sigma 55-200mm vs tamron 18-200mm日文翻譯
The last time, as a hot news report edition “[tamron] V.S. Sigma high powered zoom confrontation” was delivered, but from sigma “there is an individual defective possibility because, we want making exchange with another lens”, with it received communication. In addition, our stomach [tamron] which is purchased 18 - to squeeze 200mm zoom, because in opening description of the picture right side was somewhat sweet, with the lens which borrowing starts doing, it tried doing comparison photographing again from [tamron].
As for the result seeing, with sort, focal length of the tele edge of sigma 18-200mm F3.5-6.3DC is not full in 200mm, (angle of view is wide) as for, was not specification of product somehow, it is thought that there was a some trouble in the lens which was offered to the previous test. In addition, [tamuron] 18-200mm F3.5-6.3XR DiII and as for description of wide edge contraction opening at the extent which mistakes, you can obtain the description which does not have this extent disorder, if, our stomach the lens which is purchased seeing the time, that you think whether it probably will put out to adjustment.
Because both lens has adopted inner focusing, with approach photographing angle of view is taken widely vis-a-vis focal length, but [tamuron] compared to sigma the tendency is more remarkable. Because of that, when from the same photographing position you take compare in the zoom tele edge and, [tamuron] is taken more largely than sigma. By the way, as for sigma 55-200mm F4-5.6 zoom, not to be inner focusing, to draw out, because it is formula, even with short-range photographing there is no change in angle of view, as many as 2 of high powered zoom compared to it is possible even with the same 200mm to copy with rise.
In addition, [tamron] 18-200mm zoom and sigma 18-200mm zoom, as for nominal shortest photographing distance with 45cm, at this distance is taken after all [tamron] more largely than sigma. In other words, maximum photographing magnification ratio is high. However, sigma 18-200mm in the zoom tele edge could approach to approximately 34cm. Getting near to 34cm in the zoom tele edge, if it photographs, [tamron] compared to sigma barely exceeds maximum photographing magnification ratio.
When in trial, zoom it does on wide side, with 34cm as for focus it stops being agreeable, but in the wide edge getting near again to near 34cm, the combination indicator lights up. As a high powered zoom it is the shortest photographing distance which should be surprised.
Comparison of [tamron] 18-200mm F3.5-6.3, sigma 18-200mm F3.5-6.3 and sigma 55-200mm F4-5.6
The last time, angle of view of sigma 18-200mm zoom nominal value to be large was a difference, [tamron] AF18-200mm zoom in wide edge contraction opening the image had been disordered at the picture right side. Then, it tried re-testing both lens with the new another individual. It is the lens where both is lent out from the manufacturer. It drew out for comparing the angle of view of the tele edge and, it tried photographing collectively even with the sigma 55-200mm zoom which adopts the focusing system of formula.
As for the result with sort of viewing, also 3 these lenses as for angle of view of the tele edge almost the same. Description of wide edge contraction opening of [tamuron], more satisfactory result than the private property which the last time is tested is obtained.
As for picture quality comparison of contraction opening, with the AF leaving of the camera the result does not stabilize. There is no precision which is sufficient for the AF module of the camera, or the image surface having curved delicately, but in the picture central part and the periphery there is the delicate difference in focus position, the limits where both go into depth of field being very narrow, it is and description of the periphery being disordered with influence of the low-pass filter and the like obscurity, in any case the picture center although focus is agreeable, often you can see that, the vicinity flows, even with other wide zoom not just this sigma 18-200mm zoom. Because of that, this way squeezing and while to manual focusing, focus position in gradually the case where it does the descriptive test of opening, changing changing it photographs, most it selects the picture where you can obtain the success.
[tamron] 18-200mm also also sigma 18-200mm has adopted inner focusing system. Because the ball before the lens not to be drawn out at the time of focusing total length not changing with feature, does not have the necessity to draw out the ball before the big, to be easy to assure the acceleration of focusing speed, because either the filter framework does not turn, the star hood which can do efficient shade can be adopted.
Is taken simply, angle of view widely at the time of approach photographing. In order to verify whether some, angle of view becomes wide, it tried comparing with the sigma 55-200mm of drawing out type. Photographing distance is the shortest photographing distance 1.1m of 55-200mm. From the same position photographs in the same focal length limits as for both 18-200mm which adopt inner focusing in spite, magnification ratio is lower than 55-200mm. In addition, sigma barely magnification ratio is lower than [tamron].
It tried photographing with 45cm which is nominal shortest photographing distance next. Approaching to here, if it photographs, photographing magnification ratio becomes like 55-200mm. Sigma as for photographing magnification ratio is lower simply, after all. But, because really in the zoom tele edge to come near to subject it is possible sigma 18-200mm to approximately 34cm, approaching to as much as possible and subject, if it photographs, sigma as for photographing magnification ratio becomes high.
都F2.8, 用DPP轉出, 只調EV, 銳利度則是350D的deafult, 1.
crop後, 800x600
對焦點 100% crop
crop後, 800x600
對焦點 100% crop
上面兩張為陽光從前上方下來, 應有點算逆光, 感覺顏色淡了點, 而且是近距離拍攝(<2m), 個人覺得這隻在200mm弱了一點的地方.
crop後, 800x600
對焦點 100% crop
這就是遠距離, 且順光, 感覺就比上面好了不少...
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從去年時12月換這隻, 用到現在約一年, 感覺最大的缺陷近距離拍攝, 那個200mm F2.8有點CA的感覺讓整體的畫質銳利度打折不少.
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