goes out on the street, shooting what people are wearing.  He shoots with a Canon 5D, and a 50/1.4, usually always wide open.

Since he's shooting on the street, with very busy backgrounds, subject isolation is very important.  And he has no problem doing it.  His blog is full of images showing it.

Go look at the full size images.  With the shooting distance he's shooting at (far enough back to get a full body shot with a 50mm lens), and to still get the excellent subject isolation and defocused backgrounds he's getting, there's just no way you can do that with m4/3.  From that same distance, with a 25mm lens on m4/3, you'd be getting much more DOF, and the backgrounds would be far sharper.  Great if that's what you want, but bad for trying to get the subject to stand out from the background.

And yes, Schuman is getting sufficient sharpness from his Canon 50/1.4 wide open.

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