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Le test complet de cet objectif est à lire sur www.nikonpassion.com/test-tamron-17-35-zoom-expert-pro
Tripod
IS mode OFF
No handshake, no wind.
Some preliminary conclusions after these tests about “best performance setting”
My objective was to find the best performance setting for outdoors for my camera.
NOTE: to convert RAF files to JPG I got much sharper results, as well as more noise, using either Lightroom 4 or TheraPee 4 (an open and free software). Setting “extreme sharpness” in the provided software also helps.
My camera shows orbs and in RAW is not as sharp as many other people X10s that show to be amazing out of the box (I am thinking to send it to the service by the way).
Sharpness, it was my main concern and with my camera got the best results using: EXR HD mode but also P mode worked ok, M size, DR 100 and speed over 1/100 if possible. Neither RAW mode nor Large size did achieve the degree of sharpness reached by this setting.
I shoot with IS in mode 2 when hand holding the camera, but I turn it OFF if using a tripod.
To avoid blowing up the highlights I set: EV -0,3, highlights low and Astia film setting.
To avoid “orbs” just keep apart from maximum aperture settings in takes with strong lights over a dark background.
I like to shoot at ISO 100 if possible, going up, even at just ISO 200, show differences. Anyway in very low light I go until ISO 800 in AUTO mode.
I like Astia film setting, colors are a little warmer but balanced, contrast and saturation are not exaggerated. Please consider that RAW mode is not available in EXR mode and/or M size and I need them.
No particular advises over AF modes, they worked perfectly, even in low light.
Shoot lower than 1/800 unless mandatory. I am not convinced about this point, but for sure it is better to go 1/600 at ISO 100 than 1/1200 at ISO 200 (shooting still objects as buildings). It means to avoid using AUTO ISO mode.
Testing the deployment of the Sentinel-1A radar antenna in the cleanroom at Thales Alenia Space in Cannes, France. As the satellite is designed to operate in orbit, it is hung from a structure during tests to simulate weightlessness.
Credits: ESA–S. Corvaja, 2014
LBL Physics CCD Test Lab.
credit: Lawrence Berkeley Nat'l Lab - Roy Kaltschmidt, photographer
XBD201009-01141-16
in 1950, President Harry Truman established the Nevada Test Site in the middle of Nevada. With the Cold War descending over the World, the United States wanted a test site for nuclear weapons closer than the distant islands of the Pacific Proving Grounds, and Nevada was chosen as the location. From 1951-1992 the Nevada Test Site was the main nuclear testing location in the United States, 928 total, 100 of which were above ground. The mushroom clouds could be seen in Downtown Las Vegas, which soon became popular tourist attractions. During the above-ground tests, the US Army also analyzed survivability of various buildings, fortifications, and shelters, using high-speed cameras. A particularly bad nuclear test in 1953, Upshot-Knothole Harry (later known as "Dirty Harry"), was carried by the wind to and contaminated St. George, Utah, leading to a massive spike in malignant cancer rates (it may also have led to the deaths of many of the cast and crew of the film "The Conqueror", including actor John Wayne and actress Susan Hayward). As far as is known, surface testing stopped in 1962 and underground testing in 1992. The Nevada Test Site, occasionally opened to the public, remains highly secretive, and subcritical tests are said to continue.
Nearby is Yucca Mountain, the controversial site of the would-be National Nuclear Repository. It was approved by Congress in 2002 after 20 years of debates and litigation to house up to 70,000 metric tons of spent nuclear fuel. Nevadans as a whole were opposed to the plan, especially the 1987 "Screw Nevada Bill" that halted storage studies at other sites in Washington and Texas, though Nye County where the facilities would be located supported the effort for jobs and a direct county finance support plan. In response, Nevada created Bullfrog County, population 0, to force the funds to go to the state level. It was declared unconstitutional a year later. As for Yucca Mountain Nuclear Repository Site, it was quietly defunded in 2011, effectively putting the effort on indefinite hold.
Mercury, Nevada
This was a test shoot to try an idea. i didnt have much time to pull it off. but it looks cool. i know there are a few thing to fix.
