Sigma fp 45mm f/2.8 Lens Alternatives: 6 Similar Picks Compared
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If you are looking for sigma fp 45mm f 2 8 lens alternatives, you likely value its compact full-frame design. This camera pairs a 24.6MP sensor with a fast f/2.8 aperture. It delivers strong low-light performance and 4K video in a small, splash-proof body. You might prefer this setup for its portability and clean image quality in challenging lighting.
However, you may need different specifications for your workflow. Some users require higher resolution for detailed prints. Others prioritize faster autofocus for action or specific video resolutions like 6K. The alternatives in this list were chosen because their specs overlap with the original. You will find options with higher megapixel counts, different lens mounts, or specialized video features. These 6 picks cover a range of full-frame bodies that share core capabilities with the Sigma fp. You can compare sensor sizes, video formats, and physical dimensions to find the best fit for your needs.
Our top pick: Sigma fp with 45mm f/2.8 Lens.
How these alternatives compare
Sony Alpha 7R V Full-Frame 61MP Camera
The Sony Alpha 7R V offers 61MP resolution, significantly higher than the Sigma fp’s 24.6MP sensor. This provides far more detail for landscape or studio work. It weighs 3.32 pounds and measures 6 x 4 x 4 inches, making it much larger and heavier than the Sigma’s 1.4-pound, 2.76-inch body. You gain advanced autofocus and 8K video capabilities, but you lose the compact portability and L-mount lens flexibility of the Sigma. Choose this if maximum image resolution and professional video specs outweigh your need for a lightweight, pocketable camera.
Canon EOS R5 Full-Frame 45MP Camera Body
The Canon EOS R5 features a 45MP full-frame sensor, offering nearly double the resolution of the Sigma fp. It is designed as a body-only purchase, so you must add your own lens. At 3.52 pounds and 11.1 x 5.9 x 8.9 inches, it is substantially larger and heavier than the compact Sigma setup. You get high-speed burst performance and excellent detail, but sacrifice the integrated 45mm lens and splash-proof, travel-friendly form factor. Pick this Canon model if you prioritize high megapixel counts and speed over portability and included optics.
Sony Alpha 7 IV 33MP Full-Frame Camera
The Sony Alpha 7 IV provides a 33MP sensor, which is higher than the Sigma’s 24.6MP. It is sold as a body-only unit, requiring you to buy lenses separately. This camera targets hybrid shooters with strong 4K 60p video and integrated audio features. It lacks the compact size and integrated lens of the Sigma fp, which measures just 2.76 x 1.73 x 1.1 inches. You gain processing speed and video versatility, but give up the all-in-one package and extreme portability. Select this Sony option if you need a balanced hybrid camera with higher resolution.
Sony Alpha 7 V Full-Frame Camera
The Sony Alpha 7 V focuses on fast action and AI tracking for serious photographers. It uses the Sony E-mount, which differs from the Sigma’s L-mount system. This camera is sold body-only, so you do not get the included 45mm f/2.8 lens. It prioritizes autofocus performance and video versatility over the compact, lightweight design of the Sigma fp. You get professional-grade speed, but you lose the integrated lens and the small, splash-proof form factor. Choose this Sony model if advanced autofocus and lens ecosystem compatibility are more important than portability.
Sony a7 III with 20mm F1.8 Lens
The Sony a7 III with 20mm f/1.8 Lens offers a wider f/1.8 aperture, allowing more light than the Sigma’s f/2.8 lens. This improves low-light wide-angle performance. The 20mm focal length is wider than the Sigma’s 45mm, changing your perspective. It is sold as a body-only package with a different lens, so the total kit differs significantly. You gain a faster aperture and wider angle, but you lose the specific 45mm focal length and the compact, integrated nature of the Sigma fp. Pick this Sony combo if wide-angle low-light shooting is your primary goal.
Nikon ZR Cinema 6K Full-Frame Camera
The Nikon ZR Cinema 6K Full-Frame Camera targets filmmakers with 6K video resolution and RED color science. It weighs 3.02 pounds and measures 5.24 x 3.17 x 1.92 inches, making it larger than the Sigma fp. It is body-only, so you must source your own lens. You gain professional audio inputs and high dynamic range, but you lose the compact size, integrated 45mm lens, and still photography focus of the Sigma. Choose this Nikon camera if you need specific color workflows and higher video resolution for cinematic projects.
