Ricoh GXR/A12 50mm Review
Studio Tests - 33mm F2.5 Macro GR lens
NOTE - These tests use RAW files converted with ACR 5.6 for the MTF50 calculations, and as we've noted elsewhere in this review, this appears to be a sub-optimal combination. This means that comparisons with other lenses should be viewed with caution - we suspect the Ricoh's numbers are being underestimated.
Ricoh were keen to stress to us the quality of the 'GR' series 33mm F2.5 Macro lens, and our tests show that their confidence in the optics is well-founded. There's very little to complain about here at all - the corners are slightly soft wide open, but this unlikely to be a problem in practice, as these areas of the frame will probably be either out-of-focus, or simply pictorially unimportant, anyway.
|Sharpness||Wide open at F2.5, sharpness is very good in the center and across most of the frame, just dropping off somewhat towards the extreme edge and corners. Close the aperture down a couple of notches to F3.3, though, and the corners sharpen up nicely. Performance is then impressively high and even across the frame, until diffraction starts degrading the image at small apertures. As usual on APS-C apertures smaller than F16 should probably be avoided, unless extreme depth of field is essential.|
|Chromatic Aberration||Chromatic aberration is very low indeed, with just-about-noticeable red/cyan fringing at the corners. If you shoot in JPEG, the camera will automatically correct this anyway.|
|Falloff||We consider falloff to become perceptible when the corner illumination falls to more than 1 stop less than the center. At a maximum of 2/3 stop wide open, there's really nothing to see here.|
|Distortion||Distortion is (as we'd expect from a lens designated 'Macro') very low indeed, at a near-imperceptible 0.4% barrel. In the shooting menu you've got the option to turn on distortion correction, but this doesn't have any effect (it appears to be a body function which has been implemented for use with other camera modules).|
|Macro - 40 x 26 mm coverage
106 px/mm (2686 px/in)
Corner softness: Excellent
Equiv. focal length: 50 mm
The A12's macro mode lets you focus from a minimum distance of 7 cm (30 cm in standard mode) which is approximately half life-size. This is not quite as good as the best dedicated macro lenses for SLRs, but still allows for interesting macro photography (photographer's skills permitting). Image quality at such short subject distances is still excellent but the macro mode is slightly let down by its Auto Focus performance. It's very slow, tends to hunt and frequently requires several attempts to lock on, making manual focus the better solution for this type of photography.
- 1 Introduction
- 2 Introduction
- 3 Specifications
- 4 Body & Design
- 5 Body & Design
- 6 Body & Design
- 7 Operation & Controls
- 8 Operation & Controls
- 9 Operation (live view)
- 10 Displays
- 11 Menus
- 12 Menus
- 13 Performance
- 14 Photographic tests (RAW)
- 15 Photographic tests (Noise)
- 16 Photographic tests (Noise)
- 17 Photographic tests (DR)
- 18 Photographic tests (Lens)
- 19 Photographic tests
- 20 Movie Mode
- 21 Compared to
- 22 Compared to (JPEG)
- 23 Compared to (JPEG)
- 24 Compared to (JPEG)
- 25 Compared to (RAW)
- 26 Compared to (RAW)
- 27 Compared to (RAW)
- 28 Compared to (RAW)
- 29 Compared to (Higher ISO)
- 30 Compared to (Resolution)
- 31 Compared to (Resolution)
- 32 Conclusion
- 33 Samples
Mar 24, 2011
Mar 2, 2010
Nov 10, 2009
Mar 1, 2013
Popular YouTube channel TastyTuts has put together this 33-video Beginner's Guide to Adobe Photoshop—a godsend for anybody who wants to learn Photoshop from scratch.
The long anticipated replacement for the popular Rode VideoMic Pro is almost ready for shipping. The price of the upgraded VideoMic Pro+ will be £290/$300 when it goes on sale in mid-August.
A new iOS app called Explorest wants to help you find new locations to shoot. It's limited to Singapore for now, but the app is packed full of useful location scouting features.
Nikon's D850 development announcement is extremely light on details, so we assembled a wish list of upgrades and features we'd love to see.
