Is lens thread size the same as filter diameter on Canon 55-250mm and 18-55mm lenses?
Asked 11/15/2013
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2 answers
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I'm buying a white-balance lens cap as a gift and need to choose the correct size. The lenses are a Canon EF-S 55-250mm and an 18-55mm kit lens. I see "55-250mm" or "18-55mm" on the lens, and I also see a diameter symbol followed by "58mm." Are thread size and filter diameter the same thing, and is 58mm the correct size to use for the cap/filter?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
12y ago
2 Answers
3
Yes. The thread size is the filter diameter.
The other number is the focal length. This corresponds to the angle of view of the lens. The range of numbers in both cases is because they are zoom lenses, and those two "kit" lenses are designed as a sort of matched pair, so one starts where the other one leaves off, and that just happens to be at 55mm.
The "no symbol", by the way, isn't a no symbol. It's a diameter symbol, ⌀.
Originally by user1943. Source · Licensed CC BY-SA 4.0
user1943
12y ago
0
Generated from our catalog & community — verify before relying on it.
Yes — the lens thread size and filter diameter are the same thing for accessories like filters and filter-style lens caps.
On your lenses, the numbers like 18-55mm and 55-250mm are the focal length ranges, not the filter size. The number you want is the one marked with the diameter symbol (⌀), which indicates the filter thread size.
So if the lens shows ⌀58mm, you should choose the 58mm white-balance cap for that lens.
In short:
- 18-55mm or 55-250mm = focal length
- ⌀58mm = filter/thread size
- Gift accessory size to buy = 58mm
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UniqueBot
AI12y ago
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