Linked Questions

2
votes
1answer
982 views

What is the difference between the 18-55mm Nikon kit lens and the Nikon Nikkor Lens ‑ 35 mm ‑ F/1.8 ‑ Nikon F? [duplicate]

What advantages will a 35mm lens will give me if I already owe an 18-55mm. Isn't the 35mm somewhat included in the other one? It may be a silly question, but I am new in photography and trying to ...
121
votes
7answers
12k views

What is bokeh, exactly?

I understand that "bokeh" refers to out-of-focus areas of an image — but there is obviously more to it than that. What does the term mean exactly? How well is bokeh really understood? Is it purely ...
65
votes
9answers
7k views

Why do some lenses cost 10 times as much when the specs are very close?

For example, a Canon 50mm f/1.8 lens is about US$110, while another Canon 50mm f/1.2 lens is about 14 times as expensive, at about $1450. Is the 1.8 or 1.2 the main reason for the price difference? ...
49
votes
3answers
7k views

What image-quality characteristics make a lens good or bad?

When reading lens reviews on the Internet, I often find subjective statements about the image quality that a lens produces, such as "good contrast" or "sharp". The problem is that I don't think I am ...
48
votes
3answers
389k views

What does STM mean on a Canon lens?

The Canon EF 40mm f/2.8 has a designation of STM on the lens. What does this mean? What are the advantages of having it and does it replace an older technology? We have a terminology thread that ...
34
votes
6answers
3k views

What is the definition of a “prime lens”?

There are many discussions of differences between prime, zoom and macro lenses. I have not heard about prime lenses until recently. Could someone explain what exactly a prime lens is? Is it ...
33
votes
4answers
21k views

What is a macro lens?

I've read a few threads on here that mention some elementary descriptions of macro lenses and found some marketing fluff in the box for my Canon about them as well, but being a complete novice I was ...
16
votes
5answers
71k views

What is USM, and what are its pros and cons?

My Canon lenses have the designation USM on them, which I assume is for the same reason that they say "Ultrasonic". What does this mean, and why or why do I not want it?
16
votes
4answers
34k views

Why prefer the 18-55mm and 55-250mm lenses vs 18-200mm?

There seems to be a preference for to have the 18 mm - 55 mm 55 mm - 250 mm lenses, but no mention of why they're better than a single 18-200mm. Could someone please explain why the two separate ...
31
votes
2answers
6k views

What is a pancake lens?

I've read about a "pancake lens" but don't really understand what that means. What the pros and cons of having a pancake vs. another type of lens? I'm thinking of getting a Panasonic Lumix DMC-GF1 ...
19
votes
2answers
9k views

What is the benefit of an internal focus lens?

The "IF" in Pentax DA★ 200mm f/2.8 ED (IF) SDM stands for "Internal Focus". I know what this means: the lens doesn't change in size as I focus. (And it's true; it doesn't.) What's the point of this, ...
11
votes
6answers
495 views

On smaller prints, will a high-quality zoom lens provide near equal image quality compared to primes?

Let's say I shoot with Canon EF 35mm f/1.4L, Canon EF 50mm f/1.4, and a Canon EF 85mm f/1.8. Can these 3 primes be replaced with a Canon EF 24-70mm f/2.8 for the convenience of not needing to change ...
9
votes
4answers
14k views

Which impacts the speed of focusing more, the lens or the camera body?

Speed is the larger concern, but a description of accuracy would be appreciated as well.
12
votes
1answer
8k views

What are the different sensor sizes used in DSLRs?

What do the different sensor size names used by Canon mean? There's APS-C, APS-H and full format? What are the standards used by Nikon, Pentax, Sony, Olympus, Panasonic, and others? What are the ...
0
votes
2answers
16k views

What is difference between a 18-55mm and 18-105mm lens? [duplicate]

So what I meant to say is that what exactly is the difference between 18-55mm lens (in general, not specific to any company) and a 18-105mm lens. To me 18-105mm lens looks much better (not considering ...