Friday 27 November 2020

How to set up a point-by-point reflex camera

Let's go through the menu by menu, point by point of your camera to learn more about what we talked about in " Basic Tips for Beginning Photographers ".

In short, shoot RAW and read the instruction manual (which I don't usually do either) to learn how to operate your camera with your eyes closed and make the most of all those functions that we pay for and many do not get to use or understand.

Let's take a look at the first menu of an entry-level SLR camera like the Canon 600D. The menus are very similar between some ranges and others, so you will surely find these options in yours. I'll go point by point, stopping at the most important ones and configuring them with the recommended options.

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We can choose the quality of our file

JPG (gives us the option to select the megapixels that will be used in each shot) or RAW, my recommended option. On some cameras it allows you to select lossless or compressed RAW, but since I want the highest quality and flexibility possible, I always choose losslessly.

jpg-o-raw

Choose between JPG or RAW

Pros of shooting RAW

The RAW captures much more information than the JPG that we can later recover in the development.

No compressions.

No loss of quality.

A flexible file will be created when editing the photograph, for example, you can play with the shadows and lights as long as you have exposed the scene well.



Greater control over your final image

You will be able to solve errors after shooting, in digital development. I do not recommend having this philosophy, as usual, you run the risk of not preparing the details and adjustments of your photography well because you know that later you can fix it and it will not always be like that. You can't imagine the time and satisfaction you gain by coming home with homework well done.

"Disadvantages" in quotes

Your camera's processor will suffer in burst mode, as a RAW file is heavier and will not be able to shoot at the same speed as a JPG. For example, if your JPG camera shoots 6 photos per second in RAW it will shoot 3.

You will need more space on your memory card

You will have to develop your photograph later in programs like Lightroom, since the image will come out flat in terms of colors, contrasts, sharpness, etc.

As you can see, the cons from my point of view are quite ridiculous. If you use burst mode a lot because you dedicate yourself to action or wildlife photography, you will surely end up buying a Canon 7d type camera with bursts of up to 10 frames per second, which with the release of its older sister, the Canon 7D Mark II, now has an interesting price.

Over time you will have several large-capacity memory cards and finally, you will also like to edit your photos to get a faithful capture or a more creative development.

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Sound warning


It will allow you to activate or deactivate the beep that indicates that the camera has focused on the point you have selected. Personally, I like to take it deactivated, I go more unnoticed while practicing street photography, in nature, I am less noisy and more relaxed, I don't get along very well with beeps

Tip: When focusing automatically, notice how the focus points you see through the viewfinder light up red to warn you that your selection is already in focus. If you get used to focusing through the focus points, you can dispense with the audible warning, to later rely on your eye and use manual focus. In which cases it will always be more reliable than autofocus, such as focusing on poorly lit areas where autofocus tends to go haywire.

Shoot without card

I urgently recommend that you disable this option. Its function is to notify you when you shoot and you do not have a memory card inserted. If you don't turn it off, it will allow you to shoot until you realize that the most important thing is missing.

I remember at the beginning of project 365, one day I went out to photograph about 60km from home, very excited. I didn't have much time, so as soon as I arrived I quickly chose the angle, secured the tripod, and mounted the lens I was going to use. When I pressed the shutter button for the first time, I verified thanks to this option that I had left the card inserted in the computer the day before. You can imagine my face at that moment, but it would have been worse to be cold, to get even more excited about the result, and then not take anything home.

The only solution was to have a coffee watching the sunset that I went to photograph with a good croissant, the food in these cases lifts my spirits. Since that day I carry an emergency memory card in my wallet and the rest in my backpack.

Image review

The amount of time the photo will be displayed on your LCD screen right after it is taken. You can deactivate it, choose the seconds or hold it on the screen until you press a button.

Peripheral illumination correction

Corrects vignetted or darkened edges. There are lenses of not very good quality that is very open diaphragms can vignetting, activating this option will reduce this vignetting. These types of problems can be solved manually by closing the diaphragm more to points like f8 or f11, where most lenses give their maximum performance ( sweet spot ). I always have it deactivated, but if you have noticed this problem in your images it is better to activate it.

