Prime vs Zoom Lenses: Choosing the Right Lens for Your Photography


Good evening Dear Reader.  We’re back delving  into another series of articles where I will talk shop.  Mother, if that doesn’t interest you then consider yourself warned.  I will, as the title of this article suggests, be talking about the differences between zoom and prime lenses.  I too, many moons ago, was a beginner photographer, and just starting out with a Praktica MTL3, with a 50mm F1.8 lens, and a Helios 135mm F2.8 lens.  An SLR because in 1987 a DSLR did not exist.   This was my first lot of “gear.” That was then and this is now.  2024.  When buying a “starter” camera, “they” will try and flog you, or offer in a bundle what has become known as the ubiquitous “kit lens.”  Otherwise you will be gazing upon a “huge” array of lenses with some “huge” prices to go with them.  This will generally be included in the more “accessible” range of cameras.  It certainly was for my Fuji XT2 18-55mm zoom lens (24-70mm equivalent for full frame sensor).  Don’t get me wrong, I use my 18-55 lens on my Fuji XT2 and like using it.  BUT, when I bought that camera I bought a 24mm equivalent prime lens for it.

This raises the question about what is a prime lens and what is a zoom lens.  A prime lens is a lens that has a fixed focal length.  A zoom lens allows you to vary this focal length and “zoom” in and out.

Advantages of Prime Lenses

Superior Image Quality

You will generally find that you can obtain a “sharper” image with a prime.  Some of the older lenses and ones that we used in film photography are slightly softer, but we were fine about it then, and this quest for modern sharpness seems to have become more important.  In digital photography, this new and thoroughly modern technology will lead to less distortion, and chromatic aberration, which is indeed an aberration where you might get a blueish outline around the subjects in your shots.

Wide Aperture Capabilities

I touched on the concept of aperture in my Photography 101 article.  The aperture is the hole that allows light to expose the film or your camera sensor.  The larger aperture (indcicate by a smaller f number) allows two things.  More light to hit the film, therefore allowing us to shoot in lower light,  and the separation of the subject from the background by getting that “creamy” bokeh beloved by so many of us. 

Compactness and Portability

The “average” prime lens is more “compact” than the average zoom lens.  Effect number one of this is that you can fit more primes into your camera bag and it will probably be lighter.  Think about what I said in my street photography article.  A camera with a smaller lens is also less threatening than having a massive thing thrust in your face.  Being less threatening is always good, and makes the photographic experience more pleasant for everyone.

Creativity and Artistic Expression

When using primes every shot becomes more deliberate.  The choice of which prime to use becomes more important.  You “zoom” with your feet and not with the lens. I have talked about this mindfulness in my photography tutorial series.   

Advantages of Zoom Lenses

First of all we have to talk about what a zoom lens is.  Well, it’s a lens that allows you to zoom.  Sorry about that, I couldn’t help myself. On a more serious note, it is a lens which glides through a series of focal lengths on the same lens.  I have three zooms for my DSLR, a 16-35mm f4, a 24-70mm f4, and a 70-300 f4 – f5.6, and the 18-55mm (24-70 full frame equivalent) kit lens for my Fuji XT2. With three lenses I am covered from 16mm to 300mm, which for me is a big deal.  My 16-35mm has me covered for wide angled vistas of the Place Cambronne in Nantes, and those distorted obligatory bike shots, to general street photography.  My 24-70 f4 even has a macro function offering me even more versatility.  I would class it as my events lens and can double for street photography, and even street portraits.  It’s a veritable work horse of a lens and was what I used when I talked about spring.  My 70-300 lens is for when I can’t get near enough to my subject without spooking it, be that my children messing around next to the river, or taking shots of cormorants sunbathing on the river Erdre in Nantes.

Convenience and Ease of Use

In my previous paragraph I talked about the different focal lengths that I have with each zoom lens.  At the moment in my camera bag I have my Fuji X100F and its 35mm equivalent f2 lens and my Canon 6D Mark II and my 24-70mm f4 lens.  It means carrying less equipment and being prepared for a variety of shots when on the streets or taking photos for my work.  It also provides for less “faffing about” which is something I love to avoid in general, unless I am prepared mentally and ready for it.

All-in-one Solution

Instead of having a different lens for each situation, I have a solution in my bag that allows me to adapt.  Why buy three lenses when I can have a multitude of possibilities with just one lens?  They might seem expensive, but when you are not a professional, cost is something that has to be taken into account, otherwise you have to be very good at communication with your spouse justifying all these purchases.  Happy wife, Happy life.  Happy Husband, we’ll see about that!

