Pentax hd da 55 300mm review năm 2024
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All Tests Canon EOS (APS-C) Canon EOS (full F.) Nikon DX (APS-C) Nikon FX (full F.) Nikon 1 (CX) Sony Alpha (APS-C) Sony Alpha (full F.) Micro-Four-Thirds Four-Thirds Pentax K Pentax Q Samsung NX Fujifilm X Leica M DSLR Reviews PZ Rating System Lens Test FAQ Show Pentax SMC DA 55-300mm f/4-5.8 ED - Review / Test Report - Analysis Lens Reviews - Pentax Article Index Introduction Analysis Sample Images & Verdict Page 2 of 3
DistortionThe Pentax lens exhibits negligible distortion at 55m. In the 100-300mm range you can expect a medium degree of pincushion distortion which may be visible at times in field conditions. Move the mouse cursor over the focal length text marks below to observe the respective distortion 55mm 100mm 200mm 300mm VignettingTypical for most lenses with an APS-C format coverage the Pentax lens shows stronger vignetting at max. apertures (~0.8EV). The problem is largely reduced and no longer field relevant when closing the aperture by 1 f-stop. MTF (resolution)The Pentax 55-300mm f/4-5.8 ED is capable of producing quite respectable resolution figures throughout the focal length range. The center performance is generally on very good level with a rather typical quality penalty towards the long end of the zoom range. The border performance is a bit soft at max. aperture but the quality can be boosted when stopping down a little. The contrast in field images is pretty snappy - surely a positive effect from the ED element(s). The tested sample showed an optical problem (centering) at 55mm which may have polluted the figures somewhat at this setting. Please note that the MTF results are not directly comparable across the different systems! Below is a simplified summary of the formal findings. The chart shows line widths per picture height (LW/PH) which can be taken as a measure for sharpness. If you want to know more about the MTF50 figures you may check out the corresponding Imatest Explanations This lens for Pentax APS-C format DSLRs ticks all the right boxes for photographers who want powerful telephoto reach without getting weighed down in the process. With a retractable design, it shrinks to just 89mm length for convenient stowage and it weighs in at just 442g. That’s despite giving a lengthy 82.5-450mm effective zoom range in full-frame terms, stretching into super-telephoto territory. Build quality, image quality and all-round performance are very good, making the lens very good value at the price. Pros
Cons
Why you can trust Digital Camera World Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out how we test. The HD PENTAX-DA 55-300MM F4.5-6.3 ED PLM WR RE gives long telephoto reach from an unusually compact and lightweight package. The effective zoom range gets a 1.5x boost thanks to the APS-C crop factor of Pentax cameras for which it’s designed. This makes it ideal for walkabout and travel photography, as well as for prolonged periods of action, sports and wildlife photography without the need for a tripod. SpecificationsMount: Pentax K (APS-C) Full frame: No Autofocus: Yes Stabilization: No Lens construction: 14 elements in 11 groups Angle of view: 29-5.4 degrees Diaphragm blades: 9 Minimum aperture: f/22-32 Minimum focusing distance: 0.93m Maximum magnification ratio: 0.3x Filter size: 58mm Dimensions: 77x89mm Weight: 442g Key featuresDespite being launched around the same time as Pentax’s first full-frame DSLR, this lens is designed exclusively for APS-C format cameras. The required size of the image circle is therefore smaller, and the lens has a slightly slower aperture rating than typical 70-300mm tele zooms for DSLRs, at f/4.5-6.3. These factors enable a smaller and more lightweight build but compactness is further boosted by a crafty design that’s based on a retractable barrel. With a retracted length of just 89mm, it takes up less than two-thirds of the room of most competing lenses for stowage. And whether it’s in use or in your gadget bag, it’s much lighter than most, at just 442g. The Pentax beats 70-300mm lenses for overall zoom range, enabling a wider viewing angle on APS-C cameras, at their shortest focal length. And while it’s a lightweight in physical terms, there’s no shortage of features and build quality is very good, complete with a full set of weather-seals. PerformanceAutofocus is based on a stepping-motor system which is very quick and quiet, although not completely silent. Even so, it’s blissfully quiet compared with many other Pentax lenses. One thing that’s lacking is an optical image stabilizer. Pentax DSLR bodies feature built-in sensor-shift stabilization, but the addition of optical stabilization can give a boost to effectiveness, especially in telephoto lenses. Image quality is very good overall, with impressive contrast and good sharpness throughout most of the zoom range, although it drops off a bit at the long end. Lab resultsWe run a range of lab tests under controlled conditions, using the Imatest Master testing suite. Photos of test charts are taken across the range of apertures and zooms (where available), then analyzed for sharpness, distortion and chromatic aberrations. We use Imatest SFR (spatial frequency response) charts and analysis software to plot lens resolution at the center of the image frame, corners and mid-point distances, across the range of aperture settings and, with zoom lenses, at four different focal lengths. The tests also measure distortion and color fringing (chromatic aberration). Sharpness: (Image credit: Future) (Image credit: Future) Peaking at a focal length of 100mm, sharpness drops off slightly at the short end and more noticeably at 200-300mm. Fringing: (Image credit: Future) Color fringing is generally quite minimal can be a little noticeable at both ends of the zoom range. Distortion: (Image credit: Future) Despite the reduced 55mm focal length compared with 70-300mm lenses, barrel distortion is well controlled at the short end, and there’s only slight pincushion at longer settings. VerdictThis lens for Pentax APS-C format DSLRs ticks all the right boxes for photographers who want powerful telephoto reach without getting weighed down in the process. With a retractable design, it shrinks to just 89mm length for convenient stowage and it weighs in at just 442g. That’s despite giving a lengthy 82.5-450mm effective zoom range in full-frame terms, stretching into super-telephoto territory. Build quality, image quality and all-round performance are very good, making the lens very good value at the price. Read more: • Best camera lenses to get • Best Canon lenses • Best Nikon lenses • Best Sony lenses Thank you for reading 5 articles this month* Join now for unlimited access Enjoy your first month for just £1 / $1 / €1 *Read 5 free articles per month without a subscription
Join now for unlimited access Try first month for just £1 / $1 / €1 Matthew Richards is a photographer and journalist who has spent years using and reviewing all manner of photo gear. He is Digital Camera World's principal lens reviewer – and has tested more primes and zooms than most people have had hot dinners! His expertise with equipment doesn’t end there, though. He is also an encyclopedia when it comes to all manner of cameras, camera holsters and bags, flashguns, tripods and heads, printers, papers and inks, and just about anything imaging-related. What does DA mean in Pentax lenses?All currently-available Pentax lenses are members of the following series: DA (digital, APS-C crop format); DA L (affordable digital kit); D FA (full-frame, digital optimized); and. FA (full-frame, film-era) series. What does 55 300mm lens mean?The 55-300 is a telephoto zoom. This is the type of lens most people grab to get "more reach", or to get closer to faraway subjects. You can shoot the moon with it, although a supertelephoto (something longer than 300mm) would probably give higher image quality for those types of shots. |
