Everything below is read off a listing before any money moves. None of it needs a review.
Read the aperture pair, and read the second number
A zoom is quoted at two ends — f/3.5-6.3 on a typical kit lens. The first applies at the wide end, the second at full extension, and they are two and a half stops apart. Indoors and at dusk, the second is the figure that decides what the lens can still do.
A lens quoted with a single figure does not zoom, and that single number applies throughout: the primes in this catalogue print f/1.8 and f/1.4, three or more stops beyond a kit zoom’s long end.
Settle the mount before anything else
The mount is proprietary and it is what ties you to a system. Nine of the titles here print EF, six EF-S, six E-Mount, five RF, four FE, three RF-S, with single titles for Z and MFT — eight designations, eight owners, no shared document. Adapters can move a lens onto a body with a shorter flange distance and never the other way, which is subtraction rather than engineering.
Know which sensor format you are buying
Twelve titles here print APS-C and eleven the full-frame equivalent. The format changes framing for a given engraved focal length and depth of field for a given aperture. It is a dimension, not a grade, and the equivalent focal lengths people quote are a division rather than a measurement.
Note the filter thread, because it belongs to the lens
Only four of the 266 products here print a filter thread in their title, and those four carry three different diameters — 52, 58 and 67 mm. It is a property of the lens, not of the camera, so two lenses for the same body routinely differ.
Set four things up before the first outing
Date and time, the file format, the card formatted in the camera, and the firmware release note read rather than the version number chased. Each costs a minute; each costs an outing if it is wrong.
Spend what remains on light rather than on the body
A support and a wider aperture change pictures in ways a more expensive body does not. Both are published as figures you can compare, which is more than can be said for most of what a first buyer is told to want.
What people ask before they commit
Is the kit lens worth keeping?
For learning where you actually stand, yes — it covers a range, and the focal length recorded in each file tells you which lengths you use. Its weakness is published on the barrel: a pair such as f/3.5-6.3, whose second figure applies at full extension and is two and a half stops darker than the first.
Body first or lens first?
Lens first, once the mount is chosen, because a lens outlives several bodies within one system. The mount designations in this catalogue belong to eight owners and are shared across each maker’s own formats, so glass bought today still fits a later body of the same system.
Last reviewed 13 September 2026