Andy Uyboco Jan 18, 2012
Better known as Reddit Photoclass
We saw in lesson 5 that we have three tools to control exposure: shutter speed, aperture and ISO. Of these, the easier to understand and most intuitive certainly is shutter speed, which we will talk about in this lesson.
This parameter simply refers to the amount of time during which the shutter is open and the sensor/film exposed. It is usually expressed in fractions of a second, since it will be relatively rare to need durations longer than one second. Obviously, the longer the speed, the more light can be recorded, and thus the higher the exposure. Like everything exposure related, we also talk about stops for shutter speed, which is a relative measurement unit: 1 stop of overexposure corresponds to doubling the amount of light received, so doubling the shutter speed. Of course, 1 stop of underexposure is the opposite, halving the shutter speed.
At first look, it would appear that it would be simple enough to just let the shutter open as long as you need to obtain a correct exposure, without any other consideration. However, this leads to a problem: what happens when either the subject or the camera moves during the while the shutter is open? We are of course all too familiar with the answer: motion blur. Conversely, using high shutter speeds will result in “freezing” the action, recording the exact split second where you pressed the shutter.
The game, then, is to find a shutter speed which is slow enough that you get enough light, but high enough that you don’t get motion blur. In order to achieve this, it is important to find the “handheld” limit, below which your images will be blurred. It depends on many factors:
The rule of thumb usually given is that the handheld limit is 1/focal length (in 35mm equivalent). So if you are shooting a full frame camera at 50mm, your images should be sharp at 1/50 and above, as long as the subject is static. On a DX DSLR, the same focal would require 1/75 or so (to account for the crop factor). However, this depends on so many factors that you may well find that your own limit is significantly faster or slower.
Once you have found what your handheld limit for a particular focal is, all you have to do is make sure you always use faster speeds. Whenever it isn’t possible, usually because there isn’t enough light, you will have to use a tripod.
In some cases, however, you will want to use slow shutter speeds. This usually happens in cases where you want to communicate that your subject is moving. The most common case is panning: instead of having a static environment with a blurred subject, you will try to follow the exact movements of your subject so that it is the only sharp thing. It is extremely effective when done well, but takes a lot of practice and trial and error to achieve. This is used often in automobile sports and bird photography. Here is an example from Rio 2016:
Another popular effect consists in using very slow speeds on moving water, which will result in a dreamy, surreal look. You will need a tripod and probably a neutral density filter to reduce the amount of light entering the lens. A not too extreme example would be this one:
Another more creative example is this image of NYC’s Grand Central Station:
The goal of this assignment is to determine your handheld limit. It will be quite simple: choose a well lit, static subject and put your camera in speed priority mode (if you don’t have one, you might need to play with exposure compensation and do some trial and error with the different modes to find how to access the different speeds). Put your camera at the wider end and take 3 photos at 1/focal equivalent, underexposed by 2 stops. Concretely, if you are shooting at 8mm on a camera with a crop factor of 2.5, you will be shooting at 1/20 – 2 stops, or 1/80 (it’s no big deal if you don’t have that exact speed, just pick the closest one). Now keep adding one stop of exposure and take three photos each time. It is important to not use the burst mode but pause between each shot. You are done when you reach a shutter speed of 1 second. Repeat the entire process for your longest focal length.
Now download the images on your computer and look at them in 100% magnification. The first ones should be perfectly sharp and the last ones terribly blurred. Find the speed at which you go from most of the images sharp to most of the images blurred, and take note of how many stops over or under 1/focal equivalent this is: that’s your handheld limit.
Bonus assignment: find a moving subject with a relatively predictable direction and a busy background (the easiest would be a car or a bike in the street) and try to get good panning shots. Remember that you need quite slow speeds for this to work, 1/2s is usually a good starting point.
Previous Lesson: The Histogram
Hi Andy, I believe you are a right. Probably just a typo!
Loving the internal stabilization (IBIS) of my Olympus Em5 mark ii. I used a 15mm lens (30mm equivalent, since I’m on a small mirrorless sensor with a 2x crop factor). Two of my three 1 sec shots ( (5 stops slower!) were sharp. Even one of my 4 second shots was sharp! Great exercise.
thank you very much for this informative course.
Could somebody here explain to me again the assignment in a simple way. It not clear to me.
Halo para pecinta bet bola, Selamat datang di Agen Userbola.
