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The replacement of macro lens Tests on NiSi 77 mm close-up lens
Author:泡泡网 [http://tu.pcpop.com/pic-849742.htm] 2013/2/22 11:32:13

The replacement of macro lens
Tests on NiSi 77 mm close-up lens

Brief introduction: NiSi close-up lens is designed by Japanese optical experts. It is made of high quality ED low refractive environmental glass that is made in Japanese, whose surface is precisely polished. Two pieces in a group reduce the dispersion effectively. Both sides of the lens are covered with multilayer broadband coating. The coating can reduce dispersion greatly. It also increases color rendition rate. What’s more, the surface of the lens is also waterproof and oil-proof.
The frame is made of aluminum material for airway. Its unique design of extinction screw thread and integrated non-pressure ring avoid the influence of light to the pressure ring. In the front of the frame uses grain extinction to effectively eliminate the stray light and reflected light. The rubber ring around the outer frame can prevent filter skid when loading or unloading, and increase the operating handle. Close-up lens is rounded with Japanese the high extinction paint to make it black. The paint can effectively eliminate the stray light edge so that it can achieve high quality stable optical performance and excellent images.
 

Both sides of the lens (the side we show is the front) are covered with multilayer broadband coating, you can see beautiful luster clearly from this angle.
 

Both sides of the lens (this time the back of the close-up lens) are covered with multilayer broadband coating, you can see beautiful luster clearly from this angle.
 

The side of NiSi 77 mm close-up lens

 

Camera lenses, whose diameter is 77mm, can install NiSi 77mm close-up lens. The picture shows the appearance of Sony 70-400G camera lens after installing NISI 77mm close-up lens.
 

What if we only have NiSi 77mm close-up lens and want to install this lens to a camera lens which its diameter is not 77mm? Do we have to buy a new close-up lens? The answer is no. The only thing you have to do is to buy a filter adapter ring, which is about 10 RMB.
 

Taking Sony 100/2.8 macro lens as an example, this lens is 55mm in diameter. Via a 55mm transforming to 77mm filter adapter ring, I install the NiSi 77mm close-up lens on this lens. The picture shows the effectiveness after installing.
 

Sony A77+70-400G lens equipped with NiSi 77mm close-up lens
A 100% partial screenshot of real shot samples

 

I equipped Sony A77+70-400G lens with NiSi 77mm close-up lens and makes it a macro lens, so that I can give a close-up to this jumping spider. Its body length is less than 1cm. We can see its real performance by this picture. The difference between this lens and a real macro lens in acutance is quite little (comparing with the last screenshot). If you do not have a macro lens and you want to take macro photographs, NiSi 77mm close-up lens will meet all your demands.
 

Sony A77+70-400G lens equipped/ unequipped with NiSi 77mm close-up lens
A 100% partial screenshot of real shot samples
Left: Not installing NiSi 77mm close-up lens , shooting at minimum focus distance (magnification is  about 1:1)
Right: Installing NiSi 77mm close-up lens , shooting at minimum focus distance (magnification is  about 2:1)
Bottom: Compared with 100% partial screenshot of real shot sample, there are no differences between the two pictures expect a little decline in acutance. But don’t forget that the NiSi 77 mm close-up lenses improve the magnification about 0.2 times. So the image quality is ok if we are not strict to acutance.

 

Evaluation conclusion/using experience of NiSi 77mm close-up lens
   The conclusion of the test:
1. When we use NiSi 77mm close-up lens. The acutance of picture are coming low
2. Chromatic dispersion and luminousness are very good.(we can not recognize difference between use or not use NiSi 77mm close-up lens)
User comments
1. NiSi 77mm close-up lens is a very good lens. 77mm diameter is suitable to put on the other telephoto lenses. Dismantle and assembling are both very easy it is a good lens close-up or telephoto both very good!
2.  The biggest trouble of NiSi 77mm close-up lens to me is that I can’t install the macro double flash lamp in the hand (Sony HVL-MT24AM). That directly causes a low success rate of taking ecological macro. For most of the time, taking ecological macro can only be finished in hand. However, even with a tripod, slight breeze or restless bugs will fail your shooting. I sincerely wish that NiSi could make some adapter rings to install the macro double flash lamp directly on the close-up lens so that the macro lens does not need to be taken. (Pictures/ passages Yuanyuan)