As well as being compared against other entry-level DSLRs, the Sigma SD15 is also often compared to pro DSLRs. The Sigma SD15's top rivals come from Nikon (such as the D5100 and the D80) and Pentax (such as the K-500)

Competitor classes

compared toEntry-level DSLR competitors

Generally, some of the advantages of the Sigma SD15 compared to other entry-level DSLR competitors include: it has a slightly larger screen (3" vs 2.5"), has higher quality type of viewfinder (pentaprism vs pentamirror) and has a CMOS-family sensor (CMOS vs CCD).

However, on average it doesn't record movies (none vs 1080p @ 24fps), has a much lower resolution screen (150k dots vs 920k dots), significantly smaller viewfinder (0.52x vs 0.61x), doesn't have image stabilization (none vs sensor shift) and takes much lower resolution photos (4.6 MP vs 16.1 MP).

Nikon D5100

Nikon D5100
2 years newer
$372 (body only)

Significant advantages of the D5100 (vs the SD15)

  • Much higher true resolution: 16.1 MP vs 4.6 MP
  • Much higher resolution screen: 920k dots vs 150k dots
  • Has live view

Significant disadvantages of the D5100 (vs the SD15)

  • Doesn't have a pentaprism viewfinder: Pentamirror vs Pentaprism
  • Less viewfinder coverage: 95% vs 98%

common strengths of the D5100 and SD15

  • Both use faster phase detection autofocus: Phase detection vs Phase detection

Nikon D80

Nikon D80
2 years older
$266 (body only)

Significant advantages of the D80 (vs the SD15)

  • Much higher true resolution: 10 MP vs 4.6 MP
  • Much larger viewfinder: 0.62x vs 0.52x
  • Much more lenses available: 230 lenses vs 37 lenses

Significant disadvantages of the D80 (vs the SD15)

  • Much smaller screen: 2.5" vs 3"
  • Has a CCD-family sensor: CCD vs CMOS
  • Less viewfinder coverage: 95% vs 98%

common strengths of the D80 and SD15

  • Both have pentaprism viewfinders: Pentaprism vs Pentaprism
  • Both use faster phase detection autofocus: Phase detection vs Phase detection

Nikon D7000

Nikon D7000
2 years newer
$602 (body only)

Significant advantages of the D7000 (vs the SD15)

  • Much higher true resolution: 16.1 MP vs 4.6 MP
  • Much higher resolution screen: 920k dots vs 150k dots
  • Has live view

Significant disadvantages of the D7000 (vs the SD15)

  • None found

common strengths of the D7000 and SD15

  • Both have pentaprism viewfinders: Pentaprism vs Pentaprism
  • Both use faster phase detection autofocus: Phase detection vs Phase detection

Pentax K-500

Pentax K-500
4 years newer

Significant advantages of the K-500 (vs the SD15)

  • Much higher true resolution: 16.1 MP vs 4.6 MP
  • Much higher resolution screen: 921k dots vs 150k dots
  • Image stabilization:
    1. Sensor shift
    vs None

Significant disadvantages of the K-500 (vs the SD15)

  • None found

common strengths of the K-500 and SD15

  • Both have pentaprism viewfinders: Pentaprism vs Pentaprism
  • Both use faster phase detection autofocus: Phase detection vs Phase detection

Canon Rebel T4i

Canon Rebel T4i
3 years newer

Significant advantages of the T4i (vs the SD15)

  • Much higher true resolution: 17.9 MP vs 4.6 MP
  • Much higher resolution screen: 1,040k dots vs 150k dots
  • Has live view

Significant disadvantages of the T4i (vs the SD15)

  • Doesn't have a pentaprism viewfinder: Pentamirror vs Pentaprism
  • Less viewfinder coverage: 95% vs 98%

common strengths of the T4i and SD15

  • Both use faster phase detection autofocus: Phase detection vs Phase detection

compared toPro DSLR competitors

Generally, compared to pro DSLR competitors the Sigma SD15 doesn't record movies (none vs 1080p @ 30fps), has a significantly smaller screen (3" vs 3.2"), has a much lower resolution screen (150k dots vs 921k dots), much smaller viewfinder (0.52x vs 0.70x) and takes much lower resolution photos (4.6 MP vs 24.2 MP).

Nikon D600

Nikon D600
3 years newer
$1,457 (body only)
$2,172 24-85mm lens

Significant advantages of the D600 (vs the SD15)

  • Much higher true resolution: 24.2 MP vs 4.6 MP
  • Has live view
  • Much higher resolution screen: 921k dots vs 150k dots

Significant disadvantages of the D600 (vs the SD15)

  • None found

common strengths of the D600 and SD15

  • Built-in flashes