Nikon has announced the development of the long-awaited replacement to its full-frame D810: the D850. Nikon says that the D850 will build on the strengths of its predecessor and offer 'new technologies, features and performance enhancements.'
Lens manufacturer Voigtlander has introduced a 65mm F2 macro lens for Sony E-mount that it says "rates as one of the finest in the history of Voigtländer."
The UK released a preview of their upcoming drone safety regulations, and it looks like drone pilots will have to both register their device and pass safety awareness tests.
National Geographic photographer Bob Holmes talks about light, and why you need to learn how to 'see' and not just 'look' at your subject.
Photographer Alessandro Barteletti shares the story behind his National Geographic Italia cover, shot with a 10-year-old DSLR and an iPhone flashlight.
Fashion catalog photographers in China have some next-level models to work with. In this video, you see one model hitting 30 poses in 15 seconds as the photographer snaps away.
Photographer Paul Adshead breaks down 11 photography-related smartphone apps he couldn't live without—from a pocket light meter to a lighting diagram app.
Fast-growing Chinese flash brand Godox is teasing a brand new flash trigger... for smartphones. The Godox A1 is a 'phone flash system' that can act as both flash and 2.4GHz trigger.
On July 12, Canon opened its newest Technology and Support Center, designed to serve the motion picture industry, in Burbank, CA. DPReview got a sneak peak and takes you behind the scenes.
The Sigma 14mm F1.8 Art is truly one-of-a-kind. It offers the fastest aperture of any lens that shares its focal length, produces beautiful sunstars and is incredibly sharp to boot. If you're in the market for a fast ultrawide prime, this looks to be the one to get.
In this article, expert macro photographer Thomas Shahan shares advice for successful closeup photography of bugs, insects and small animals.
DJI's new firmware makes it difficult to fly in restricted airspace, even when you have proper clearance. Is DJI placing themselves between professionals and the FAA?
Go behind the scenes with National Geographic photographer Renan Ozturk and see what it takes to capture a dangerous, harrowing, stunning Nat Geo photo essay.
Erez Marom tells the story behind this ominous photo of the sand 'reaching up' towards the mountains at Skagsanden beach in Norway. He calls this photo 'Torment.'
DPReview staffer Carey Rose has taken the Panasonic Leica DG 15mm F1.7 along for everything from a city-side boat ride to a bachelor party across the mountains. Find out how the little Leica fared.
Canon just unveiled the largest 12-ink printer on the market. The new imagePROGRAF PRO-6000 printer can make prints from 17 all the way up to 60 inches wide.
"Standing in one of the holiest places on earth, I felt uneasy," writes Wired's Jason Parham. "Most of my fellow visitors, I realized with a brief bloom of nausea, were taking selfies."
Christopher Nolan's Dunkirk has been receiving great reviews, but it's a challenge to see it in its full glory. This handy infographic reveals the aspect ratio chaos that is wrought as the industry retreats from film.
Anti-bullying organization Ditch the Label's Annual Bullying Survey 2017 reveals yet again that Instagram, more so than any other social network, has the worst effect on youth mental health.
It's been a crazy day for innovative patent news. Apparently Sony is thinking of developing a medium format curved sensor camera.
An update to the Silkypix Raw converter fixes some bugs and adds support for several popular new cameras.
This crazy custom-built underwater camera shoots 8x10 large format film. It's supposedly "the first successful underwater 8x10 ever made," and it can be yours for $5,800... plus shipping.
Blackmagic just reveled a new accessory for their Cintel Film Scanner. The Cintel Audio and KeyKode Reader can capture KeyKode data and high-quality audio from film in real-time as it is being scanned.
A new Nikon patent shows a lens designed for a curved full-frame sensor. Could this be the high-end Nikon mirrorless camera people are hoping for?
The ability to shoot images at 1,000 fps first appeared in a Sony smartphone sensor. Now the Japanese manufacturer is using the same feature for industrial applications.
Astronomy expert and photographer Dr. Tyler Nordgren thinks you should "see your first eclipse, photograph your second." But if you do plan on taking photos this August, here are a few tips from someone who's been there.