Updated (March, 2012): Compare the Sony Alpha DSLR-A100 vs Sony SLT A57

Sony SLT-A55

Winner
Sony SLT-A55

75

vs

Sony Alpha DSLR-A100

32

Sony Alpha DSLR-A100

Runner-up
     

Reasons to buy the Sony SLT-A55

Full HD
Movie format
1080p @ 30fps
Large screen
Screen size
3.0"
High resolution screen
Screen resolution
921k dots
Large viewfinder
Viewfinder size
0.72x
 

Reasons to buy the Sony Alpha DSLR-A100

Image stabilization
Image stabilization
Sensor shift
Startup delay
Almost no delay when powering up
1100 ms startup delay
Sensor size
Large sensor
APS-C 23.6x15.8mm
Viewfinder
Great viewfinder
Pentamirror
 

differences

Advantages of the Sony DSLR-A100

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Viewfinder
Has an optical viewfinder
Pentamirror vs Digital
Help
Optical viewfinders save battery life and are more detailed
Battery life
Much longer battery life
750 shots vs 330 shots
Help
Around 2.5x more shots per battery charge
Thickness
Much thinner
2.8" vs 3.3"
Help
Around 20% thinner
Size
Smaller
133x95x71 mm vs 124x92x85 mm
Help
Around 10% smaller
Sensor size
Larger sensor
APS-C 23.6x15.8mm vs APS-C 23.5x15.6mm
Help
Almost the same
Sony Alpha DSLR-A100 Learn more about
the Sony DSLR-A100

Advantages of the Sony SLT-A55

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Movie format
Shoots movies
1080p @ 30fps vs None
Help
Shoots Full HD (1080p) video as well as still pictures
Screen size
Much larger screen
3.0" vs 2.5"
Help
More than 20% larger screen
Low light performance
Significantly lower noise at high ISO
816 ISO vs 476 ISO
Help
The SLT-A55 has a slight edge (0.8 f-stops) in low noise, high ISO performance
Continuous shooting
Shoots much faster
10 fps vs 3 fps
Help
Around 3.5x faster continuous shooting
Live view
Has live view
Yes vs No
Help
Preview your photos on the camera's screen before taking them
Screen resolution
Much higher resolution screen
921k dots vs 230k dots
Help
More than 4x higher resolution screen
Autofocus
Video autofocus
Phase detection vs None
Help
Automatically focuses shooting video
Overall image quality
Significantly better image quality
73.0 vs 61.0
Help
Around 20% better image quality
Viewfinder size
Much larger viewfinder
0.72x vs 0.54x
Help
More than 70% larger viewfinder
Dynamic range
More dynamic range
12.4 EV vs 11.2 EV
Help
1.2 f-stops more dynamic range
Autofocus
Faster autofocus
Phase detection vs Contrast detection
Help
Catch candid moments easily
3D
Takes 3D photos
Yes vs No
Help
Combines multiple photos into a 3D image
HDR
Has in-camera HDR
Yes vs No
Help
Combines multiple exposures to capture high dynamic range
Panorama
Can create panoramas in-camera
Yes vs No
Help
Stitches together multiple photos for a wide perspective
Color depth
Better color depth
23 bits vs 22 bits
Help
Distinguishes 1 more bits of color
Screen flips out
Has a flip-out screen
Yes vs No
Help
Flip-out screens can be helpful when composing tricky shots or taking movies
True resolution
Significantly higher true resolution
16 MP vs 10 MP
Help
Capture around 60% more detail in your photos
Shutter lag
Significantly less shutter lag
220 ms vs 310 ms
Help
Around 30% less delay when taking photos
GPS
Has a GPS
Yes vs No
Help
Automatically geotags your photos when traveling
Sensor type
Has a CMOS-family sensor
CMOS vs CCD
Help
CMOS-family sensors often produce better quality images
Light sensitivity (boost)
Has boost ISO
25,600 ISO vs None
Help
Allows taking photos in darker situations, often at the cost of additional noise in the image
Light sensitivity
Better maximum light sensitivity
12,800 ISO vs 1,600 ISO
Help
The SLT-A55's maximum light sensitivity is 3 f-stops better
Startup delay
Less startup delay
900 ms vs 1100 ms
Help
Around 20% less delay when turning on
Weight
Lighter
500 g vs 638 g
Help
More than 20% lighter
Sony SLT-A55 Learn more about
the Sony SLT-A55
vs

recommendations

Which camera do we recommend? Relative to the best recent entry-level DSLRs, and ignoring price

Snapsort Recommends
Sony Alpha DSLR-A100 Sony Alpha DSLR-A100 32
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        75 Sony SLT-A55 Sony SLT-A55
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              similarities

