A photographer knows that one lens is not worth the other. Newbies, however, may be left undecided about choosing a good Canon lens, especially between the 75-300 and the 55-250 ones. Let’s see what they are used for.

After days of research you still haven’t been able to find the best Canon lens for your needs and are confused by the myriad of models on the market? The original Canon ones are 88 to which are added all those produced by third parties such as Sigma, Tamron and Samyang. There is really plenty of choice, but since these lenses cost so much it is always better to know what you are buying in order to make a good investment. One of the Hamletic doubts of novice photographers often encounter is the choice between 75-300 and 55-250 lenses as the protagonist. What are they for and above all what are the differences?

In reality, these are two quite versatile lenses that can be used to try their hand at different styles of photography, although there are substantial differences between them. Like any tool, even the objectives are divided according to the price range and quality. Our advice is not to overdo it by buying an expensive product and to start with one for beginners that allows you to learn without spending too much.

Canon 75 – 300 Lens

Canon 75 - 300 Lens

As you read in the previous paragraph, 70mm lenses often fall into the category of telephoto lenses. This type is particularly useful for close-up portraits, as it narrows the view and allows you to focus on a single subject. These models are very popular with nature photography lovers and portraitists, although they can also be used in sports photography especially when combined with a USM autofocus motor.

In general, these lenses allow you to photograph subjects even in low light conditions obtaining satisfactory results. Although you can do without this lens if you are not interested in the types of photography mentioned above, the advice of many photographers is to always have one among the ‘tools of the trade’. Canon has a good catalog of 75-300 lenses with varying prices based on materials, lens quality and focus motor.

Canon 55-250 Lens

Canon 55-250 Lens

They are the so-called ‘normal’ and you probably already have one at home. With variable focal length, the 55–250 or 50mm lenses are very versatile as they take advantage of a field of view equivalent to that of our eyes, without any variation. They are recommended for beginners just to begin to understand what kind of photography they want to approach.

They are also great for amateurs who just want to take some pictures of friends and family, or maybe capture the good moments of a vacation. If used by a capable photographer they are also very suitable for portraits, although the photographs taken must then be reworked with an editing program. Like the 75-300 lenses, these also come with different prices, but since they are ‘standard’ lenses they can often be found at a reduced cost.

Now let’s see what determines a good focus of a lens.

Focal length

Focal length of lens

The focal length is nothing more than the distance between the center of the lens and the plane of focus established by the film, by a sensor or recently by a motor. This length can be changed thanks to the function known by all as ‘zoom’, while in other lenses there will be a single focal length, known as ‘fixed lens’.

You can find normal 50mm, 35mm wide angle and 70mm telephoto lenses on the market. Let’s take the case of our 75–300, this lens will have a variable focal length and therefore a zoom that will range from 75mm to 300mm, in theory keeping the subject well framed and above all in focus. Focal length along with other factors also determines whether you can focus on the subject or panorama even if you use the zoom.

Auto focus

Auto focus of lens

The latest Canon lenses have a focus motor (USM) that allows you to take pictures quickly and accurately even of moving subjects. These state-of-the-art motors are extremely quiet and above all eliminate the need to manually focus on the subject thanks to automatic focus. If you are aiming for a 55-250 lens you don’t need to choose a model with a USM motor, but for the 75-300 it can be very useful.

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