| sent on February 02, 2017
Pros: Constructive quality, incredible magnifications without the need for additional accessories
Cons: Difficulty of use, short distance focus, hard-to-get-out.
Opinion: I bought this used optics, fascinated by the photos taken. Once mounted on my 6d I had to tune not only to figure out just how to focus the subject to be framed, an operation that should be done simply by approaching or moving the lens and then the machine because the ring actually acts only on the enlargements by stretching the lens that Closed has a 1/1 ratio and elongated 1 to 5. All this freehand involves a real treasure hunt in the viewfinder. If you can never point the subject out of the "nothing" and scare you too! The depth of field is very limited already to the lens closed at 1 / 1 and photographing Very small objects like the face of a lego doll, you have to focus your eyes and you will get a portrait with a gorgeous bocked. For 1/1 it can still be used without flash or additional lights, but after 2 days I went to buy an annular macro flash that becomes indispensable also thanks to the pilot light that facilitates hunting all framedra. RnAnd working beyond the ratio 1/1 also change the relationship with the diaphragm completely disfiguring the relationship with the various "f" because, from what I understand, they also multiply .... and you have to experience the right opening finding the Best compromise between detail, diffraction, depth of field. If you photograph something bigger than the needle of a needle, you need to use the not very easy technique of focus stacking. To do this, you need to equip yourself with quality micrometric slides, because with the economical and medium-level ones (including manfrotto) you only work 1/1, after serving something stable and precise, very accurate. By contacting here some makers of the site, I found that they use lab accessories such as Newport San Diego sleds costing hundreds of euros. There are also motorized systems that speed up operations. I, while waiting to buy a motorized sled, I have realized a craftsman's bench with precision linear guides and aThreaded bar to which I then applied a large adjustment knob with an indicator, and with the help of an old stand, I started experimenting with the first stacking focus, getting encouraging results but still far from the photos you see here published . The slide works well, but the real difficulty is to place the bug properly, illuminate it etc etc. Because as already mentioned in magnifying enlargements, the focusing distance with the subject becomes dim, and so the annular flash touches the plane of support of the subject, the tailgate, etc. and hinders the operations. We need to work surgically with tweezers and a lot of patience. All this is simple by photographing dead objects or animals. With living beings, you really need to be very good and expert in speeding up all the operations, and then it is essential to have a complete micrometric equipment, a 2-axle sledge, a rackhead, etc. It is, however, incredible that it will make you spend the whole dayBorn also photograph a simple dead fly. |
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