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Tech & Camera

Sony & Canon: Full-Frame Pioneers & Precision Optics

Discover the leading mirrorless full-frame cameras and elite lenses from Sony and Canon — exceptional clarity, unrivaled autofocus, and pro-level flexibility for photographers and creators who demand nothing but the best.

Sony A7 IV (2021) – Hybrid Full-Frame Mirrorless Camera - Current Top Seller

Sony A7 IV (introduced October 2021) is a 33-megapixel full-frame mirrorless camera built for hybrid creators. It delivers outstanding still photography with fast, accurate autofocus, while also offering 4K 60p 10-bit video for filmmakers. With in-body image stabilization, dual card slots, and Sony’s renowned Eye-AF, it’s a versatile choice for both professionals and enthusiasts.

Sony A7 IV — Detailed Specifications

Spec CategoryDetails
Sensor & Resolution33.0 effective megapixels (≈34.1 total), full-frame Exmor R BSI CMOS sensor; 7008 × 4672 pixel resolution. 
Image ProcessorBIONZ XR 
Lens MountSony E-mount (compatible with FE full-frame and APS-C lenses)
ISO RangeNative ISO 100-51,200; expandable to ISO 50-204,800 
AutofocusHybrid AF with 759 phase-detection points + contrast detection; Real-Time Eye AF for humans, animals, birds. 
Continuous Shooting / Burst RateUp to 10 frames per second (AF/AE tracking) using mechanical or electronic shutter. 
Video Capabilities4K up to 60fps (10-bit) in Super35/Crop mode, full-frame 4K at 30/24/25fps; also supports oversampled 4K from ~7K readout. 
Viewfinder & LCD3.68-million-dot EVF with 120Hz refresh; rear vari-angle 3.0-inch touchscreen LCD (~1.03 million dots) 
Stabilization5-axis in-body image stabilization (IBIS), about 5.5 stops CIPA standard 
Shutter & ExposureMechanical shutter up to 1/8000 sec; longest exposure: 30 sec + Bulb mode; interface includes both mechanical and silent shutter modes.  
Memory Cards / StorageDual card slots: Slot 1 is CFexpress Type A, Slot 2 is SD card (UHS-II) 
ConnectivityUSB-C (SuperSpeed 10Gbps), WiFi (2.4GHz & 5GHz), Bluetooth, full-size HDMI out (for video monitoring) 
Body & BuildWeather-sealed body (magnesium alloy), weight approx. 658 g (with battery & card), dimensions around 131.3 × 96.4 × 79.8 mm 
ExtrasReal-Time Eye AF tracking, focus breathing compensation, creative looks / color profiles (S-Cinetone etc.), live streaming via USB-C, etc.

Heating Issue in Sony A7 IV

The Sony A7 IV is a hybrid full-frame camera, designed for both photo and video. While it performs very well, users have reported heating problems during extended 4K recording, especially in 4K 60p, 10-bit 4:2:2 mode.

  • In moderate room temperature (20–22°C / 68–72°F), overheating can occur after 45–60 minutes of continuous 4K 60p recording.

  • In warmer environments (28–30°C / 82–86°F), it may shut down even faster, sometimes in 30–40 minutes.

  • Using dual card recording, keeping the LCD closed, or operating in direct sunlight can shorten safe recording times.

Cooling Recommendation

  • After recording 40–50 minutes of 4K 60p video, it’s advisable to let the camera cool down for at least 10–15 minutes before the next long take.

  • For shorter 4K clips (10–20 minutes), shorter breaks (5 minutes with LCD screen open) are usually enough.

  • Opening the LCD away from the body, recording to a single card, and avoiding direct heat exposure can extend usable recording time.

  • If continuous long-form video is critical (e.g., events, concerts), consider an external recorder (Atomos Ninja, etc.) or a camera designed for heavy video work (Sony FX3, A7S III).

Sony G Master Lenses: Ultimate Performance for Every Creator

Sony FE 70-200mm f/2.8 GM OSS II

Advantages:

  • Professional telephoto zoom with constant f/2.8 aperture.

  • Extremely sharp across zoom range, even wide open.

  • Built-in OSS stabilization + lightweight redesign (30% lighter than first version).

  • Fast, quiet autofocus (sports, concerts, wildlife).

Disadvantages:

  • Very expensive (~$2,600).

  • Still large — not travel-friendly.

  • Overkill for casual shooters.

Sony FE 24-70mm f/2.8 GM II

Advantages:

  • Versatile “workhorse” focal range (wide to portrait).

  • Lighter and smaller than previous model.

  • Constant f/2.8 aperture with exceptional sharpness.

  • Excellent coatings reduce flare/ghosting.

Disadvantages:

  • Pricey (~$2,300).

  • Heavy for casual walk-around use compared to smaller primes.

Sony FE 85mm f/1.4 GM

Advantages:

  • The go-to portrait lens — stunning background blur (bokeh).

  • Very sharp subject isolation.

  • Smooth rendering and excellent low-light performance.

Disadvantages:

  • Autofocus slower than newer GM II lenses.

  • Large and heavy (~820 g).

  • Expensive (~$1,800).

Sony FE 50mm f/1.4 GM

Advantages:

  • Classic “normal” focal length, versatile for street, portraits, travel.

  • Fast f/1.4 aperture with beautiful bokeh.

  • Smaller and lighter than the f/1.2 GM (516 g).

  • More affordable than f/1.2 (~$1,300).

Disadvantages:

  • Not as extreme in bokeh separation as the f/1.2.

  • Some competition from cheaper third-party 50mm f/1.4 lenses.

Sony FE 50mm f/1.2 GM

Advantages:

  • Flagship 50mm lens with ultra-bright f/1.2 aperture.

  • Incredible subject isolation and dreamy bokeh.

  • Superb sharpness even wide open.

  • Premium build, weather sealed.

Disadvantages:

  • Very expensive (~$2,000).

  • Heavier (~778 g) compared to f/1.4 version.

  • Shallow depth of field can be tricky to control.

Sony FE 24mm f/1.4 GM

Advantages:

  • Lightweight (445 g), compact, great for travel.

  • Superb for astrophotography & landscapes with wide f/1.4 aperture.

  • Sharp corner-to-corner, excellent flare control.

  • Affordable relative to other GM lenses (~$1,400).

Disadvantages:

  • Wide field not ideal for portraits (can distort faces).

  • Autofocus less “snappy” than newer zoom GMs.

  • Limited use case vs. 24-70mm zoom.

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