Pentax K-5 vs Sony Alpha SLT-A55
Side-by-side used price and spec comparison. Lowest current prices pulled daily from the major used-gear sites.
Lowest now
$184
MSRP
$1,599
-88% vs MSRP
Well above the 90-day low
Today's price sits well above the recent low. Today's price runs 139% above the 90-day low of $77 (seen Sep 23, 2026). 12% of the $1,599 MSRP. Prices have been steady this month.
Lowest now
$139
MSRP
$749
-81% vs MSRP
Prices are rising
Used prices have been rising recently. Prices are up 183.7% over the last 30 days. The 90-day low was $49, $90 below today. Currently 19% of the $749 MSRP.
Specs side by side
| Pentax K-5 | Sony Alpha SLT-A55 | |
|---|---|---|
| Brand | Pentax | Sony |
| Family | Pentax K-5 | Sony Alpha A |
| Category | body | body |
| Body type | DSLR | DSLT |
| Mount | Pentax K | Sony A |
| Sensor | APS-C | APS-C |
| Sensor family | — | — |
| Megapixels | 16.3 MP | 16.2 MP |
| Autofocus | — | — |
| IBIS | Sensor-shift | — |
| Weather sealed | Yes | — |
| Max video | — | — |
| Max native ISO | — | — |
| Body weight | — | — |
| Dimensions | — | — |
| Body material | — | — |
| Released | 2010-09-20 | 2010-08-24 |
| Discontinued | — | — |
| Status | discontinued | discontinued |
| MSRP | $1,599 | $749 |
| Current low | $184 | $139 |
| vs MSRP | -88% | -81% |
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.