As well as being compared against other entry-level DSLRs, the Pentax K-S1 is also often compared to mirrorless, pro DSLRs and boutiques. The Pentax K-S1's top rivals come from Panasonic (such as the Lumix DMC-GX7 and the Lumix DMC-GF8) and Pentax (such as the K-70 and the K-50)

compared toEntry-level DSLR competitors

Generally, some of the advantages of the Pentax K-S1 compared to other entry-level DSLR competitors include: it has a slightly higher resolution screen (921k dots vs 460k dots), slightly larger viewfinder (0.63x vs 0.54x), has better image stabilization (sensor shift vs none), takes much higher resolution photos (21.1 MP vs 18 MP) and has higher quality type of viewfinder (pentaprism vs pentamirror).

However, on average it records higher quality movies (1080p @ 30fps vs 1080p @ 60fps), it's body is not weather sealed, doesn't have a screen which flips out, lacks and external mic jack and slightly fewer lenses available (113 lenses vs 220 lenses).

Pentax K-70

Pentax K-70
1 year newer
$595 (body only)
$672 - $715 18-55mm lens

Significant advantages of the K-70 (vs the K-S1)

  • Much higher true resolution: 24 MP vs 21.1 MP
  • Higher frame rate movies: 1080p @ 60fps vs 1080p @ 30fps
  • Weather sealed

Significant disadvantages of the K-70 (vs the K-S1)

  • Thicker: 2.9" vs 2.8"

common strengths of the K-70 and K-S1

  • Above average viewfinder size: 0.62x vs 0.63x
  • Both have pentaprism viewfinders: Pentaprism vs Pentaprism
  • Both use faster phase detection autofocus: Phase detection vs Phase detection

Canon Rebel SL1

Canon Rebel SL1
1 year older
$550 18-55mm lens

Significant advantages of the SL1 (vs the K-S1)

  • Significantly higher resolution screen: 1,040k dots vs 921k dots
  • Has a touch screen
  • Has an external mic jack

Significant disadvantages of the SL1 (vs the K-S1)

  • Much lower true resolution: 17.9 MP vs 21.1 MP
  • No image stabilization: None vs
    1. Sensor shift
  • Significantly smaller viewfinder: 0.54x vs 0.63x

common strengths of the SL1 and K-S1

  • Focus continuously recording movies
  • Both use faster phase detection autofocus: Phase detection vs Phase detection
  • Very small: Prosumer size (117×91×69 mm) vs Prosumer size (121×93×70 mm)

Pentax K-50

Pentax K-50
1 year older
$1,444 18-55mm lens

Significant advantages of the K-50 (vs the K-S1)

  • Weather sealed

Significant disadvantages of the K-50 (vs the K-S1)

  • Much lower true resolution: 16.2 MP vs 21.1 MP
  • Doesn't focus continuously recording movies
  • No built-in GPS

common strengths of the K-50 and K-S1

  • Above average viewfinder size: 0.61x vs 0.63x
  • Both have pentaprism viewfinders: Pentaprism vs Pentaprism
  • Both use faster phase detection autofocus: Phase detection vs Phase detection

Canon EOS Rebel T5

Canon EOS Rebel T5
6 months older
$337 18-55mm lens

Significant advantages of the Rebel T5 (vs the K-S1)

  • Significantly more lenses available: 220 lenses vs 113 lenses

Significant disadvantages of the Rebel T5 (vs the K-S1)

  • Much lower true resolution: 18 MP vs 21.1 MP
  • Much lower resolution screen: 460k dots vs 921k dots
  • No image stabilization: None vs
    1. Sensor shift

common strengths of the Rebel T5 and K-S1

  • Focus continuously recording movies
  • Both use faster phase detection autofocus: Phase detection vs Phase detection
  • Inexpensive: $337.37 vs $329.00

Pentax K-S2

Pentax K-S2
5 months newer
$551 (body only)
$1,176 18-50mm lens

Significant advantages of the K-S2 (vs the K-S1)

  • Weather sealed
  • Has a flip-out screen

Significant disadvantages of the K-S2 (vs the K-S1)

  • Much lower true resolution: 20 MP vs 21.1 MP

common strengths of the K-S2 and K-S1

  • Above average viewfinder size: 0.62x vs 0.63x
  • Both have pentaprism viewfinders: Pentaprism vs Pentaprism
  • Both use faster phase detection autofocus: Phase detection vs Phase detection

Pentax K-30

Pentax K-30
2 years older
$391 (body only)
$548 18-55mm lens

Significant advantages of the K-30 (vs the K-S1)

  • Weather sealed

Significant disadvantages of the K-30 (vs the K-S1)

  • Much lower true resolution: 16.1 MP vs 21.1 MP
  • No built-in GPS
  • Significantly larger: Prosumer size (130×97×71 mm) vs Prosumer size (121×93×70 mm)

common strengths of the K-30 and K-S1

  • Above average viewfinder size: 0.61x vs 0.63x
  • Both have pentaprism viewfinders: Pentaprism vs Pentaprism
  • Both use faster phase detection autofocus: Phase detection vs Phase detection

compared toMirrorless interchangeable-lens competitors

Generally, some of the advantages of the Pentax K-S1 compared to mirrorless interchangeable-lens competitors include: it has higher quality type of viewfinder (pentaprism vs none), has better image stabilization (sensor shift vs none), slightly higher maximum light sensitivity (51,200 ISO vs 16,000 ISO), can focus continuously while recording movies and slightly more lenses available (113 lenses vs 62 lenses).