Strobist:
I walked around the front of the car firing the flash manually. While a FireDancer from the other shots did his thing around the car. Do not try this at home. lol Power at about 1/4 . I should off done like 2 more one in the nose of the car and the back bumper. Live and learn.
Finally this photo let into the creation of this full blown set:
All done freehand, no plan, just proving that the tools (and idea) will work. I'm pleased. Of course this one is now useless to me, so time to go empty out some more eggs and start planning before carving.
Two immersion heaters were used to test the operation of the electrical/electronics side of the project.
More info: projects.armandas.lt/meng-group-project.html
Single Exposure Ambient. Basic edit in Lightroom
Sony a6000 hand held with 16-50 "Kit Lens"
Trying something new, a6000 Mirrorless, all ambient and hand held to see what this camera can do.. i must say I was pretty impressed as I got about 40 shots in 30 minutes just walking around in 3 model homes.. Not a paying gig so please understand this was more of a test..
The Moulton Bicycle Company has a custom-built cycle test-track located in the grounds of 'The Hall' in Bradford on Avon.
The Hall is the home of the late Alex Moulton (1920 - 2012) and where the Moulton Bicycle Company is based.
Photos here were shot using old Canon FL/FD lenses mounted onto the new compact mirrorless full frame Sony Alpha A7 released on November 13, 2013 in Japan. The lenses are all manual focus due to the fact they are old legacy prime lenses. The Canon lenses used for this test:
FD 35mm, f2
FL 50mm, f1.4
FD 135mm, f3.5
FD 135mm, f3.5 (with PL filter)
This photo was taken using the portrait focal length, FD 135mm, f3.5 lens.
A toy? Not really, this lens can really deliver amazingly sharp results!
--- Lessons learned:
+ best way to get the grips is to use the lens with the cam (in liveview) tethered to a tv set via DVI
+ the lens should not be used on maximum tilt -- you cannot get sharp results with this adjustment
+ the two lenses in the Lensbaby are not coated, backlight will lead to overlit blurry results ...
+ This is a 50 mm lens, minimum object distance is approx 0,6 meters ...
+ shots were take with the 4.0 aperture, ... 5.6 has a wider sweet spot, but less wow effect
+ works fine in Av-Mode
--- This is how focusing works:
Point the optical axis of the lens **exactly** towards the spot you want to focus; adjust focus ring - if possible in zoomed liveview mode.
--- This is how it not works:
Leave the lens as-is (no tilting); try to focus on an object in the corner of the image via turning the focusing wheel.
--- One problem I came across:
The 5DMkII works fine with this lens in Av mode, even better with additional liveview, but does *not* adjust exposure in *zoomed* liveview! => Firstly wait for exposure adjustment, then zoom in, adjust focus, if possible, zoom out again, shoot. :-)
This is a test shot of Bridgelux Vero 18 35W LED module, p/n BXRC-30H4000-F-03. This LED is advertised as having CRI 97 and 4000 lm luminous flux, which is equivalent to characteristics of 150W halogen lamp. Color temperature should be about 3000K.
This photo was taken in complete darkness without any optics covering LED module. Paper with pastel swatches was located in about 100mm from the module and set at 45º to its axis. Camera was set to 3200K color temperature and I had to close the diaphragm pretty much to get this paper properly exposed.
As you can see, color balance is a bit off the uniform in reds, but it's normal for high CRI LEDs because of wider "red hump" in their spectrum. At least, it's not worse than "orange hump" of halogens. 3000K seems to be real number too. Swatches are bright and equally lit, which is impossible with regular LEDs, having CRI 72 or even worse, which is equivalent to cheap fluorescent tubes.
To prevent overheating, I've used HP server CPU passive heatsink, p/n 409498-001 (bought used one from eBay for less than $10). It keeps the LED temperature just above the body temperature, so it's a kind of overhead, which I expected - this heatsink is intended for CPUs with TDP more than 65W. It means, I can use smaller cylindrical one with small (40mm) fan.