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Re: [OM] Damn, I'm excited!

Subject: Re: [OM] Damn, I'm excited!
From: Moose <olymoose@xxxxxxxxx>
Date: Mon, 9 Jul 2018 13:51:41 -0700
On 7/9/2018 12:40 PM, WayneS wrote:
The Sony 70-300/4.5-5.6 is not that much heavier than the 24-105.

The Sony 24-105/4 is rather large and heavy, compared to the 24-120 mm eq. PLeica 12-60 for µ4/3, but significantly lighter than the FF Canon 24-105/4.

What I like is the close focus on it means a macro lens is not required for 
most of the things I would use macro for.

Close focus and "macro" are interesting things between formats. This Sony lens has a max mag. of 0.3x, the same as the Pleica 12-60. However, if I shoot something 10 mm in diameter @ MM on both, then print them @ 8x10", the image from the Sony is ~26.5 mm and that from the µ4/3 is ~47 mm in diameter.

The effective magnification of the smaller format lens/sensor is about 175% 
that of FF.

Then there's another thing about lens design that's not obvious from basic specs. At which FL does max magnification happen on the Sony? A cursory search didn't tell me.

I have both PL 12-60 and Oly 12-100 zooms. Both have a max mag. of 0.3x. BUT, the PL is at 60 mm and for the Oly it's @ 12 mm. Doesn't sound too bad, right? Closest focus is 150 mm. but wait, there's more! From focal plane to physical front of lens is 138 mm. But wait, yet more; with hood on, the long 'petal' is 166 mm from film plane. In other words, closest focus and max. magnification occur INSIDE the hood!

From a previous Moose Whine:
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. . . This afternoon, there were a couple of shots I wanted to take. I grabbed the camera, went out and shot, without even noticing which lens was on the body.

. . . so I went to take a shot [of a flower].

Eeek! I've got the 12-100, and can't get much magnification without throwing  the shadow of the honkin' great front of the lens on the subject. Then there's a dahlia starting to bloom, and a cute bud, just starting to burst open, right there. Same problem, but I take a shot.

Run in the house, change lenses, return to the scene of the crime. I get both shots the way I want them. <http://www.moosemystic.net/Gallery/tech/Lenses/12-60%20vs%2012-100/12-60v100.htm>

Yes, I believe Oly, that I could, theoretically, get the same size image as with the PLeica. And maybe if I take off the lens hood, and maybe use a tripod to get close enough and hold the lens there, maybe some fill light, or a different time of day . . . but I just couldn't get the shots, standing there with camera in hand and subjects ready. I believe the shading of the front of the bud with the Oly is lens shadow.

Practical upshot is that the Oly doesn't do a kind of shooting that's important to me without fussing at least with an auxiliary lens or tube. The PLeica just does it, no fuss, no bother, on to the next thing.

Irritated Moose
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The same problem existed with some film days "macro" zooms.

Someday I will learn how to take photos and share something.

Sounds like fun!

Bated Breath Moose

--
What if the Hokey Pokey *IS* what it's all about?
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