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Combined photos of a white reflector before and after sensor cleaning.
I found this Adorama video helpful: youtu.be/qbJaR0xE1YY
Nikon D200
AF-S DX Nikkor 35mm f/1.8 G
ISO 100 f/22 6sec
Images combined with Photoscape
Here we have one of the most famous deep sky targets in the night sky - The horse head nebula.
Located immediately next to it is the flame nebula. The spot of light above that is the bright star that is Alnitak - the far left star that makes up the belt within the Orion constellation.
The most impressive part about this image is that it comprises of only 5 exposures totally 15 minutes of exposure time. This is *incredibly* short for deep sky imaging, but it possible due to the setup I was using.
I captured this photo with a Canon 400mm F/2.8 IS III - the very fast focal ratio of this telescope allows me to capture lots of light in a short amount of time. The camera was very sensitive too - an IMX533 colour sensor with is much more sensitive than your average DSLR or mirrorless camera.
Capture details:
- 5x180s
- ZWO 533MC
- Skywatcher EQ6R Pro
- ZWO 715MC + 32mm guide scope
- Canon 400mm F/2.8 IS III (wide open at F/2.8)
- Astronomik 2" UVIR
- ZWO 2" EF filter drawer
- NINA + PHD2
- APP for stacking
- Siril
- PS CC + RC Astro plugins
Lockdown boredom inspires experimentation.
Made by reflecting and refracting light from a small torch on to the sensor with no lens attached.
For the person who can't have too much electronic gear.
Part of an ongoing series on Boxes ... making useful or decorative containers out of LEGO.
What was the hardest part of this capture?
It was not the exposure. With a solid cloud cover, I was able to lock in a manual exposure for perfect results on every shot. In this case, I chose a 1/1000 shutter speed (the bird was moving a lot and quickly), an f/5.6 aperture (to isolate the bird using shallow depth of field) and ISO 160 to bring the brightest whites up to near RGB 255,255,255.
The challenge was not the tight framing of the bird. I was able to slowly belly-crawl close to the small flock of terns. So close that I only needed a 234mm focal length in front of the 7D II's APS-C sensor. I should have used a slightly wider angle still as I added a small amount of canvas on the left in post, providing additional breathing room for the wing.
The challenge was also not the low shooting position. Using the NatureScapes Skimmer Ground Pod II (www.the-digital-picture.com/Reviews/NatureScapes-Skimmer-...), I was able to push the camera forward as I crawled in the sand. Shooting from on the ground gave me a clean background (only sky) and the remaining land in the frame is primarily a blur of texture.
The big challenge? Timing the shutter release in conjunction with using the proper AF tactics to get this specific composition with the head included in focus. The sandwich tern cleaning process involved a wide array of moves, few of which I was able to predict and all of them fast. The head was constantly moving in what seemed like all directions and fast framing adjustment with a properly-selected AF point proved very challenging. A narrower aperture would have reduced the AF task, but the result would have been more ground in focus for a different look.
One aspect of this image that I like is the complete separation of the head from the body. Many of the preening positions did not have this attribute (and many had a completely hidden head). I also like the balance. While I don't often place my subject in the center of the frame, I felt that centered worked best in this case. The wing and tail balance the bird over the dark, eye-catching legs. The head extended to the right caused me to want the legs shifted just left of center to get what I felt was the right overall balance. My shooting position was low enough that only the legs intersected the color of the sand. The small amount of feather pulling through the bill is the bonus feature. I'll credit the 7D II's short shutter lag for enabling that timing.
This sandwich tern was on the gulf shores of Captiva Island, just north of Blind Pass. This location in southwest Florida is ideal for expanding one's bird photography portfolio.