However, on average it records higher quality movies (1080p @ 30fps vs UHD @ 30fps), slightly smaller viewfinder (0.63x vs 0.70x), doesn't have a touch screen, doesn't have a screen which flips out and is older (august 2014 vs february 2016).

Panasonic Lumix DMC-GX7

Panasonic Lumix DMC-GX7
1 year older

Significant advantages of the DMC-GX7 (vs the K-S1)

  • Has a touch screen
  • Has a flip-out screen
  • Significantly longer exposures: 60 seconds vs 30 seconds

Significant disadvantages of the DMC-GX7 (vs the K-S1)

  • Doesn't have a built-in focus motor
  • Has a digital viewfinder: Digital vs Pentaprism
  • Slower autofocus: Contrast detection vs Phase detection

common strengths of the DMC-GX7 and K-S1

  • Focus continuously recording movies
  • Many lenses available: 108 lenses vs 113 lenses
  • Each has a built-in flash

Fujifilm X-A3

Fujifilm X-A3
2 years newer
$489 16-50mm lens

Significant advantages of the X-A3 (vs the K-S1)

  • Has a touch screen
  • Has a flip-out screen
  • Significantly smaller: Mid size (117×67×40 mm) vs Prosumer size (121×93×70 mm)

Significant disadvantages of the X-A3 (vs the K-S1)

  • No viewfinder: None vs Pentaprism
  • Doesn't have a built-in focus motor
  • Slower autofocus: Contrast detection vs Phase detection

common strengths of the X-A3 and K-S1

  • Inexpensive: $488.89 vs $329.00
  • Each has a built-in flash

Sony Alpha A6000

Sony Alpha A6000
6 months older
$379 - $498 (body only)
$479 - $598 16-50mm lens

Significant advantages of the A6000 (vs the K-S1)

  • Better image stabilization:
    1. Lens
    vs
    1. Sensor shift
  • Has a flip-out screen
  • Has an external mic jack

Significant disadvantages of the A6000 (vs the K-S1)

  • Doesn't have a built-in focus motor
  • Has a digital viewfinder: Digital vs Pentaprism
  • Slower autofocus: Hybrid detection vs Phase detection

common strengths of the A6000 and K-S1

  • Focus continuously recording movies
  • Inexpensive: $379.00 vs $329.00
  • Each has a built-in flash

Panasonic Lumix DMC-GF8

Panasonic Lumix DMC-GF8
1 year newer

Significant advantages of the Lumix DMC-GF8 (vs the K-S1)

  • Has a touch screen
  • Has a flip-out screen
  • Significantly smaller: Compact (107×65×33 mm) vs Prosumer size (121×93×70 mm)

Significant disadvantages of the Lumix DMC-GF8 (vs the K-S1)

  • No viewfinder: None vs Pentaprism
  • Doesn't have a built-in focus motor
  • Slower autofocus: Contrast detection vs Phase detection

common strengths of the Lumix DMC-GF8 and K-S1

  • Many lenses available: 108 lenses vs 113 lenses
  • Each has a built-in flash

Sony Alpha A5000

Sony Alpha A5000
7 months older
$498 16-50mm lens

Significant advantages of the A5000 (vs the K-S1)

  • Has a flip-out screen
  • Significantly smaller: Compact (110×63×36 mm) vs Prosumer size (121×93×70 mm)
  • Significantly lighter: 210 g vs 558 g

Significant disadvantages of the A5000 (vs the K-S1)

  • No image stabilization: None vs
    1. Sensor shift
  • No viewfinder: None vs Pentaprism
  • Doesn't have a built-in focus motor

common strengths of the A5000 and K-S1

  • Focus continuously recording movies
  • Inexpensive: $498.00 vs $329.00
  • Each has a built-in flash

Panasonic Lumix DMC-GX7 Mark II

Panasonic Lumix DMC-GX7 Mark II
1 year newer

Significant advantages of the DMC-GX7 Mark II (vs the K-S1)

  • Higher resolution movies: UHD @ 30fps vs 1080p @ 30fps
  • Has a touch screen
  • Has a flip-out screen

Significant disadvantages of the DMC-GX7 Mark II (vs the K-S1)

  • Doesn't have a built-in focus motor
  • Has a digital viewfinder: Digital vs Pentaprism
  • Slower autofocus: Contrast detection vs Phase detection

common strengths of the DMC-GX7 Mark II and K-S1

  • Many lenses available: 108 lenses vs 113 lenses
  • Each has a built-in flash

compared toPro DSLR competitors

Generally, some of the advantages of the Pentax K-S1 compared to pro DSLR competitors include: it records higher quality movies (1080p @ 30fps vs none), has image stabilization (sensor shift vs none), takes slightly higher resolution photos (21.1 MP vs 17.9 MP), can focus continuously while recording movies and is newer (august 2014 vs september 2009).