Quick picks
Our 7 picks
Sigma fp with 45mm f/2.8 Lens
Best for: compact full-frame shooting and video
- Sensor Format
- Full-Frame
- Sensor Resolution
- 24.6MP
- Video Resolution
- 4K UHD
- ISO Sensitivity
- Expandable up to 102400
- Color
- Black
- Aperture
- f/2.8
View on Amazon: Sigma fp with 45mm f/2.8 Lens Affiliate link
The Sigma fp is a compact full-frame mirrorless camera bundled with a 45mm f/2.8 lens. It features a 24.6MP sensor and records 4K UHD video. The body measures 2.76 x 1.73 x 1.1 inches and weighs 1.4 pounds. You get an ISO range expandable to 102400 for low light. This setup suits users who need a small, versatile body for both photography and video work.
Pros
- 24.6MP full-frame CMOS sensor for high detail
- 4K UHD video recording capability
- Compact dimensions of 2.76 x 1.73 x 1.1 inches
- Lightweight 1.4-pound body for portability
- ISO expandable up to 102400 for low light
Cons
- Only 24.6MP resolution compared to higher counts in competitors
- No built-in viewfinder mentioned in specifications
- Single 45mm f/2.8 lens limits focal length range
Good fit if
- You need a small camera body that fits easily in a bag
- You shoot in varied lighting conditions requiring high ISO flexibility
- You want a full-frame sensor for better image quality
Skip if
- You require high-resolution stills above 24 megapixels
- You need a versatile zoom lens for different subjects
- You prefer a camera with a built-in viewfinder
Verdict: The Sigma fp with 45mm f/2.8 Lens offers a compact full-frame solution for photographers and videographers who prioritize portability and low-light performance over high megapixel counts or lens versatility.
Sony Alpha 7R V Full-Frame 61MP Camera
Best for: high-resolution photography and 8K video
- Sensor Format
- Full-frame
- Sensor Resolution
- 61.0 MP
- Video Resolution
- 8K 24p/25p, 4K 60p (50p)
- Image Processor
- BIONZ XR
- Configuration
- Body Only
- Color
- Black
View on Amazon: Sony Alpha 7R V Full-Frame 61MP Camera Affiliate link
The Sony Alpha 7R V is a full-frame mirrorless camera body with a 61.0 MP back-illuminated sensor. It features an AI processing unit for advanced autofocus and an 8K 24p video capability. Weighing 3.32 pounds, it offers high-resolution imaging and robust processing speed. This camera suits you if you prioritize extreme detail in stills and high-end video specs in a compact full-frame format.
Pros
- 61.0 MP full-frame back-illuminated Exmor R CMOS sensor
- 8K 24p/25p and 4K 60p video recording
- AI processing unit for real-time recognition autofocus
- BIONZ XR engine boosts processing speed by up to 8x
Cons
- Heavier build at 3.32 pounds compared to lighter entry-level bodies
- High 61.0 MP resolution may require faster storage cards
- Body only configuration means no included lens
Good fit if
- You need high-resolution stills for large prints
- You shoot 8K or high-bitrate 4K video
- You want advanced AI-driven autofocus tracking
Skip if
- You prefer a lightweight camera under 1.5 pounds
- You need a kit with an included lens
- You shoot only 1080p video and need lower resolution
Verdict: Sony Alpha 7R V 61MP Full-Frame Camera delivers exceptional resolution and video specs for professionals. It fits photographers who need maximum detail and advanced autofocus in a full-frame body.
Canon EOS R5 Full-Frame 45MP Camera Body
Best for: high-resolution photography
- Sensor Format
- Full-frame
- Sensor Resolution
- 45 Megapixel
- Burst Shooting Speed
- Up to 12 fps (mech) / 20 fps (elec)
- Autofocus System
- Dual Pixel CMOS AF (1,053 AF Areas)
- ISO Sensitivity
- ISO 100-51200 (expandable to 102400)
- Image Processor
- DIGIC X
View on Amazon: Canon EOS R5 Full-Frame 45MP Camera Body Affiliate link
This renewed Canon EOS R5 is a full-frame mirrorless camera body. It features a 45-megapixel sensor and DIGIC X processor. You get up to 20 fps with the electronic shutter. Dual Pixel CMOS AF covers 100% of the area. It is suitable for photographers needing high resolution and fast burst shooting speeds.
