The lens that stays on the camera, and its aperture tells you how it was built
The standard zoom is the lens that lives on the camera, and its specification says more about how it was built than any review. The focal range covers a moderate wide angle through to a short telephoto, and how that range frames depends on the sensor format the lens was computed for — the engraved millimeters never change, but the part of the image circle a given sensor takes out of them does. The maximum aperture is where this shelf divides in two. A lens holding one value across the whole range is built around that promise and is larger, heavier and dearer for it; a lens quoted with two values opens wider at the short end and closes as the barrel extends, and it is the second figure that decides what it can do indoors. Stabilization, when it is in the lens, is quoted in stops under a named protocol and may or may not combine with stabilization in the body. The filter thread in millimeters is the number that decides which filters already owned still fit, and a lens whose front element rotates while focusing makes a polarizer tiresome. Then minimum focus distance, the maximum magnification that follows from it, sealing claims, and the published weight and length. We compare mount and format, focal range, maximum aperture at both ends, stabilization, filter thread, minimum focus, sealing and weight.
Sony E, APS-C · 18-50mm · constant f/2.8 · Contemporary line · small and light · in-camera aberration correction
A small, constant-f/2.8 standard zoom for Sony APS-C cameras, with 1,733 ratings at 4.7 stars, sold by Focus Camera for about $499.
Best for: Sony APS-C owners who want a brighter everyday zoom than the kit lens.
≈ $499
Canon RF mount, APS-C · 18-150mm · f/3.5 at 18mm, f/6.3 at 150mm · optical IS up to 4.5 stops, 6.5 with IBIS bodies · lead-screw STM · Dynamic IS for video
Canon’s all-in-one zoom for its APS-C RF bodies, from 18 to 150 mm with stabilization rated up to 4.5 stops, sold by Amazon.com for about $569.
Best for: Owners of a Canon EOS R50, R10 or R7 who want one lens for travel.
≈ $569
Sony E, APS-C · 18-105mm power zoom · constant f/4 · Optical SteadyShot · 72mm filter · 7 blades · two ED and three aspherical elements
A Sony G power zoom for APS-C with a constant f/4 aperture and optical stabilization, popular for video, sold by Amazon.com for about $748.
Best for: Sony APS-C video shooters who want smooth power zooms and steady exposure through the range.
≈ $748
18-150 mm with up to 4.5 stops of IS.
f/2.8 at both ends in a small body.
f/3.5-6.3 means f/6.3 at the long end, which decides low-light use.
Exposure stays steady while zooming.
If your body lacks it, yes.
A motor-driven zoom for smooth video.
They are APS-C lenses.
About 27-75 mm equivalent on Sony APS-C.
Read both apertures, then decide between range and brightness.
Only values stated by four references in five open a column. A sparse column sets silences against each other, not products.
| Model | Price | Aperture | Focal range | Mount | Stabilization |
|---|---|---|---|---|---|
| Sigma 18-50mm F2.8 DC DN Contemporary (Sony E) | $499 | f/2.8 at both ends | 18-50 mm | Sony E, APS-C (DC DN) | None in the lens; relies on the body |
| Canon RF-S 18-150mm F3.5-6.3 IS STM | $569 | f/3.5 at 18 mm, f/6.3 at 150 mm | 18-150 mm, an 8.3× zoom | Canon RF, designed for APS-C; full-frame EOS R bodies crop automatically | Up to 4.5 stops; up to 6.5 stops with bodies that have IBIS, per Canon |
| Sony E PZ 18-105mm F4 G OSS (SELP18105G) | $748 | f/4 at both ends; minimum f/22 | 18-105 mm (27-158 mm equivalent, per Sony) | Sony E, APS-C | Optical SteadyShot (OSS) |
Specifications: manufacturer sheets for photo equipment and the matching Amazon product pages. Prices and availability: Keepa. Every figure in this table names its source.
Most recent revision in this category: November 2, 2026.
Each amount in a write-up is what the listing showed when that page was written. The figure next to the product is pulled in as you read, and it is the one that counts.