Userbola merupakan salah satu agen makelar penyedia taruhan bola on the internet
yang berstandar internasional. Userbola juga bisa dibilang sebagai agen bandar bola ternama di Indonesia, karena userbola selalu memprioritaskan member oleh
memberikan kenyamanan dan kesentosaan bermain. Tidak ada
yang ragu lagi dengan games yang disediakan dan keahlian kami dalam mengurus atau melayani semua kesulitan afin de membernya.
Keunggulan bermain di situs Agen Userbola:
Kalian dapat memainkan berbagai variasi permainan dari produk berkelas dunia:
Sportsbook: Sbobet | Maxbet | Maha168 Sports
Judi Casino: 338 Online casino Sbobet | Maxbet Online casino | Maha168 Casino
Slot Online: Slot Online Bola tangkas | Slot Online Casino | Slot Online Joker123
Togel: Klik4d | Isin4d | Maha168 Togel
Poker: Maha168 Poker
Bola Casino online: Tangkasnet | 88tangkas | Tangkas1
Fish Hunter: Joker123
Kami menyediakan pelayanan terbaik, dilayani oleh customer service 24 jam tanpa offline.
Dilengkapi oleh fitur livechat dan messenger seperti line, whatsapp, serta
Visi dan misi kami adalah memprioritaskan kenyamanan dan keamanan member.
Data pribadi akan dienksripsi dengan keamanan ketat yang susah untuk dicuri oleh orang yang tidak bertanggung jawab.
Berapapun kemenangan yang dimenangkan member akan tetap dibayar tanpa batas maksimal.
Userbola tidak akan menarik sepeserpun yang menjadi hak member.
Dapat menikminati promotional dan hadiah jackpot memikat
dari agen Userbola
Teknik Daftar dan Deposit pada Agen Userbola
Anda menghasilkan mendaftarkan diri dengan memilih tombol member panel yang ada diatas.
Kemudian silahkan isi data pribadi anda oleh lengkap, setelah anda masuk ke taruhan online tersebut dan mengclaim permainan yang ingin anda mainkan. Kita dapat melakukan stor credit dengan cara
masuk ke formulir deposit untuk menengok rekening aktif kami.
Buat request proses transaksi laju anda dapat mengikuti 3
langkah berikut ini:
Publish Formulir Deposit
Requet by way of SMS Centre kami di +62-821-6182-5555
Request via Line kami dengan contact IDENTIFICATION userbola (Khusus DP/WD/TR Cepat)
Request Melalui Live Talk Userbola secara langsung
Harap menggunakan langkah tersebut diatas guna menghindari oknum bukan bertanggung jawab yang
mengatasnamakan Userbola. Berhati-hatilah untuk menjauhkan hal yang
tidak kamu inginkan bersama. Selamat berhimpun dalam komunitas Agen Judi Bola Terpercaya Indonesia.
Userbola ada untuk anda yg serius ingin bermain dengan kami.
Welcome to the Userbola online sports gambling agent site.
You can feel all the conveniences of playing online wagering here.
You will definitely have a pleasurable experience when you are enjoying a
favorite game. Since a reliable bettor, always be careful in choosing the guess that
you do. Likewise, in choosing which agency sites are eligible to be chosen as your best partner.
The bad encounters experienced by Userbola members always informed me
that they at first felt cheated by non-professional gambling agents.
Players are often promised abundant bonus deals when betting online soccer gambling,
but not in real evidence. Userbola as a trusted online soccer agent answers
all doubts about the bitter experience. We all provide absolute proof
by serving professionally which you will feel when you become a member of a gambling agent.
Starting from the deposit transaction, drawback of winning funds, and complaints around the
basketball user ID and on line casino. Bandar Judi Casino Customer
Support staff serves 24 hrs online. There will never
be a day off to help loyal Userbola members in international online
One of the most Trusted Soccer Gambling Real estate agent in Indonesia Serving
Provides of Gambling and Casino Gambling
Userbola is typically the Most Trusted and Recognized SBOBET Agent in Indonesia.
We serve bets of which provide soccer gambling online games, online gambling games,
casino gambling agents, poker plus online lottery.
We will certainly wholeheartedly always be all set to help what you may want and help you if there are
difficulties in making SBOBET Online Betting Company accounts, MAXBET Agents or earlier called IBCBET, Serba4d or KLIK4D lottery.
