Canon EOS-1Ds Mark III vs Sony A7S
Side-by-side used price and spec comparison. Lowest current prices pulled daily from the major used-gear sites.
Lowest now
$324
MSRP
$7,999
-96% vs MSRP
Well above the 90-day low
Today's price sits well above the recent low. Today's price runs 30% above the 90-day low of $249 (seen Jul 27, 2026). 4% of the $7,999 MSRP. Prices have been steady this month.
Lowest now
$304
MSRP
$2,498
-88% vs MSRP
Well above the 90-day low
Today's price sits well above the recent low. Today's price runs 22% above the 90-day low of $250 (seen Sep 20, 2026). 12% of the $2,498 MSRP. Prices are up 3.4% over the last 30 days.
Specs side by side
| Canon EOS-1Ds Mark III | Sony A7S | |
|---|---|---|
| Brand | Canon | Sony |
| Family | Canon EOS-1D | Sony Alpha |
| Category | body | body |
| Body type | DSLR | Mirrorless |
| Mount | Canon EF | Sony FE |
| Sensor | Full Frame | Full Frame |
| Sensor family | Canon FF 21MP CMOS (1Ds III) · 21.1MP full-frame CMOS | — |
| Megapixels | 21.1 MP | 12.2 MP |
| Autofocus | Phase Detection | — |
| IBIS | — | — |
| Weather sealed | — | Yes |
| Max video | — | — |
| Max native ISO | — | — |
| Body weight | — | 489 g |
| Dimensions | — | — |
| Body material | — | — |
| Released | 2007-11-30 | 2014-07-01 |
| Discontinued | — | — |
| Status | discontinued | discontinued |
| MSRP | $7,999 | $2,498 |
| Current low | $324 | $304 |
| vs MSRP | -96% | -88% |
Both cameras appear in
Curated best-under lists where both of these qualify today.
The verdicts above describe price timing. They don't tell you which camera fits your shooting style. See /methods for how we normalize seller conditions and compute the deal score.