Talking about the lens, the topic that will never be avoided is the original factory and the deputy factory. The original lens always gives people a good image quality, compatibility, and organic correction, and the corresponding price will be more expensive; while the image given by the vice factory is imaging is weaker than the original, compatibility will also be Due to individual shots, there is no support for in-camera correction, but the price is more close to the people and higher than the price (except for Zeiss and other associates). However, there is no absolute reason. As one of the three major lens sub-factories of Japan, Sigma took the lead in challenging the Canon Nikon and other original big brothers in the imaging industry. The launch of the Art lens also surprised everyone, and some shots even exceeded the original factory. (Of course, the price will also rise accordingly); and Tamron is not willing to, after the original zoom on the basis of a strong focus on the fixed-focus market for a new development, launched the new SP series lens the same main optical performance.
Although Tamron has always been relatively strong in zooming, especially in large zooms, it does not mean that there is no definitive focus lens for Dragons. Especially in the macro field, the Dragon 90 micros have been from the first generation 27 years ago. Accepted by the user. Especially in 2004, the SP AF90mm F/2.8Di [Model 272E] launched by Tamron officially completed the 90-to-Di transformation (digital optimization), and more digital users found new options outside the original factory micro. .
With the gradual increase of the time for the 272E service, some key technologies appear to be keeping pace with the market, and the subsequent SP 90mm F/2.8 Di MACRO 1:1 VC USD [Model F004] officially entered the stage of history. Added VC Optical Image Stabilizer (Sonic mouth without anti-shake) and USD Ultrasonic Motor, all of the original two weaknesses were all immediately compensated, not only that, eBAND (Ultra Wide Spectrum Anti-Reflection) coating as well as IF Internal Focus and Full Time Manual focusing has enabled Tamron's new 90-micron to gain further improvements in imaging and ease of use.
In 2016, Tamron once again updated its own 90 micro, SP 90mm F/2.8 Di MACRO 1:1 VC USD [Model F017]. From the specific model and the previous generation F004 no difference, the same 11 groups of 14 structures, also contains two XLD and one LD special lenses, the same eBAND ultra-wide spectrum multi-angle anti-reflection coating. This upgrade is unlike anything from 272E to F004. It is more sublimation than ever. Upgraded VC optical image stabilization adds XY motion compensation to further enhance stability. The motor control program has also been improved in focusing speed and accuracy; the first-ever dust-proof and drip-proof structure has stronger protection against dust and water vapor than the original simple anti-drop structure, and can be used with the first lens of the former group. High-durability fluorine coating technology that effectively prevents condensation and oil contamination, achieving a full range of protection.
See "Fei Yao Jin" see the new SP series
In terms of appearance, SP 90mm F/2.8 Di MACRO 1:1 VC USD [Model F017] adopts the family design of the SP series, and the biggest feature is the "Glorious Gold" logo ring from the back of the lens, like a Canon. The red circle and the Nikon gold circle represent the highest optical quality of Tamron.
In addition to the “Glowing Gold†logo ring that everyone can remember at a glance, the metal material used in the lens body also shows the high quality of the new SP series lens. And the position and feel of the switch are also more reasonable than before.
In addition to these obvious changes, the F017 also has some small improvements in size and aperture compared to the F004, especially since the filter aperture has become φ62mm. The old 90-micron user needs to incorporate the original Φ58mm filter when choosing to upgrade the lens. Purchased a new filter.
Of course, no matter what the appearance looks like, the feel and control of the actual use are the most important. The F017's metallic feel is very hard, and the 5D3 used in this test complement each other. The end is very stable on the hand. The redesigned switch position is exactly in the position of the left thumb. After using the custom, the three switches can be used to perform blind operations when shooting.
Fully open image quality reflects the strength of the lens
Macro lens pays attention to a resolving power. As the latest generation of Dragon Classic's 90-micron classic, plus the new SP series of main optical quality, it is believed that the performance of F017 won't disappoint us, and the actual measured results are also the same. Under the full aperture, it has already demonstrated a very good analytical level; after the first aperture, the performance of F017 tends to peak, and this optimal resolving performance continues until F11 begins to decline again; the minimum aperture performance comparison In general, but this is also a common problem in all shots. Before that, the test camera used this time was the Canon 5D3. Since there are only about 22.3 million effective pixels for the 5D3, it will have more or less influence on the F017 test result. It is believed that it has about 50.6 million effective pixels of Canon 5DSR will reach another resolution level.
Macros are called macros to make clearer shots of smaller objects. In other words, you can shoot something big enough. The magnification of F017 is 1:1, which means we can project objects of the same size on the CMOS (for example, 5D3 can be used with F017 to remake another 5D3 CMOS can shoot full screen). The following set of photos is Shooting at the closest focusing distance, then zooming in on the focal area 100%, the microscopic world is just before us. Again, higher pixel cameras like the Canon 5DSR will get better macro performance at this time.
"Knife sharp milk" is not an exaggeration
Of course, having a good resolving power does not mean that you can shoot good macro works, because first of all we need to make it clear. Of course, tripods are necessary for macro photography, especially studio macro shooting. As more and more quasi-professional users start to pay attention to the macro lens, hand-held shooting is gradually accepted by everyone. At this time, the anti-shake effect appears. Tamron F017 can achieve a 3.5-speed shake compensation level according to the standard data given by the official. Of course, this standard will fluctuate because of the user's actual hand-held stability, and I don't have an "Iron hand" or an ordinary standard. Stability can basically represent most users. From the results, there is no problem with anti-shake 3 gear, and 4 gears do not allow me to do it all, and we can get a certain success rate in the 2 to 3 gears between 3 and 4 gears. About 50%, that is, the actual anti-shake performance of Dragon F017 can meet our expectations.
In addition to making sure that the object is clearly photographed, the macro feature of the macro head is that the depth of field is very shallow, which can create the effect of background blurring, that is, the degree of softness outside the focus is also very important. The measured results show that the F017's out-of-focus transition is natural and there is no obvious bilinearity. Plus the 9-aperture aperture blade creates a circular flare. The overall perception is very good. We can't reach the standard of "sharp sharpening" in everyone's hearts. ? See for yourself!
Can't ask for more
At the time of summing up, we have already seen the performance of the Tamron SP 90mm F/2.8 Di MACRO 1:1 VC USD [Model F017] in various tests. All aspects are excellent and there are no shortcomings. As for the actual comparison with F004 that we are more concerned about, the generation I did not use, so it is difficult to give a subjective shooting experience, but objectively speaking like what I said before, although not like the big innovation from 272E to F004 However, F004 has been further strengthened in all aspects. But if you are a 272E user, it is safe to replace it. After all, this is what I have used. F017 is really more than just a 272E in focusing speed, resolution, and suppression of dispersion.
The last part is proofs, there are outdoor flowers close-up, there are indoor still life close-up, we can feel under the new Dragon Dragon SP90 micro-shooting charm.
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