Red-eye reduction


This option will fire a flash or several short flashes before taking the picture, in order to close the pupils and avoid red eyes, a problem that occurs in poorly lit places.

Tip: If you want to solve it without resorting to this option, tell the person to be photographed to look at an intense light source first.

Flash control

We can activate and deactivate the flash, choose the type of E-TTL metering (measure ambient light to configure the correct flash power together with your selected settings), adjust the built-in or external flash if it exists.

Setting up a reflex camera

Let's analyze the second menu of a Canon camera I will go point by point so that you can understand all the options and know what you activate or not.

Even if you use Nikon or another brand, the options are the same after all.

canon-menu

Canon camera menu

Comp. Exp./AEB:

This option is very interesting, especially for HDR lovers. If you configure it, the camera will allow you to take 3 shots with different exposures, following the order of exposure, standard, low exposure, and high exposure. That is, in the case of the example, the first shot would be with the center meter exposure 0, the second photo underexposed with -2, and the third with the overexposure of +2.

In this menu you can move the meters at will, they do not always have to be these values. I recommend disabling it if it is not going to be used for creative purposes.

Automatic Brightness:

This parameter automatically corrects photos that are dark or low-contrast. The best thing is that from the beginning you get used to using manual mode and correcting these problems on the spot, it is much more reliable than doing it automatically. Remember to shoot in RAW mode and you will be able to correct the brightness yourself in your development program as we have done in the entries « improve photos with Lightroom «.


Imagine that for whatever reason you wanted a photograph in dim light or very bright and the camera corrects it automatically, what grace it would make me return home and not have the photograph I was looking for.

Measurement mode:

You must know the four modes that are presented to us, they are important options that will make you achieve success in difficult lighting situations.

Evaluative metering: It is the most automatic mode for beginner users, it measures the light in the scene in a general way, so you do not have to worry about measuring in dark or light areas.

Partial measurement: Measure in the center of the image as you can see in the second icon. It is ideal for backlights or areas with strong contrasts.

Spot metering: My favorite, it measures the light exactly at the point where you indicate it. From the value marked by the exposure meter, you will assess whether you need more light or not. My recommendation is the fastest and most effective, do not be afraid of trial and error, it really is how you really learn.

Center-weighted metering: This option measures the light in the center and then averages the rest of the image.

point-measurement

Metering modes in photography

Custom WB:

Allows you to manually adjust the white balance. In a session in which you are not going to move from the site or the lighting is going to change, perform a correct white balance with a gray card or color card and use this option to achieve a reliable color in the rest of the shots.


Personally, I do not usually perform the white balance except on rare occasions that I need the exact colors to reality, this is one of those "problems" that are solved well in the development and without losing quality, as long as you have shot in clear RAW.

Scroll / Sec. WB:

Used to correct the white balance. Upon entering you will see a graph with a box that you can move to the position B = blue, A = amber, M = Magenta, and G = green. Depending on the dominants and your needs, move the square until you get the color you are looking for.

Color space:

This option is a bit complicated and everyone usually has their own vision. After researching on the subject I give you a quick summary of my conclusion:


AdobeRGB, captures more colors than sRGB, the monitors of 95% of those who will see your photos are not capable of reproducing all the colors of AdobeRGB, and if you edit a photograph taken in AdobeRGB on a monitor that is not capable of displaying all the colors when printing there will be colors that will not come out correctly.

My recommendation: use AdobeRGB and before publishing or printing the photo convert to sRGB and edit it with that profile. This way you make sure you have a digital negative with all the possible information in case one day that photograph is worth millions or you buy a good monitor that reproduces all colors. With the sRGB profile, you will upload an image to the network with the colors most similar to those you see on the screen.


If you still prefer to skip the step of converting the image to see, you think that you will never take a super photo or you only use your camera to photograph your vacations, choose it as the color space.

IMPORTANT: Another of the key points of the entire menu.


