The mechanical properties of IS E A IS metals determine the range of usefulness of a material and establish the service life that can be expected. Mechanical properties are also used to help classify and identify material. The physical properties of IS E A IS include high strength, low weight, durability, ductility and resistance to corrosion. Steel, as we all know, offers great strength though it is light in weight.
In fact, the ratio of strength to weight for steel is the lowest than any other building material available to us. Portal-type Processing Center. Floor-type Milling-boring Machine. E-mail: [email protected]. For prints that are impressive, eye catching and vividly expressive. Suitable for copiers, laser printers and inkjet printers. Provide your booking code and email address you used for the registration, we will re-send the confirmation email to you.
Consumer Business ENG. Consumer Switch to: Business. Consumer Business. Where to Buy. TCO Calculator. Get Support. Photo Library. Low Cost Cartridges. Compact and Lightweight. Auto Power ON. Related Pages. With a little manual tweaking, we obtained much better results, and Imatest recognized more density steps, but the net results were still weak when compared to competing cameras. The results of the manual tweaking are reflected in the table below.
The net result was that the E performed rather poorly when compared against most current DSLR models, with a full f-stop less dynamic range than anything currently on the market. To get some perspective, here's a summary of the Olympus E's dynamic range performance, and how it compares to other digital SLRs that we also have Imatest dynamic range data for. Results are arranged in order of decreasing dynamic range at the "High" quality level.
The results shown in the table are interesting. One of the first things that struck me when I initially looked at test data for a wide range of d-SLRs, was that here again, purely analytical measurements don't necessarily correlate all that well with actual photographic experience. There's no question that the Fuji S3 Pro deserves its place atop the list, as its unique "SR" technology does indeed deliver a very obvious improvement in tonal range in the highlight portion of the tonal scale.
I was surprised to see the analytical results place the Olympus EVOLT as highly as they did, given that our sense of that camera's images was that they were in fact noisier than those of many other d-SLRs that we looked at. In the other direction, I was quite surprised to see the Nikon D2x place as low on the listings as it did, given that we found that camera's shadow detail to be little short of amazing.
One thing that's going on here though, is that we tested each camera at its lowest ISO setting, which should produce best-case noise levels. This is in fact what many photographers will be most interested in, but it does perhaps place some of the Nikons like the D40 at a disadvantage, as their lowest ISO setting is , as compared to the ISO settings available on most other models.
Regardless of the positions of the other cameras though, the Olympus E does appear to offer rather poor dynamic range, the one notably negative mark against what is otherwise a good-performing consumer SLR. As I always say though, at the end of the day I think you have to take the figures here with a grain of salt, and look at actual images with your own eyes to see what you make of each camera's tonal range and noise levels.
We'll continue performing these dynamic range tests on the digital SLRs that we review, but just as with the laboratory resolution target results , we suggest that you not rely on them exclusively for making your purchase decisions.
The chart above shows consolidated results from spatial frequency response measurements in both the horizontal and vertical axes. The "MTF 50" numbers tend to correlate best with visual perceptions of sharpness, so those are what I focus on here.
The uncorrected resolution figures are 1, line widths per picture height in the horizontal direction corresponding to the vertically-oriented edge , and 1, lines along the vertical axis corresponding to the horizontally-oriented edge , both on the low side. To see what's going on, refer to the plots below, which show the actual edge profiles for both horizontal and vertical edges, in both their original and corrected forms.
Here, you can see that there's a modest in-camera sharpening applied the slight bump at the top ends of the black curves , that the standard sharpening operator increases further. Imatest complained that we were clipping the shadows a bit here which would actually tend to improve the apparent edge sharpness somewhat , but that's just a consequence of the E's high contrast.
We couldn't eliminate the shadow clipping without losing the highlights. Here's some of the results produced by Imatest for the Olympus E Color Accuracy. Color Analysis. Gray Patch Tone and Noise Analysis.
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