Gear Used:
Canon EOS 7D Mark II
Canon EF 100-400mm f/4.5-5.6L IS II USM Lens
NatureScapes Skimmer Ground Pod II
Camera and Lens Settings:
234mm f/5.6 1/1000s, ISO 160, 5622 x 3648px
Click on the image to view large. Get more camera gear and photo information at www.the-digital-picture.com/
#Canon #CanonPhotographers #Canon7DMarkII #Telephoto #Bokeh #Sand #SandwichTern #Nature #NaturePhotography #Wildlife #WildlifePhoto #WildlifePhotography #Bird #Birds #BirdPhotography #BirdPhoto #BirdsUnlimited #SeaBirds #Shorebirds #Birding #BirdWatching #USA #UnitedStates #Florida #Captiva #SanibelIsland #BlindPass #Photo #Photography
Straight out of the camera. Handheld pan with 3.2 second exposure and a couple of ND graduated filters on the lens.
I went to B&H yesterday to pick up a monopod for work and a few filters for myself. As will not surprise those who know me, I couldn't resist playing with the new toys when I was there, which in this case meant the new Canon 5D. For those who don't follow camera news, the 5D is revolutionary because it offers a full 35mm sensor in a body that, unlike the Canon 1ds MarkII, both costs and weighs less than a minivan. In other words, it has no field-of-view crop on your lenses.
"But Ryan," you say, "you shoot Nikon!" Well, yes (though more accurately I shoot F-mount, since I also pack a Fuji S2), but the excess tribalism of the photography camps depresses me. This isn't Mac vs. PC -- while digital photography has a strong element of geekiness, geekiness isn't the point. Creating an aesthetic is, and to that end we are all limited far more by our imaginations than the tools we use. It's no coincidence that those who are truly, rabidly devoted to one, those who say "The D2X is crap!" or "I don't see why anyone would want full-frame!" are almost always deeply mediocre photographers. If I had the money, I'd shoot Nikon AND Canon (and Hasselblad, and large format…) A good camera is a good camera, and for certain markets, it appears the 5D is a great camera.
But only certain markets. From what I see around the Net, a lot more people think they need this camera more than they actually do. If you've been shooting Canon film cameras for many years and have a lot of money, this is a dream camera for you. If you're a top-level pro shooting with a 1ds and need a lighter backup, this is your lucky day. But this a pro-level imager, and even though it *sounds* like that's something everyone should want, it's not. First of all, if you don't have a collection of fantastic lenses and don't want to buy them, don't even consider this camera. Its 13 megapixels will point out every flaw in your lens, and its 35mm format will have severe quality loss at the edges and corners unless the light is coming through the best glass. And I don't just mean L lenses: I'm not going to name any names, but there are a few L lenses that perform quite poorly with this camera, at least among the zooms. A 16-35, 24-70, and 70-200 IS would be a fantastic set-up, but the total cost of that kit is more than $7,500. That's for people who need this to go out and make money; if you have that much to take pictures of your kids, I want your job.
Primes fare much better; in fact, I took these pictures with the dirt-cheap 50mm f/1.8, which is plenty sharp enough for it, even if it did re-introduce me to the world of hideous bokeh. This set-up was amazingly light for such an imager, which again reinforces the idea that those this camera best serves are pros who want a lighter full-frame camera or want to move from film.
Some points:
•The image resolution is phenomenal. Even viewing images 1:1 on a monitor, they look great, which is like looking at film through a 40x loupe and seeing razor-sharp results. This is a great camera for high-level stock photography -- you could blow these pictures up VERY large and have them still look good.
•You definitely get best results on this camera from RAW mode. The highlight recovery is impressive, vastly increasing the camera's dynamic range. Frankly, most of the JPEG modes look a bit weird, which many some owners have aready noted. This adds another cost -- lots of memory. Shooting RAW JPEG gave me 18 shots on a 512MB card.
•The ergonomics are similar to the 20D, although it's slightly more comfortable to hold. I personally greatly prefer Nikon ergonomics, but 10D and 20D shooters who have been holding out for a model like this should be happy.
