Linked Questions

0
votes
3answers
367 views

Which image stabilization lens to get to replace canon kit lens?

I came into a Canon Rebel T7 with the 18-55mm kit lens without image stabilization. Many of the photos I take are indoors with low light (museums, indoor architecture) and often with my earlier ...
2
votes
4answers
1k views

How to know whether a Tamron lens is compatible with Canon EOS 60D?

I am trying to find a compatible lens for my Canon EOS 60D. A Tamron lens is my preferred option as I used to have one for my old Minolta when I used 35mm film. The motor in my EOS 60D is a USM. I ...
1
vote
1answer
116 views

Is USM lens suitable for static photos on canon 550d?

I am looking to upgrade the lens on my canon 550d. An EF-S 18-135mm f/3.5-5.6 seems to be an all rounder for my needs. But i am thinking if there is any compatibility issue or such with a USM compared ...
1
vote
3answers
2k views

Is there any adapter to mount older Canon EF lenses on a newer Nikon DSLR? [duplicate]

Before the question, here’s some background story: My uncle just brought me his old Canon EOS 100 that he cannot use anymore because there is nowhere where he can develop photos. I am not going to use ...
193
votes
15answers
129k views

What do all those cryptic number and letter codes in a lens name mean?

When looking at a lens name, there are a lot acronyms describing its features (often specific to the manufacturer). Examples, Nikon: Nikon AF-S DX 16-85mm VR f/3.5-5.6G IF-ED Nikon AF-I 600mm f/4D ...
1
vote
6answers
2k views

What would be a better lens, 40 or 50mm prime, for walk around? [closed]

I have a Canon EOS Rebel T5i/700D body, an EF-S 18-55 wide angle lens, a 70-300mm telephoto lens, and the kit lens that came with the body. I am still building my lens collection and am looking for ...
1
vote
2answers
155 views

Can I use a polarizing filter on a non-STM lens?

Almost every single review of an STM lens mentions the following: The front end doesn't rotate while focusing, which is great for using a polar filter. Does this mean that I can't use a ...
48
votes
3answers
393k 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 ...
1
vote
1answer
12k views

What is the difference between STM and USM in a lens? [duplicate]

What is the difference between STM and USM in a lens? What's the major difference? Is this only for a Canon user, or Nikon, or else DSLR also having same types lenses? What should I choose for day-...
0
votes
1answer
796 views

Does a Ring-Ultrasonic EF-S lens require power to manually focus? (using with adapter)

Would the manual-focus-ring of a ring-ultrasonic EF-S lens (in particular the 17-55mm f/2.8 IS USM lens) focus even when the electronics are not working? Or would it require power to allow manual ...
16
votes
5answers
73k 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?
2
votes
0answers
437 views

What are the different types of auto-focus motor and how do they compare?

What is the difference of ultrasonic motor, stepper motor, and electromagnetic drive? Which one of these are lens-based or screwdrive? What are the advantages of lens-based servo over screwdrive and ...