Linked Questions

-2 votes
1 answer

Panasonic/Leica 15mm 1.7 vs DJI 15mm 1.7 [duplicate]

Is the DJI as sharp as the Leica on a OMD E-10 Mark II ?
T Clem's user avatar
  • 19
0 votes
1 answer

How different lenses affect photo quality? [duplicate]

Suppose I have these two lenses: - Tamron SP 24-70mm f/2.8 Di VC USD G2 Lens - Tamron 28-300mm F/3.5-6.3 Di VC PZD And suppose I have used them both on the same full frame camera, in the same tripod ...
Anas Aldera's user avatar
62 votes
5 answers

Is there development in the world of lenses?

Now, I'm not an expert, so if this post makes you laugh, you're welcome. Still, as far as I know there are basically two components that determine the potential quality of a camera's photos: Sensor ...
Bart van Heukelom's user avatar
38 votes
4 answers

How do I interpret an MTF Chart?

As part of how Canon (and other lens makers) give technical information about their lenses, they supply an MTF (Modulation Transfer Function) chart. How do I read and interpret what the chart is ...
Alan's user avatar
  • 18.7k
13 votes
3 answers

Do convex lenses make parallel light rays of different wavelength converge to different points?

I'm starting to study cameras and lenses. By reading explanations and watching videos on convex lenses, I learnt that they make parallel light rays converge to a single point called the focal point. ...
Gabriele Scarlatti's user avatar
19 votes
3 answers

What is the cause of this non-uniform bokeh effect?

A friend of mine is thinking of buying a used medium-format film TLR camera (a Mamiya C330), and he showed me some of the test shots he'd taken with it. I was struck by the curiously non-uniform ...
Ilmari Karonen's user avatar
11 votes
4 answers

Do I need other camera lenses if I have an 18-200mm or other super-zoom?

I wanted to ask that once you have purchased a lens of say 18-200mm, then is it required to purchase other lenses — say 24-70mm, 24-105mm, 18-105mm, 28-135mm,etc. Does 18-200mm lens satisfy all the ...
maytray pandit's user avatar
20 votes
1 answer

What does the word "Contemporary" mean in a lens description?

What's the significance of the word "Contemporary" in a lens description? Example from Amazon: Sigma 150-600mm 5-6.3 Contemporary DG OS HSM Lens. I've also seen this on Does anybody ...
Jamie Cox's user avatar
  • 388
13 votes
4 answers

What does IQ mean?

I see a lot of questions which mention IQ. The only meaning I know outside photography is "intelligence quotient" but obviously IQ has some other meaning here. IQ is used for example in "Lens with ...
Esa Paulasto's user avatar
  • 6,004
11 votes
4 answers

How many optical aberration types are there in lenses? And what are they?

Everyone hears something about chromatic aberration but are there any other types? What causes them?
spinodal's user avatar
  • 753
8 votes
4 answers

Why is Nikon 1.4g better when Nikon 1.8g is sharper?

I am new to photography (just 3 to 4 months of experience) and I am looking to buy a new lens (either 35mm or 50mm, but mostly 35mm because I have already decided Sigma 85mm f/1.4 DG HSM Art Lens for ...
Prem Ramman's user avatar
11 votes
4 answers

How much does 1 mm get you in a wide-angle lens?

I'm looking at a Canon 17-40 mm wide angle lens, and I don't understand why anyone would buy it. EFS18-55mm II is the standard Canon 18-55 mm lens that DSLRs come with, and it seems almost as ...
Vlad the Impala's user avatar
10 votes
3 answers

What is considered high quality bokeh?

What is considered high quality bokeh and what is considered low quality bokeh?
Julian's user avatar
  • 499
18 votes
4 answers

Why are superzoom lenses small but giant telephoto lenses huge?

This week I've read two news stories about two different camera lenses that can magnify things that are very far away. The first is the Nikon Coolpix P900, which is a point-and-shoot camera that ...
Jeffrey's user avatar
  • 183
17 votes
4 answers

What is the difference between perspective distortion and barrel or pincushion distortion?

I've heard of: perspective distortion barrel distortion pincushion distortion mustache distortion What are these different types of distortion, and how do they relate? What causes them, and can they ...
mattdm's user avatar
  • 143k

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