View allAll Photos Tagged Testing.
I was firing at the ceiling. In this room it's about two stories tall, and I could pretty accurately hit the plate where a fan would go, if we got around to installing a fan instead of modding Nerf guns.
Test Site Rotterdam
Test Site Rotterdam is a project by the IABR and the architecture office ZUS that focuses on the Rotterdam Central District. Vitality must be restored to this urban district. Although in today’s market economy, it’s hard to say when that will happen. Experiments with strategies to revitalize the heart of the city using alternative forms of funding, planning processes and design tools are taking place at Test Site Rotterdam. The projects include the Roof Gardens, Park Pompenburg and an elevated walkway (the Luchtsingel). Test Site Rotterdam runs until 2014 and is one of the platforms on which the 6th IABR is being developed.
This is a test series with my new toy: Sigma 18-250mm DC OS HSM. I used to have the prior version (18-200) and I think it is a very nice "always-on" travel lens.
ISO 200, f4.5, 1/80, 18mm, auto white balance
Nikkor AF-S DX 18-105/3.5 - 5.6 G ED VR
no image editing. picture directly out of cam!
I wrote an article about the test. Please check here for German speakers: www.doreen.es/2008/09/09/nikon-d90-test/
PS: Sorry I didn't care about image details // Bitte nicht auf Bildausschnitte achten, hab ich auch nicht gemacht ;)
a quick test of the Nikon 28mm f2.8 on the A7R. I already had a Vivatar 28 with a Canon mount but I had purchased a variable ND filter mount and it was for Nikon. (most of my fast lenses were Nikon before I sold them) I'll use this combo for some long exposure experiments...
Today, I took my 85mm ƒ/1.8 lens out for a little test session in the real world. I set up a tripod off the side of our local Catholic church, and proceeded to shoot the same scene with AF on, in AE (shutter priority) mode, with shots starting at ƒ/1.8 and going all the way to ƒ/22 in 1/3 ƒ-stop steps.
The objective was to see where optimum sharpness was to be found; as a bonus, I also learned how chromatic aberration behaves in this lens.
Peak sharpness is, without any question at all, found at ƒ/6.3, in the image you see here. Sharpness is excellent at ƒ/4, then shows small increases up to ƒ/6.3. Then sharpness begins to roll off gently at ƒ/7.1 and ƒ/8.0, shows a distinct though not yet highly objectionable decrease at ƒ/9.0, and the absolutely takes a dump at ƒ/10. This makes a lot of sense to me because with the 50D's 4.7 um pixel pitch, diffraction begins to take effect at ƒ/7.6 (not an available setting on the 50D, btw) and by ƒ/10, the Airy disc has far exceeded the diameter of a single sensel — so we're well into diffraction-caused blur by ƒ/10, regardless of the len's other sharpness-related factors.
Chromatic aberration is strongly evident (mostly at the left edge of the large tree at foreground center where the dark tree intersects the well illuminated concrete of the building at this angle) starting at ƒ/1.8, and reduces just a little bit with every 1/3-stop taken until ƒ/13, where I cannot see any remaining purple fringing. Unfortunately, this is far beyond the objectively determined peak sharpness of the lens at ƒ/6.3. If you look at the tree in this image, you will see some CA.
So... in high contrast situations where I feel I can give up some sharpness, I'll be thinking ƒ/13, light permitting, and when I'm looking for max detail, it'll be ƒ/6.3 to about ƒ/5.6. The best compromise -- the setting where sharpness has not fallen off much and CA reduction is as high as possible at the same time -- is about ƒ/8.
This image, as far as I can tell, demonstrates the best sharpness that can be shot with this lens and camera. It is a consequence of:
EOS 50D, Canon EF 85mm ƒ/1.8 USM prime @ ƒ/6.3, ISO 100, 1/200th sec. exposure, tripod, 2 sec shutter delay.
RAW to JPEG conversion with Aperture.
Test av ti redningsflåter sammen med "Seilas" og "Båtliv". Det ble testet to redningsflåter fra hver av merkene Eurovinil, Viking, Zodiac, Plastimo og Arimar.
Dette er Zodiac sin kystflåte. Testen viste at dette var en mindre god flåte. Det var umulig å få på teltstengene, nødrakettene var våte og lyset funket ikke.
nikon n65 +
nikon af nikkor 28-80mm f3.3-5.6 G +
fujifilm fujicolor c200
no post processing or cropping, just as scanned.
taken at aperture priority and auto-focus modes.
makinenin fonksiyonlarını test etmek amacıyla hızlıca çektiğim fotoğraflardan biri.
herhangi bir oynama veya kırpma yok, tarayıcıdan ne çıktıysa o.
diyafram öncelikli ve auto-focus modlarında çekildi.
An archaeologist excavates using a shovel test on Fort McCoy. Shovel testing is the typical method of finding archaeological materials at Fort McCoy. More than 10,000 acres were surveyed during FY08 and FY09.
These are for a project-in-progress, but I like the way they were subconsciously assembled when I moved them.
This is one of the test stands at work. They used to test SSMEs on it, but now it sits as a monument to what it once was.
Konsulent for forebyggende arbeid Anne Kristine Nergaard tester oppblåsbare redningsvester ved å blåse dem opp manuelt.
Test Media; Beef Shoulder aprox 8 to 9 inches of soft Tissue and Bone, wrapped in medium weight denim material.
Firearm used; Colt Series 70
Officers Mod.
Distance fired from 15ft
Ammunition tested, .45 ACP
Top row, left to right
Results
Federal HST 230gr +P, performed perfectly, full expansion (.59) and 99% weight retention.
Hornady Critical Duty 220gr , Performed Perfectly, full expansion (.61) and 99% weight retention.
Winchester Ranger 230gr, Once again perfect performance, Expansion to (.52) 98% weight retention.
Bottom row , left to right
Hornady Critical Defense 185gr, Expansion to (.47) 75% weight retention (Did not exit soft tissue, lodged in the fat)
Dynamite Research Technologies 150gr EXP, Failure did not expand.100% weight retention, Hollow point area filled with denim material and exited tissue with terminal velocity..Not recommended
Speer Gold Dot 230gr, This round hit the shoulder bone center and square, the wound channel was massive and shattered the beef leg bone, and the bullet disintegrated and did not exit soft tissue, recovered weight from the three largest pieces totaled 192.3gr,so the weight retention was still very good, as far as my personal opinion this is still a great carry round for the .45ACP platform.
My choice is still the Federal HST and the Hornady Critical Duty as my carry ammo.
This was just a test shot to make sure my camera settings were right, but Ava decided to smile anyway.
More tests with my metal sheet. Check my photo stream for 2 others.
Strobist: 3 light set-up. SB25 with a red gel up high zoomed to 28mm, 1/8th power, SB25 with blue gel low, camera right zoomed to 35mm 1/4 power, SB800 zoomed to 105mm 1/32 power pointing straight into my face.
The difference between these two shots is the focussing of the lens. I am standing in front of the red gelled strobe.
Please let me know what you think.
BMW 520 Diesel. Used as testcar by the Dutch Police because the leasecontracts became to an end. Pic made in 2011.
Testing flexibility of clay as part of my strength tests on the new Studio by Sculpey brand clay. The pictured clay is actually Premo! brand, which I rolled out to the third thickest setting on my pasta machine, then baked.
See my blog for the full write-up of these Studio by Sculpey strength tests:
blog.craftygoat.com/2008/03/studio_by_sculpey_strength_te...