              Compared to recent entry-level DSLRs

              Common Strengths
              Image stabilization Good image stabilization Help
              Sensor shift
              Common Weaknesses
              Fastest shutter speed Slow max shutter speed Help
              1/4000 of a second
              True resolution Capture low resolution images Help
              DSLR-A100:10 MP
              SLT-A55:16 MP
              Lens availability Few lenses available Help
              123 lenses
              Weather sealed Neither is weather sealed Help
              Need to shelter it from weather
              Low light performance Above average noise at high ISO Help
              DSLR-A100:476 ISO
              SLT-A55:816 ISO

              dxomark

              DXOMark

              competitors

              Shared Competitors

              Advantages

              Disadvantages

              Sony SLT A58

              Sony SLT A58

              Entry-level DSLR

              $398 - $455 with 18-55mm lens

              True resolution Takes slightly higher resolution photos
              Supports 24p Records movies in 24p
              Thickness Is thicker
              Size Is slightly larger
              Sony SLT A57

              Sony SLT A57

              Entry-level DSLR

              $601 with 18-55mm lens

              Movie format Records higher quality movies
              Supports 24p Records movies in 24p
              Lowest price Is slightly more expensive
              Thickness Is thicker
              Nikon D3200

              Nikon D3200

              Entry-level DSLR

              $309 - $527 body only

              $389 - $447 with 18-55mm lens

              Low light performance Is significantly less noisy at high ISO
              Overall image quality Has slightly better image quality
              Thickness Is thicker
              Sensor size Has a marginally smaller sensor
              Nikon D3100

              Nikon D3100

              Entry-level DSLR

              $272 body only

              $390 - $409 with 18-55mm lens

              Supports 24p Records movies in 24p
              Startup delay Has slightly less startup delay
              Thickness Is thicker
              Sensor size Has a marginally smaller sensor
              Sony Alpha A6000

              Sony Alpha A6000

              Mirrorless interchangeable-lens

              $448 body only

              $598 - $600 with 16-50mm lens

              Low light performance Is much less noisy at high ISO
              Overall image quality Has slightly better image quality
              Lens availability Much fewer lenses available
              Canon Rebel T5i

              Canon Rebel T5i

              Entry-level DSLR

              $599 - $699 body only

              $597 - $700 with 18-55mm lens

              True resolution Takes slightly higher resolution photos
              Touch screen Has a touch screen
              Lowest price Is slightly more expensive
              Thickness Is thicker

              Sony Alpha DSLR-A100 Competitors

              Advantages

              Disadvantages

              Sony Alpha DSLR-A200

              Sony Alpha DSLR-A200

              Entry-level DSLR

              Autofocus Faster autofocus
              Screen size Significantly larger screen
              Startup delay More startup delay
              Size Slightly larger
              Canon EOS Digital Rebel XTi

              Canon EOS Digital Rebel XTi

              Entry-level DSLR

              $1,000 body only

              $1,600 with 17-85mm lens

              Low light performance Lower noise at high ISO
              Shutter lag Significantly less shutter lag
              Startup delay Much more startup delay
              Image stabilization No image stabilization
              Sony Alpha DSLR-A300

              Sony Alpha DSLR-A300

              Entry-level DSLR

              $650 body only

              Live view Has live view
              Screen size Significantly larger screen
              Viewfinder size Smaller viewfinder
              Size Larger
              Nikon D80

              Nikon D80

              Entry-level DSLR

              $1,799 body only

              $545 with 18-55mm lens

              Autofocus Faster autofocus
              Viewfinder size Significantly larger viewfinder
              Image stabilization No image stabilization
              Size Significantly larger

              Sony SLT-A55 Competitors

              Advantages

              Disadvantages

              Sony SLT-A77

              Sony SLT A77

              Pro DSLR

              $998 - $1,050 with 16-50mm lens

              Movie format Higher frame rate movies
              Supports 24p Supports 24p
              Startup delay Much more startup delay
              Size Much larger
              Canon Rebel T3i

              Canon Rebel T3i

              Entry-level DSLR

              $499 - $550 body only

              $549 - $630 with 18-55mm lens

              Supports 24p Supports 24p
              Viewfinder Has an optical viewfinder
              Autofocus Lacks video autofocus
              Viewfinder size Much smaller viewfinder
              Sony SLT-A37

              Sony SLT-A37

              Entry-level DSLR

              $464 - $479 with 18-55mm lens

              Supports 24p Supports 24p
              Shutter lag Significantly less shutter lag
              Screen resolution Much lower resolution screen
              Screen size Much smaller screen
              Sony SLT-A65

              Sony SLT A65

              Entry-level DSLR

              $600 with 18-55mm lens

              Movie format Higher frame rate movies
              Supports 24p Supports 24p
              Startup delay Much more startup delay
              Low light performance More noise at high ISO

              appearance

              Sony Alpha DSLR-A100 Sony SLT-A55
              Sony Alpha DSLR-A100 Sony SLT-A55
              Sony Alpha DSLR-A100 Sony SLT-A55

              discussion

              Sony Alpha DSLR-A100
              Alpha DSLR-A100
              Sony

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              Sony SLT-A55
              SLT-A55
              Sony

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