•The LCD is great, but even in B&H it looked dim. I can see how people are having trouble with it in the sun.
• In the end, it was a nice feeling to have a 50mm act like a 50mm. And that is quite a viewfinder.
Would I buy one of these? I'd be seriously tempted as someone who wants to shoot weddings, given its high ISO qualities. But for what I need I think the 1DMarkII would be a far more versatile camera, and for most types of shooting 12MP really is overkill. There's a reason people still shoot landscapes in large and medium formats but you rarely see someone pull out an 4x5 camera at a rock concert. For reasons not worth enumerating, a 35mm-sized sensor is only a marginal improvement to me, but there are many, many shooters for whom it is not. Have fun.
Cinzia Scaffidi, Vice President of Slow Food Italy, indicates biodiversity as a value capable of becoming art, which Koen Vanmechelen – conceptual artist who in his works has always being dealing with the themes of diversity and bio- and cultural identity – has developed in the Life Bank Project.
In the setting that once hosted the Bank of Venice, in Palazzo Franchetti, today the seat of the Istituto Veneto di Scienze, Lettere e Arti, the artist Koen Vanmechelen positioned, as opening gate of an evocative gothic garden, two big black bronze hands, one male and one female, symbolic guardians of two extremely delicate sculptures made of Murano glass, representing a little chick and a heap of scattered seeds. Between the antique wooden furniture, a new bank has taken on a life of its own, substituting currency with the real patrimony of our civilization: the seed!
Over 500 seeds establishing the “Bank of Life” – ancient seeds that have been lost, forgotten, collected and conserved by “resilient” farmers and specialized research centers – have been selected for the project to represent the genetic heritage of our culture and our millenary history.
The selection was curated by Piergiorgio Defilippi, founder of the bio-social Farm “Il Rosmarino”, Marcon (Venice), starting from a cereal that is the symbol of the evolution of our civilization: the Einkorn Wheat, whose history dates back to the Neolithic and traces the transition from the nomadic hunting to the stancial and rural settlement. The seeds catalogue followed the development of the typically mediterranean diet, with the choice of varieties, even for the most common ones, that have not been artificially hybridized but which represent the natural path of evolution. For this precise reason, with respect of the spirit of Slow Food “Terra Madre”, the locating of the seeds has been exclusively conducted through the direct contact with farmers, associations of safeguard and research centres spread all over the world.
The interaction with the public and the multi-sensoriality express themselves through a symbolic seeding which tracks back to the thought of the Japanese botanist and philosopher Masanobu Fukuoka (1913-2008) pioneer of the natural or “Do Nothing” agriculture and author of the now legendary essay “The One-Straw Revolution”.
This detects motion in the front yard and there is one in the backyard. The receiver's eyes light up and a selected chime goes off. Each sensor can have its own chime. So cool.
Crappy picture is crappy.
What's left to do-
-Greebles
-Bottom sensor array
-Putting in struts for stand in the bottom
-Decide on hanger or turrets for the middle bit
-Figure out the final engine arrangement/decide on greebles around engine
-Order pieces to do above steps.
Will hopefully be done in the next few weeks.
CCG
November Zion National Park Autumn Subway Hike! Sony A7rii & Sony 16-35mm Vario-Tessar T FE F4 ZA OSS E-Mount Lens! Dr. Elliot McGucken Fine Art Photography
An important thing to remember is that even though pixel sizes keep getting smaller and smaller, the technology is advancing, so the smaller pixels are more efficient at collecting light. For instance, the Sony A7rII is back-illuminated which allows more photons to hit the sensor. Semiconductor technology is always advancing, so the brilliant engineers are always improving the signal/noise ratio. Far higher pixel counts, as well as better dynamic ranger, are thus not only possible, but the future!
Yes I have a Ph.D. in physics! I worked on phototranistors and photodiodes as well as an artificial retina for the blind. :)
You can read more about my own physics theory (dx4/dt=ic) here: herosodysseyphysics.wordpress.com/
And follow me on instagram! @45surf
Facebook!