However, on average it has a slightly smaller screen (3" vs 3.2"), it's body is not weather sealed, doesn't shoot as fast continuously (5.4 fps vs 8 fps), doesn't have a screen which flips out and lacks and external mic jack.

Nikon D300

Nikon D300
7 years older
$465 (body only)

Significant advantages of the D300 (vs the K-S1)

  • Much more lenses available: 230 lenses vs 113 lenses
  • Weather sealed
  • Significantly more focus points: 51 vs 11

Significant disadvantages of the D300 (vs the K-S1)

  • Much lower true resolution: 12.2 MP vs 21.1 MP
  • Much larger: Professional size (147×114×74 mm) vs Prosumer size (121×93×70 mm)
  • No built-in GPS

common strengths of the D300 and K-S1

  • Both have a built-in lens focus motor, which is uncommon in cameras similar to these
  • Very inexpensive: $465.14 vs $329.00
  • Thin: 2.9" vs 2.8"

Canon EOS 7D

Canon EOS 7D
5 years older
$1,099 (body only)
$1,418 18-135mm lens

Significant advantages of the 7D (vs the K-S1)

  • Shoots much faster: 8 fps vs 5.4 fps
  • Has an external mic jack
  • Weather sealed

Significant disadvantages of the 7D (vs the K-S1)

  • Lower true resolution: 17.9 MP vs 21.1 MP
  • Significantly larger: Professional size (148×111×74 mm) vs Prosumer size (121×93×70 mm)
  • No built-in GPS

common strengths of the 7D and K-S1

  • Fairly small: Professional size (148×111×74 mm) vs Prosumer size (121×93×70 mm)
  • Inexpensive: $1,099.00 vs $329.00
  • Thin: 2.9" vs 2.8"

Nikon D750

Nikon D750
similar age
$1,149 - $1,297 (body only)
$1,797 24-120mm lens

Significant advantages of the D750 (vs the K-S1)

  • Significantly larger screen: 3.2" vs 3"
  • Much longer battery life: 1230 shots vs 480 shots
  • Has an external mic jack

Significant disadvantages of the D750 (vs the K-S1)

  • Much larger: Professional size (141×113×78 mm) vs Prosumer size (121×93×70 mm)
  • No built-in GPS
  • Much thicker: 3.1" vs 2.8"

common strengths of the D750 and K-S1

  • Focus continuously recording movies
  • Both have a built-in lens focus motor, which is uncommon in cameras similar to these
  • Inexpensive: $1,149.00 vs $329.00

compared toBoutique competitors

Generally, some of the advantages of the Pentax K-S1 compared to boutique competitors include: it has a significantly larger screen (3" vs 2.7"), has a slightly higher resolution screen (921k dots vs 230k dots), has better image stabilization (sensor shift vs none), slightly higher maximum light sensitivity (51,200 ISO vs 3,200 ISO) and uses fast phase detection autofocus (phase detection vs contrast detection).

However, on average it doesn't have a screen which flips out, lacks and external mic jack and is thicker (2.8" vs 1.3").

Sony SLT-A68

Sony SLT-A68
1 year newer

Significant advantages of the SLT-A68 (vs the K-S1)

  • Has a flip-out screen
  • Has an external mic jack

Significant disadvantages of the SLT-A68 (vs the K-S1)

  • Significantly smaller screen: 2.7" vs 3"
  • Built-in lens only
  • No built-in GPS

common strengths of the SLT-A68 and K-S1

  • Both use faster phase detection autofocus: Phase detection vs Phase detection
  • Built-in flashes

Leica X1

Leica X1
5 years older
$1,850

Significant advantages of the X1 (vs the K-S1)

  • Significantly smaller: Compact (124×60×32 mm) vs Prosumer size (121×93×70 mm)
  • Significantly thinner: 1.3" vs 2.8"
  • Significantly lighter: 306 g vs 558 g

Significant disadvantages of the X1 (vs the K-S1)

  • No image stabilization: None vs
    1. Sensor shift
  • Significantly smaller screen: 2.7" vs 3"
  • Significantly lower resolution screen: 230k dots vs 921k dots

common strengths of the X1 and K-S1

  • Built-in flashes