Pros
- 45 Megapixel full-frame CMOS sensor
- DIGIC X image processor
- Up to 20 fps electronic shutter speed
- Dual Pixel CMOS AF with 1,053 areas
Cons
- Sold as renewed, not new
- Body only, no lens included
- Heavier build at 3.52 pounds
Good fit if
- You need high resolution for detailed images
- You shoot fast-moving subjects
- You prefer a full-frame sensor
Skip if
- You want a brand new unit
- You need a kit with a lens
- You prefer a lighter camera body
Verdict: Canon EOS R5 45MP Full-Frame Camera delivers high resolution and speed. It fits photographers who prioritize detail and burst performance over weight.
Sony Alpha 7 IV 33MP Full-Frame Camera
Best for: Hybrid shooters needing 4K 60p and 33MP resolution
- Sensor Format
- Full-frame
- Sensor Resolution
- 33MP
- Video Resolution
- 4K 60p
- Image Processor
- BIONZ XR
- Configuration
- Body Only
- Color
- Black
View on Amazon: Sony Alpha 7 IV 33MP Full-Frame Camera Affiliate link
The Sony Alpha 7 IV pairs a 33MP full-frame sensor with the BIONZ XR processor. It records 4K 60p video with 10-bit color depth. The camera includes beamforming audio technology using four mic capsules. You get versatile recording modes and simple dial controls. This setup suits creators who need high-resolution stills and clean, high-frame-rate video with reliable sound capture.
Pros
- 33MP full-frame Exmor R sensor
- 4K 60p 10-bit 4:2:2 video
- Beamforming four-mic capsule array
- BIONZ XR image processor
Cons
- No in-body image stabilization listed in specs
- Body-only configuration requires separate lens purchase
- Limited to 60p max frame rate for 4K
Good fit if
- You need high-resolution 33MP stills
- You require clean 4K 60p video
- You want built-in beamforming audio
Skip if
- You need 8K video resolution
- You want a kit with a lens included
- You prefer 120p slow motion at 4K
Verdict: Sony Alpha 7 IV 33MP Full-Frame delivers strong hybrid performance for shooters who prioritize resolution and smooth 4K video with integrated audio. It fits users who value sensor size and processing speed over extreme frame rates.
Sony Alpha 7 V Full-Frame Camera
Best for: fast action and high-quality video
- Sensor Format
- Full-Frame
- Sensor Resolution
- 33.0 megapixel
- Burst Shooting Speed
- 30 fps
- Image Stabilization
- 5-Axis in-Body Stabilization
- Video Resolution
- 4K 120p
- ISO Sensitivity
- ISO 100-51200
View on Amazon: Sony Alpha 7 V Full-Frame Camera Affiliate link
This Sony Alpha 7 V is a full-frame mirrorless camera featuring a 33.0-megapixel sensor and AI autofocus. It offers blackout-free shooting at 30 fps and 4K 120p video. The body supports Sony E-mount lenses, making it versatile for various focal lengths. You get up to 16 stops of dynamic range and 7.5-step image stabilization. This setup suits shooters who need high speed and advanced tracking for moving subjects.
Pros
- 33.0-megapixel partially stacked Exmor RS CMOS sensor
- AI-based Real-time Recognition Autofocus with tracking
- 30 fps blackout-free bursts with AF/AE tracking
- Up to 7.5-step in-body image stabilization
- 4K 120p video recording capability
Cons
- Full-frame sensor may be larger than needed for travel
- High-speed burst shooting drains battery faster
- Complex AI features require learning time
Good fit if
- You need fast autofocus for sports or wildlife
- You shoot video requiring high frame rates
- You want advanced stabilization for handheld shots
Skip if
- You prefer a compact APS-C camera body
- You need a dedicated stills-only camera
- You want a simpler point-and-shoot experience
Verdict: Sony Alpha 7 V Full-Frame Camera delivers professional-grade speed and AI tracking for serious photographers. It fits users who prioritize autofocus performance and video versatility over portability.
