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Lenses quality purchasing

You live in the era of: Reviews. Learn a bit about Lenses. Focal length, aperture, distortion. Define your objective for the lens. Portrait, landscape, night photography, macro. Narrow your options....
Rafael's user avatar
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-1 votes

Canon 50mm f1.8 VS EF-M 15-45 mm

May be not fully answer to the question, but shortcommings of EOS M 15-45mm can be corrected by Canon DPP, giving fully acceptable photo quality.
Jan Hopfinger's user avatar
-1 votes

Which of these lenses to choose for a studio project?

If you want the sharpest images: turn off image stabilization use an f/stop one down from the largest aperture put the camera on a tripod use flash instead of constant light use the fastest flash ...
David Bunnell's user avatar
4 votes
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Which of these lenses to choose for a studio project?

There's really never an objective "best" choice, it all depends on what you're attempting to accomplish. My goal is to achieve the sharpest and most detailed images possible, likely ...
inkista's user avatar
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What are the theoretical minimum and maximum apertures?

Since this is 2 questions (narrowest aperture, and widest aperture, I'm answering this in 2 answers Widest Aperture (fastest f-number) TL;DR: For a photographic camera and lens in air, the fastest ...
scottbb's user avatar
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How does the Leica R Telyt-R 250 mm f/4 compare to a more modern lens?

I’ve used my 250mm f4 for many years, first on a Leicaflex SL, then the R8. Very sharp images, even wide open as I use it a lot at village cricket matches on the village green with a monopod. I ...
David Murray's user avatar
1 vote

What are the theoretical minimum and maximum apertures?

Since this is 2 questions (narrowest aperture, and widest aperture, I'm answering this in 2 answers Narrowest Aperture For imaging systems in non-scientific applications (i.e., cameras taking ...
scottbb's user avatar
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1 vote

What are the theoretical minimum and maximum apertures?

Maximum aperture f/number of conventional lens is 0.35 = SQRT(2)/4, one step faster than 0,5. Not zero, not 0.5, not 0.33. Hope bloggers, commentators and wikipedia will learn that once and for all. ...
patta's user avatar
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Canon EF 40mm f2.8 consistently sharp across the frame?

Lenses are never consistently flat across the frame. Lenses are real products, results of lots of compromises. Manufacturers build them to have acceptable degradation for the intended audience and ...
Hugues's user avatar
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1 vote

What causes lens flare from stadium floodlights in my pictures?

What causes this Effect? The intensity of the light combined with the properties of the lens. All lenses scatter light to one degree or another. Under more even lighting conditions exposure can be ...
Michael C's user avatar
  • 175k
2 votes

What causes lens flare from stadium floodlights in my pictures?

Every light source is slightly scattered by any lens and you see point light source as a point on the photo only if it has normal brightness. Light sources with extreme brightness reveal that every ...
Euri Pinhollow's user avatar
1 vote

What causes lens flare from stadium floodlights in my pictures?

The job of the lens is to project an image of the outside world onto the surface of film or digital sensor. Light from the subject plays on the lens. About 95% traverses the lens and this light energy ...
Alan Marcus's user avatar
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