I can't embed actual RAW files or full-resolution JPEGs here, but I can describe what you'll see when you open the files from each of these cameras in Lightroom. This is the kind of qualitative assessment that spec sheets can't capture — the "feel" of the images, the color rendering, the way highlights roll off.
Canon 5D Mark III: Files have a natural, neutral color balance that's a joy to work with in post. Skin tones come out warm without being orange — Canon's color science at its peak. At ISO 3200, noise is fine-grained and monochromatic, resembling film grain more than digital noise. Dynamic range at base ISO is excellent: you can pull 3–4 stops of shadow detail without the image falling apart. The 22.3MP resolution gives you enough detail for large prints without filling your hard drive. The overall look is polished — the 5D Mark III files need less editing than almost any other camera I've used.
Canon 5D Mark II: The 5D Mark II produces images that many photographers describe as having a certain "magic" — a slightly warmer, more film-like color palette than the Mark III. Skin tones are exceptionally flattering, which is why this body is still beloved by portrait photographers. At ISO 1600 and above, noise is more pronounced than the Mark III, but it has a pleasant, organic texture. The 21.1MP files are sharp enough for 24×36 prints. The highlight roll-off is gentle — overexposed skies recover gracefully. If you shoot RAW and enjoy the editing process, the Mark II's files reward careful processing with a look that modern sensors sometimes feel too clinical to achieve.
Nikon D3100 & D3200: Nikon's DX sensors produce cooler, slightly more contrasty files than Canon's equivalent bodies. The D3100's 14.2MP sensor punches above its weight — colors are vibrant without being oversaturated, and ISO 800 files are clean enough for 11×14 prints. The D3200's 24.2MP sensor resolves significantly more detail — you can crop aggressively and still have a usable image. Both cameras produce JPEGs that are ready to share straight out of camera, with Nikon's Active D-Lighting doing a good job of preserving highlight and shadow detail. The D3200's files at ISO 100–400 are genuinely impressive for a camera that costs less than a modern kit lens.
Sony A6000: The 24.3MP APS-C sensor produces sharp, detailed files with a slightly cooler, more neutral color signature than Canon. Sony's JPEG engine tends toward accuracy over warmth — skin tones can look a touch green if you don't tweak the white balance. RAW files have excellent dynamic range; you can recover significant shadow detail at base ISO. At ISO 3200 and above, noise is more chroma-heavy (color noise) than the Canons, but it cleans up well with a touch of noise reduction in Lightroom. The overall look is crisp and modern — the A6000's files have a clinical sharpness that suits architecture, travel, and landscape work beautifully.
Canon Rebel T3i: The 18MP sensor delivers warm, pleasing colors in the classic Canon tradition. Images have good contrast and saturation straight out of camera. At ISO 800, noise is visible but well-controlled; ISO 1600 is usable with light noise reduction. The T3i's real strength is versatility — the articulating screen lets you compose from angles that would be impossible with a fixed screen, and the results are consistently good across a wide range of conditions. It's not a low-light monster, but paired with a fast prime, it produces portraits with beautiful subject separation and natural skin tones.
Canon Rebel XT: This is the wild card. The 8MP DIGIC II sensor produces images with a distinctly film-like character that modern cameras simply don't have. Colors are rich and slightly warm, with a gentle contrast curve that preserves highlight detail. At ISO 400, noise is already visible — but it's a pleasant, grain-like noise that adds character rather than ruining the image. The 8MP resolution limits print sizes to about 8×10 at 300dpi, but for web use and small prints, it's more than adequate. Shooting the Rebel XT feels like shooting a digital camera that thinks it's a film camera — the images have a vintage quality that's genuinely charming and hard to replicate with modern sensors.
Canon 85mm f/1.8: Wide open at f/1.8, the bokeh is smooth and creamy with a slight cat's-eye effect toward the corners. Stopped down to f/2.8, it's razor-sharp from center to edge. The color rendering is neutral and transparent — the lens doesn't impose its own color cast, which is ideal for portrait work. Flare control is excellent for a non-L lens.
Canon 17-40mm f/4L: At 17mm, expect some barrel distortion (easily corrected in Lightroom with one click). Colors are contrasty and punchy — typical L-series rendering. Sharpness is excellent across the frame at f/5.6–f/8. At f/4, the corners are slightly soft, but this is rarely noticeable in real-world landscape shots. Sunstars at f/16 are crisp and 18-point. Flare is well-controlled for an ultra-wide zoom. The overall look is vivid and three-dimensional — L-glass has a micro-contrast quality that makes images pop.
Canon 100-400mm f/4.5-5.6L IS: At 400mm, atmospheric haze is a bigger challenge than lens sharpness. In good conditions, this lens resolves fine feather detail on birds and crisp lettering on distant signs. Contrast is slightly lower than the 17-40mm (a function of the push-pull design and 17 elements), but it's still excellent. Bokeh at 400mm f/5.6 is surprisingly smooth — busy backgrounds melt into a clean wash of color. The IS buys you 2–3 stops — I've gotten sharp frames at 1/60s at 400mm, which is remarkable. The rendering is classic L-series: neutral, sharp, and transparent.