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Dr. Elliot McGucken Fine Art Photography!
I love shooting fine art landscapes and fine art nature photography! :) I live for it!
45surf fine art!
Feel free to ask me any questions! Always love sharing tech talk and insights! :)
And all the best on Your Epic Hero's Odyssey!
The new Lightroom rocks!
Beautiful magnificent clouds!
View your artistic mission into photography as an epic odyssey of heroic poetry! Take it from Homer in Homer's Odyssey: "Tell me, O muse, of that ingenious hero who travelled far and wide after he had sacked the famous town of Troy. Many cities did he visit, and many were the nations with whose manners and customs he was acquainted; moreover he suffered much by sea while trying to save his own life and bring his men safely home; but do what he might he could not save his men, for they perished through their own sheer folly in eating the cattle of the Sun-god Hyperion; so the god prevented them from ever reaching home. Tell me, too, about all these things, O daughter of Jove, from whatsoever source you may know them. " --Samuel Butler Translation of Homer's Odyssey
All the best on your Epic Hero's Odyssey from Johnny Ranger McCoy!
Testing out an infrared sensor I picked off of the auction site, works pretty good. I put a 3.5 mm plug on it and hooked it to the camera axe. Model number is E18-D50NK.
Selasphorus rufus
DC's own Sensor Ghost playing in Lost Origins Gallery in Washington, DC's Mount Pleasant neighborhood.
(Unknown species), Family: Gerridae
The Gerridae are a family of insects in the order Hemiptera, commonly known as water striders, water bugs, pond skaters, water skippers, or jesus bugs.
Water striders are anatomically built to transfer their weight to be able to run on top of the water's surface. As a result, one could likely find water striders present in any pond, river, or lake. Scientists have identified over 1,700 species of gerrids, 10% of them being marine.
Water striders are able to walk on top of water due to a combination of several factors. Water striders use the high surface tension of water and long, hydrophobic legs to help them stay above water.
Water striders are aquatic predators and feed on invertebrates, mainly spiders and insects, that fall onto the water surface. Water striders are attracted to this food source by ripples produced by the struggling prey. The water strider uses its front legs as sensors for the vibrations produced by the ripples in the water. The water strider punctures the prey item's body with its proboscis, injects salivary enzymes that break down the prey's internal structures, and then sucks out the resulting fluid.
Black Pureview - Collection of large sensor/MP Phone Cameras - the 41MP Nokia 808 Pureview, the 41MP Nokia Lumia 1020, the 20MP (1" sensor) Panasonic Lumix CM1
Shot some macro photos with the Nikon 55mm f3.5 Macro lens in our backyard.
Our backyard
Knoxville, Tennessee
Monday, June 12th, 2023
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The first thing to say is that each electronic sensor has a protective filter over it, so we are not actually touching the electronics. That would be a disaster. Most people send the camera off for a service and a clean and that's a very good idea. After all this is an expensive investment and we want to make sure our camera works as well as possible for as long as it can.
But, it is quite easy to clean your sensor at home. All you need is a kit (like the one I've shown). This includes sealed sterile swabs and a little cleaning fluid (they are essential - do not try to clean your sensor with a cloth where you can scratch the dust into the sensor filter). There are also many videos on YouTube showing you how to use these dust cleaning swabs, but provided you get the right size for your camera (mine is full frame) a simple swipe will suffice.
For a DSLR you obviously need to lock your mirror up before the clean, and then lower it immediately afterwards. Then with the other side of the swab give your mirror a quick wipe as well. Do not apply too much pressure. After all, these are only tiny dust particles - you should not have any dirt.
My Leica D-Lux 7 which I used to take these pictures has a fixed lens, so it will never need its micro-four-thirds sensor cleaned.
Introduction to CMOS Image Sensors
evidentscientific.com/en/microscope-resource/knowledge-hu...