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Panasonic 35-100 f2.8 over Olympus 40-150 f2.8?

Started Dec 16, 2015 | Discussions thread
Chippy99 Senior Member • Posts: 2,182
Re: Mine is not soft at 100mm f/2.8.
1

daddyo wrote:

"And by the way (please don't be offended by this) what on earth is the point in trying to demonstrate sharpness by uploading a 1 megapixel 180k jpeg?

I could have taken that with an iPhone 2."

Well, because (and don't be offended by this) if an image looks sharp on my computer at 1MP @ 180kb it sure as heck isn't going to get fuzzy and soft if I include the original missing 8 MP to the image.

The prevailing notion that web sized images do not reflect the actual sharpness of an image just because pixels have been eliminated is absurd.

How on planet earth have you come to that bizarre and by the way, completely wrong conclusion???

OF COURSE a 1 Mpixel resized image cannot demonstrate how sharp the 16 Mpixel original is. How utterly baffling you should think it can!

Your suggestion that if the 1MP image is sharp, that the 16MP image must be sharp is completely wrong. We have NO IDEA how sharp the original is when looking at the resized image.

By way of example, here's two images taken with an E-M1 and 35-100 f/2.8, one at f/2.8 and the other at f/4. I have resized them, as you did:

Next one:

One is sharp, the other is not. But which is which?

Here's crops from the two:

and the other...

One is soft, the other is sharp.

EDIT: Actually I chose the wrong images - one of them was at 75mm, not 100mm.  But it matters not, the point is made.  The two resized images both look sharp.  The full size crops reveal that only one of them is.

 Chippy99's gear list:Chippy99's gear list
Sony RX100 Leica Q2 Olympus E-M1 Olympus M.Zuiko Digital ED 9-18mm F4.0-5.6 Olympus M.Zuiko Digital 45mm F1.8 +4 more
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