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Le test Nikon Z 5 complet avec mon avis, des exemples de photos, avantages et inconvénients de cet hybride plein format, à qui il s'adresse
Test av ti redningsflåter sammen med "Seilas" og "Båtliv". Det ble testet to redningsflåter fra hver av merkene Eurovinil, Viking, Zodiac, Plastimo og Arimar.
Nikon D600 + Samyang 8mm en mode FX
Test du capteur donc accesible en full size (Pas de grosses retouches, Dérawtisé avec LR 4.2)
© Landry NOBLET
Light test for a recent shoot. All textures in-camera. Black and white conversion in ACR.
5' Octa camera right and slightly behind model feathered forward.
More tests of diffusion materials. Following some discussion with Dalantech , I've also included the red channel histogram which in the first test seemed to be suppressed slightly by paper diffusers but in this test the profiles look similar
Testing RX1R - the quality from the original RX1 is already fantastic but the detail you can see from the RX1R is both punishable but amazing, even when shot wide open!
As much as I'd love to own a Leica Q, I've put the money instead towards the two RX1 and one RX1R bodies currently in the stable and treat each one as disposable then.
Also testing a Magmod magsphere copy ... as said, it doesn't soften the light but spreads it out. Might still need to look around for a small outdoor diffuser which effectively softens the light. Umbrellas are great but I've lost quite a few equipment from being blown over in the wind >_<
Healey Mills to marsden MGR wagons, nice day for December, with dry rail / good conditions.
Loco ran round at Marsden, train returned to Healey Mills, success.....
Come 1981, when the Woodhead Route closed, these MGR's were a regular sight through Huddersfield, heading for the Fiddlers Ferry power station, at Warrington.
Often overloaded, and on a wet rail, chaos usually reigned for many an hour, as they failed to make the uphill struggle to Marsden. Stranded passengers everywhere, while their trains were diverted up the "Lanky" and just a few local stoppers to Leeds with no taxis / buses, or backup plan, it was awful, and it happened regularly.
A class 37 was on standby in platform 7, when this photo was taken, and 56 006 had a brake van marshalled, at each end of the wagons.
Looking at this now, it seems as if BR had the woodhead route stitched up already, even though it did last until 1981.
Testing different lenses for zoom and ease of use.
this one is fuzzy to focus.
The SEL55210 is easier, autofocus and more f stops
See the EXIF on each image.
Tuesday I bought a new set of markers. I'm testing them today along with a few other pencils and pens that I bought.
Faber-Castell PITT Artist brush pens on Canson Mix Media paper.
Currently use a Moleskine for my daily journaling and I love it... when writing and doing pen work anyway. I don't like how the paper performs with water though. Sooooo, I've been thinking of making my own journals and have been test papers. I want the thinnest paper possible that will perform well with watercolor... Think I've found a winner!
Catalog #: 10_0016100
Title: Bomb Test
Date: 1920-1929
Additional Information: Aerial Bombing tests on Ostfriesland by Billy Mitchell
Tags: Bomb Test, Aerial Bombing tests on Ostfriesland by Billy Mitchell, 1920-1929
Repository: San Diego Air and Space Museum Archive
Nikon CFI Plan 10x/0.25NA 10.5mm WD objective mounted on Canon EF 100mm f/2.8L Macro IS USM + Canon 5 D Mark II. This combination yields 5:1 on the sensor, i.e. 1 mm on reality projects to 5 mm on sensor.
I used continuous lighting with two 32 W full spectrum daylight lamps (CRI 97).
Left:
focus step size 0.01 mm
stack size 50
MLU ON
EFSC ON (silent mode = 1)
wait after stepper movement = 1s
IS (image stabilizer) ON
Right:
same as left but
IS OFF
There is really no difference between the pictures. So whether IS is On or OFF makes no difference in my setup.
Technically using Image Stabilizer together with camera mounted on tripod is quite complicated. Canon's own doc. pages have this info:
Using IS with a tripod
When using certain early models of IS lenses with a tripod it was necessary to turn off the IS function. This is because of a phenomenon known as ‘Shake Return’. Shake Return occurs when the IS system tries to correct vibrations to which the system itself contributes. When the IS lens sits on a tripod, the IS detection gyros pick up any tiny vibrations or movement; these might be caused by the tripod being knocked, or the photographer adjusting a camera setting.
The IS system then swings into action to correct that movement. The movement of the IS lens group causes its own minute vibration, which is in turn detected by the movement sensor, which triggers another correction. This ‘feedback loop’ can continue endlessly, resulting in the addition of unwanted blur to images that would be sharper if the IS function was switched off.
Canon addressed the ‘feedback loop’ in later model IS lenses by introducing an algorithm to the IS detection system to automatically recognise when the lens is mounted to a tripod. When these lenses are mounted on a tripod and the shutter button is pressed halfway, the IS system kicks in and the image in the viewfinder can be seen to go through a very slow vertical shift for about one second.
If the shutter button remains depressed halfway the IS system detects the lack of motion and automatically switches into a special mode. In this mode IS detects and corrects for mirror slap and shutter movement at slow speeds, but not for ‘normal’ lens shake. There is no advantage to be gained in turning off the IS function or locking the mirror prior to exposure.
The early model lenses which do not have this automatic function and which should have IS turned off (ie lock the IS correction lens group in place) when mounted on a tripod include the following lenses:
•EF28-135mm f/3.5-5.6 IS USM
•EF75-300mm f/4-5.6 IS USM
•EF100-400mm f/4.5-5.6L IS USM
•EF300mm f/4L IS USM
Even though IS ON/OFF did not make a difference in my test I think it is better to have IS turned OFF when stacking with microscope objectives.