Fresh twenty percent Member Bonus with typically the Best and a lot Dependable Football Gambling Agent
Userbola is the Best SBOBET Agency and the Biggest
Football Bandar in Philippines, always providing
24-hour online service with the need to stop in the process of registering, adding, withdrawing and responding to your every complaint.
With regard to more information, please go directly to livechat in addition to chat directly with our own friendly
Register for Sbobet at this time!
Total Choice for Trustworthy Soccer Wagering and Casino
Regarding you fans of wagering soccer matches both foreign and domestic, reliable
sports gambling provides various complements from worldwide.
Not really only that, basketball, tennis and eSports tournaments
are also right here.
Especially for connoisseurs associated with Casino Brokers,
we have the most complete range regarding video
games starting from Baccarat, Online poker, Keno, Slot Machine
and numerous more.
Userbola is one of the trusted football wagering sites that acts as a real
estate agent of the planet’s major soccer betting shops
for example SBOBET, Ibcbet plus Mahabet Sport.
You may definitely get a enjoyable experience while betting due
to interesting features made available from this website.
Userbola has a professional service when you make a deposit transaction until pulling out cash.
Before you can enter the soccer gambling game on Userbola you must register very first
and become a consumer. The strategy is very simple, all you have to be able to do is click upon the list and enter the registration form webpage and you
will proceed directly to our main website.
It’s hard to come by educated people about this topic, but you seem like you
know what you’re talking about! Thanks
Betting games that are very attached with the hearts of Indonesian people are known as
s1288 cockfight gambling. Looking at Indonesia’s historical record, cockfighting games
have existed also since the days associated with the kingdom.
This activity will be not only entertainment but is usually also part of a
culture passed down through generations of Indonesian ancestors.
Regrettably, although this activity will be a cultural
heritage regarding thousands of years, the
particular Indonesian government does not necessarily discriminate in enforcing the particular law until finally it is quite difficult to look for
a place to play cockfighting in Indonesia.
Fortunately technology invented the particular internet because in the particular modern era like anyone can again access exciting games through an internet relationship.
Enough with the capital regarding electronic devices for
example notebooks, computers or smartphones linked
to the internet, a person can immediately enjoy typically the excitement
There are indeed many gambling online sites that provide similar gives on the internet, nevertheless however
only a few of these kinds of sites can be reliable.
Only a handful of sites can provide professional services that are worthy regarding being obtained by consumers as provided by the city of S1288 Sabung Chicken breast.
S1288 or better referred to as S128 has been current for many
years serving every lover of online game cockfight gambling throughout Asia, actually the world.
Hundreds of people are connected weekly in order to enjoy
every match that may be presented and you will watch the match directly through the available live streaming.
Right now there are many interesting functions that are owned by simply s1288 as the best chicken gambling
bookie in Asia. Listed below are interesting functions that you should know:
The first advantage you may get from playing cockfighting is the availability of live buffering chicken battles that are served in HD or even high
definition quality. I think very clear to ensure that you won’t miss a individual bit of excitement by choosing S1288 as your on the internet gambling partner.
Various competitions are available
There are numerous tournaments that you take
part in at all times so simply no need to be scared you will not get a game because with s1288
poultry matches will almost always be present each day
and you will benefit from the variety of games you would like.
Attractive Bonuses and Promotions
Customer comfort is a new top priority for all of us.
Therefore, this site has provided many interesting bonuses and promos that
you may follow as an established member. These bonuses plus promos are given because thanks from s1288 to be able
to customers for choosing them as partners to play online gambling.
How to Play Chicken Gambling upon S1288
All you need to do first before starting the game is to register
yourself as a member on the particular Betberry site.
It’s easy, visit the official Betberry website and enter the registration menu.
Complete the enrollment process and you may immediately get a
user ID in addition to password that you will later use to sign into the
Heya i’m for tһe firѕt time here. I found
this board and I in finding Ӏt tгuly սseful & it
helped mе out mᥙch. I hope to give sometһing agɑin and heⅼp others such as ｙߋu helped
Stoop by my weeb site: judi kartu poker
You said: “1 stop of overexposure corresponds to doubling the amount of light received, so doubling the shutter speed. Of course, 1 stop of underexposure is the opposite, halving the shutter speed.”
If you double the shutter speed, wouldn’t that halve the light received instead of doubling it, and vice-versa?