If you want to have more flexible control over your videos to edit them with total flexibility, my recommendation is that you choose the Neutral mode and configure its parameters as in the image.

This configuration runs all over the internet and is the most used to get an image as flat as possible and thus be able to edit the video to your liking without loss of quality.

Friday 6 November 2020

ALTCOINS: WHAT ARE THEY AND HOW DO THEY WORK?

The article was written By Mickael Mosse – Blockchain and Cryptocurrency Expert

When reading about cryptocurrencies, we often come across the term altcoins. What does that mean? What distinguishes altcoins, of which there are already thousands, and where does their name come from? Check out our short and specific guide.

Mickael Mosse points out thatIn the beginning, there was Bitcoin. And, taking into account the dynamics of the development of the world of cryptocurrencies, a lot, a lot, nothing. The world's first cryptocurrency, based on blockchain technology, for two years, was in fact the only cryptocurrency that has been around since 2009. The word cryptocurrency or digital money asset return was unequivocally associated with btw Bitcoin.

Mickael Mosse Blockchain Advisor


Altcoin, an alternative to BTC


However, when the price of BTC rose sharply and the Satoshi Nakamoto project started to get noisy not only in the niche world of fledgling cryptocurrency, another crypto began to appear. They were an alternative to BTC, hence the name: altcoins.


Mickael Mosse points out thatThe first cryptocurrency after Bitcoin was Namecoin (NMC). However, it did not take the hearts of investors by surprise and today it is at the bottom of the capitalization ranking of five hundred cryptocurrencies. It can be traded on just 10 cryptocurrency exchanges. Later, Litecoin (LTC) was created, which, advertised as an enhanced Bitcoin, is at the forefront of the ranking to this day and with a capitalization of $ 4.3 billion, it was definitely placed in the top ten cryptocurrencies. To date, more than 3 thousand. cryptocurrencies, and more than 2,5 thousand. of them still exist - these are altcoins.

Mickael Mosse Bitcoin advisor

Bitcoin and altcoins

Mickael Mosse Crypto Advisor



According to  Mickael Mosse, The altcoin market, although the vast majority of them is a separate product from BTC, is strongly associated with btw. If the price of the "king of cryptocurrencies" rises, so do the prices of altcoins. When the price of BTC falls, other cryptocurrencies will almost certainly decline as well. It is also clear that altcoin prices react much more aggressively. Both in the case of increases and during the discount, their movements are usually many times greater. In August 2020, some cryptocurrencies were able to add more than 750 percent of value per day!


The vast majority of altcoins, however, are a new solution on the market, and not just an idea to create a new cryptocurrency that offers nothing. Today, altcoins are associated with specific networks and business models, dedicated to specific groups, offering services, products, and solutions to existing problems not only in the world of digital finance.


Altcoins generally don't duplicate btw limitations. They are much better scalable (that is, they allow you to conduct a much greater number of transactions at the same time), so they are cheaper to operate and do not overload networks like BTC.


Of course, cryptocurrencies are still emerging, it is not known for what. There are even special pages with which you can create tokens with your last name or any name. However, the vast majority of the projects are multi-million dollar ideas that have won the approval of many investors. More and more often, raising public funds for the development of such projects takes literally a few minutes, and institutional investors are struggling to buy as many tokens as possible and consequently share in the success of a technology-based project. blockchain. says Mickael Mosse,

The most popular altcoins

According to  Mickael Mosse, The top 4 altcoins in terms of capitalization, behind Bitcoin, include:

Ethereum (ETH) - network with its own blockchain on which smart contracts and other cryptocurrencies are created,

Ripple (XRP) - a cryptocurrency that offers real-time settlements for international transfers. It is used by, among other banks,

Tether (USDT): stable currency, based on the USD exchange rate. It enables an easy and inexpensive transition from the world of traditional currencies to cryptocurrency exchanges.

Link in the chain (LINK): the first cryptocurrency platform that is fully integrated with the international interbank SWIFT system, is supported, for example, with Intel.

article from mickaelmosse.com