Sony a7 III with 20mm F1.8 Lens
Best for: Low-light wide-angle photography
- Sensor Format
- Full frame
- Sensor Resolution
- 24.2MP
- Burst Shooting Speed
- Up to 10fps
- ISO Sensitivity
- ISO 50 to 204,800
- Configuration
- Body Only
- Color
- Black
View on Amazon: Sony a7 III with 20mm F1.8 Lens Affiliate link
The Sony a7 III pairs a 24.2MP full-frame sensor with a 20mm f/1.8 lens. This combination offers a 15-stop dynamic range and ISO sensitivity up to 204,800. You get burst shooting speeds up to 10fps. The compact lens design suits both full-frame and APS-C cameras. It is a solid option for photographers who need wide-angle coverage with fast aperture performance.
Pros
- 24.2MP BSI full-frame sensor
- 20mm f/1.8 lens for low light
- 15-stop dynamic range
- Up to 10fps burst shooting
Cons
- Lower 24.2MP resolution compared to competitors
- Older a7 III model architecture
- 3-inch LCD screen only
Good fit if
- You need a fast f/1.8 wide lens
- You shoot in low light conditions
- You prefer a compact full-frame setup
Skip if
- You require 4K video stabilization
- You need high-resolution 30MP+ images
- You want the latest autofocus system
Verdict: Sony a7 III with 20mm f/1.8 Lens delivers reliable wide-angle performance for stills. It suits users prioritizing aperture speed and dynamic range over high megapixel counts.
Nikon ZR Cinema 6K Full-Frame Camera
Best for: filmmakers needing RED color science
- Sensor Format
- Full-frame
- Configuration
- Body Only
- Video Resolution
- 6K Video
- Color
- Black
- Focal Length
- 50mm
- Lens Type
- Zoom
View on Amazon: Nikon ZR Cinema 6K Full-Frame Camera Affiliate link
The Nikon RED Z Cinema is a compact full-frame camera body featuring a 6K sensor and RED color science. It includes a swiveling 4-inch touchscreen and supports 32-bit float audio. This setup suits filmmakers needing high dynamic range and professional color grading capabilities in a small package.
Pros
- 6K full-frame sensor with 15+ stops of dynamic range
- RED color science and REDCODE RAW (R3D NE) support
- Swiveling 4-inch DCI-P3 touchscreen monitor
- 32-bit float audio recording for external microphones
Cons
- Heavier at 3.02 pounds compared to standard mirrorless bodies
- No built-in lens specified in body-only configuration
- Limited to 6K resolution rather than higher 8K options
Good fit if
- You need RED color science in a compact body
- You require 32-bit float audio recording
- You prioritize high dynamic range for color grading
Skip if
- You want a lighter camera under 2 pounds
- You need an 8K video resolution
- You prefer a camera with a built-in lens
Verdict: Nikon RED Z Cinema 6K Full-Frame offers professional RED color science and audio in a compact body. It fits filmmakers who need high dynamic range and specific color workflows.
