On 4/13/2020 1:35 PM, Philippe wrote:
Thanks I had one such - but my original question remains, sorry.
Well, I might as well also die ignorant :-)
Le 13 avr. 2020 à 21:03, Jan Steinman <Jan@xxxxxxxxxxxxxx> a écrit :
From: Philippe <photo.philippe.amard@xxxxxxxxx>
FL eq 100-400 - do you really shoot macro with that FL?
One of the great things about that lens is a minimum focus of 1.2 metres. I
don't know what reproduction ratio that yields, but it does give you near-macro
capability.
Brief answer for me. Yes, I do shoot macro, with even longer FLs.
Less brief raises a question, and any answer requires some definitions:
Question: What do you mean by Macro?
1. Many zooms of the 35 mm film era proudly wore the label "Macro" with mag. of 0.25x, or repro ratio of 1:4. A lot of
purists felt macro started at 1:2, 0.5x.
2. The lens that started this has a mag. of 0.21x. That sounds pretty low. But, it's for a 4/3" sensor. If I print equal
size FF and 4/3 sensor shots of the same subject, filling the height of the film/sensor with it, the apparent
magnification is the same, but the images on film/sensor are of much different sizes, FF ~ twice 4/3".
Thus, in a practical way, 0.21x on 4/3 is equivalent to 0.42x on FF and
qualifies as macro by some definitions.
I often shoot with a 400 mm lens and achromatic C-U lens. At closest focus, it covers a subject area of 40x30 mm, which
is FF the eq. of 0.86x, or 1:1.16. As this magnification is considerably greater than that of the OM 50 mm macro lenses,
it is certainly macro.
As to why I do so,perhaps this photo is a good answer.
<https://photos.app.goo.gl/BgxKymwHzWXRiKQ68>
Cropped horizontally, but not vertically. I take quite a lot of photos of modest to tiny creatures that would flee if
approached at the working distance of conventional FL macro lenses.
Or perhaps this shot? <http://zone-10.com/tope2/main.php?g2_itemId=20427>
For tiny, un-moving things, I go conventional, Oly Macrophoto Stand VST-1 and either OM 20/2 and 38/2.8 on FF A7 or Oly
60/2.8 macro on E-M5 II, in 60 MP-ish HR Mode.
Long and Short of It Moose
--
What if the Hokey Pokey *IS* what it's all about?
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