Specifications side by side
| Spec | Sigma fp with 45mm f/2.8 Lens | Sony Alpha 7R V Full-Frame 61MP Camera | Canon EOS R5 Full-Frame 45MP Camera Body | Sony Alpha 7 IV 33MP Full-Frame Camera | Sony Alpha 7 V Full-Frame Camera | Sony a7 III with 20mm F1.8 Lens | Nikon ZR Cinema 6K Full-Frame Camera |
|---|---|---|---|---|---|---|---|
| Sensor Format | Full-Frame | Full-frame | Full-frame | Full-frame | Full-Frame | Full frame | Full-frame |
| Sensor Resolution | 24.6MP | 61.0 MP | 45 Megapixel | 33MP | 33.0 megapixel | 24.2MP | not stated |
| Burst Shooting Speed | not stated | not stated | Up to 12 fps (mech) / 20 fps (elec) | not stated | 30 fps | Up to 10fps | not stated |
| Autofocus System | not stated | not stated | Dual Pixel CMOS AF (1,053 AF Areas) | not stated | not stated | not stated | not stated |
| Image Stabilization | not stated | not stated | not stated | not stated | 5-Axis in-Body Stabilization | not stated | not stated |
| Video Resolution | 4K UHD | 8K 24p/25p, 4K 60p (50p) | not stated | 4K 60p | 4K 120p | not stated | not stated |
| ISO Sensitivity | Expandable up to 102400 | not stated | ISO 100-51200 (expandable to 102400) | not stated | ISO 100-51200 | ISO 50 to 204,800 | not stated |
| Image Processor | not stated | BIONZ XR | DIGIC X | BIONZ XR | BIONZ XR2 | not stated | not stated |
| Configuration | not stated | Body Only | Body Only | Body Only | Body Only | Body Only | Body Only |
| Color | Black | Black | Black | Black | Black | Black | Black |
| Focal Length | not stated | not stated | not stated | not stated | not stated | not stated | 50mm |
| Aperture | f/2.8 | not stated | not stated | not stated | f/2.8 | f/1.8 | not stated |
| Lens Mount | not stated | not stated | not stated | not stated | Sony E-Mount | not stated | not stated |
| Lens Type | not stated | not stated | not stated | not stated | not stated | not stated | Zoom |
| Focus Type | not stated | not stated | not stated | not stated | Autofocus | not stated | not stated |
| Dimensions | 2.76 × 1.73 × 1.1 inches | 6 × 4 × 4 inches | 11.1 × 8.9 × 5.9 inches | not stated | not stated | not stated | 1.92 × 5.24 × 3.17 inches |
| Weight | 1.4 pounds | 3.32 pounds | 3.52 pounds | not stated | not stated | not stated | 3.02 pounds |
| Size | 2.76 x 1.73 x 1.1 inches | not stated | Camera Body Only | not stated | not stated | not stated | Compact |
| Model | 937317 | Sony Alpha 7R V | EOS R5II | ILCE-7M4 | ILCE-7M5 | ILCE-7M3 | 2043 |
Frequently asked questions
Which full-frame mirrorless camera is the most compact alternative?
The Sigma fp with 45mm f/2.8 Lens is the most compact option listed. It measures 2.76 x 1.73 x 1.1 inches and weighs 1.4 pounds. This small size makes it ideal for travel and discreet shooting. It retains the full-frame sensor for quality images while minimizing bulk.
What is the best high-resolution full-frame camera for photography?
The Sony Alpha 7R V is the best choice for high-resolution work. It features a 61MP full-frame sensor, capturing significantly more detail than the Sigma fp. This makes it suitable for large prints and cropping. It weighs 3.32 pounds and includes advanced autofocus for professional results.
Which camera offers the best balance of resolution and video?
The Sony Alpha 7 IV provides a strong balance with 33MP resolution. It supports 4K 60p video, making it versatile for hybrid shooters. The full-frame sensor ensures good low-light performance. It prioritizes processing speed and integrated audio, fitting users who need both stills and smooth video clips.
Is there a full-frame camera with a faster aperture lens included?
The Sony a7 III with 20mm f/1.8 Lens offers a faster aperture. The f/1.8 specification allows more light into the sensor, aiding low-light wide-angle photography. This setup suits users prioritizing aperture speed over high megapixel counts. It delivers reliable performance for stills with excellent dynamic range.
Which camera is best for professional video with RED color science?
The Nikon ZR Cinema 6K Full-Frame Camera is built for filmmakers. It features 6K video resolution and RED color science for specific color workflows. The body is compact, measuring 5.24 x 3.17 x 1.92 inches. It includes professional audio features and high dynamic range for cinematic quality.
What is the best Sony E-mount camera for fast action?
The Sony Alpha 7 V is the top pick for E-mount users. It delivers professional-grade speed and AI tracking for serious photographers. It prioritizes autofocus performance and video versatility. This model is ideal for capturing fast action with high-quality results, though it is larger than entry-level options.
Which camera provides the highest burst performance for sports?
The Canon EOS R5 45MP Full-Frame Camera is designed for speed. It prioritizes detail and burst performance over weight. The 45MP sensor captures high-resolution images rapidly. It is a body-only option, allowing you to pair it with lenses that match your specific shooting needs for action sports.