Image Stabilisation

In the last paragraph, I talked about stable marital life, and on my zooms I have image stabilisation, which will allow me a more stable shooting of an image.  In the Photography 101 article I talked about having an exposition of nothing lower than the focal length.  IE with a 50mm lens I should not shoot lower than a 50th of a second to avoid camera shake and therefore a sharper image.  This stabilisation offers me about 4 stops extra to play with, be that having a longer shutter speed, or having a larger aperture and therefore getting more in focus in my image.  

Conclusion

I have talked about how this photography lark is all about give and take.  This is so true in the exposition triangle where everything is a question of balance, but also true in the case of lens choice.  Some will be more expensive but give you more control, and others will offer you more ease of use and versatility. You are the one who ultimately has to decide on what camera gear you need (more than want).  What is most important to you?  How will the lens help you?  What is your budget?  

When all these questions are answered honestly then you will be well on the way to having the kit you need, to do the type of photography that you want to do.  

What would I advise a novice for their first acquisition?  I would say the nifty fifty.  The 50mm is closest to what the eye sees.  This prime generally offers an opening of F1.8 which gives you that sexy bokeh.  

Ultimately the choice is yours alone.  But this simple guide may help you reflect and question yourself and allow you to make a deliberate well thought out decision.  The most important thing is to get out there with your camera, start making memories and training that beautiful eye of yours!

Photography 101: Mastering the Fundamentals


Why Photography?

Hello, Dear Reader,

I’ve decided to take some advice and start a series of articles focused purely on photography. You may already know how photography has impacted my life, and perhaps you’re hoping to discover something similar for yourself. This isn’t a formal course, and the advice I share comes from my own experiences over the years. My aim here is to offer you a useful reference point as you begin or continue your own photographic journey.

Let’s assume you’re new to photography and want to move beyond using your phone’s camera. You’re ready for a “real” camera. Does that sound about right?

From time to time, people approach me and say, “Ian, what’s the deal with photography? How do I get photos like yours?” That’s when my imposter syndrome likes to make an appearance. But despite that, I’m here to share what I know.

To begin, you’ll need a camera. I know it can feel overwhelming, especially if you’ve glanced at the price of a Leica and wondered if it’s worth selling a kidney. (Pro tip: hold off on that.) Leicas are beautiful, but you don’t need to break the bank to get started.

Any camera within your budget is a good starting point, especially if it allows you to control settings manually. Whether you choose film or digital, the fundamentals remain the same. Do you want the retro charm of a Canon AE1, the compact style of a Fujifilm X100F, or perhaps a more professional DSLR? The choice is yours, but remember: the camera is just a tool. It’s how you use it that matters. I’ve written some camera reviews you can check out, and I plan to add more in the future.

Now, let’s talk about the basics.

Exposure Basics

Photography is essentially about light—how much of it reaches your camera’s sensor (or film) and how it interacts with your subject. Too much light, and your image will be “overexposed” (too bright). Too little light, and it will be “underexposed” (too dark). You can, of course, play with these elements intentionally, using over- or underexposure to highlight specific areas of your shot. Photographers often talk about exposing for the highlights or shadows to get the right balance. In film photography we will expose for the shadows and in digital photography we expose for the highlights.

How do I control the light?

It all comes down to balancing three key elements, often called the “Exposure Triangle”: ISO, shutter speed, and aperture. Adjust one, and you’ll need to compensate with the others. Let’s go through each of these in turn.

Exposure triangle, showing the effects of aperture, shutter speed and ISO

Understanding ISO

ISO controls your camera’s sensitivity to light, crucial for getting the right exposure in your photographs. In film photography, it’s referred to as ASA, but the principle remains the same.

  • Lower ISO Settings (100-400): Ideal for bright conditions, such as sunny days, as they produce images with minimal grain or “noise.” For example, using ISO 100 outdoors on a clear day will give you crisp, clear shots.
  • Moderate ISO Settings (400-800): These settings are suitable for cloudy days or indoor lighting. Using ISO 400 allows you to capture good quality images without excessive grain, but expect some visibility of noise when using ISO 800 in dimmer conditions.
  • Higher ISO Settings (1600 and above): Perfect for low-light situations, such as indoors or nighttime photography. While ISO 1600 can help you capture images without a flash, be prepared for more noticeable grain. ISO 3200 can be used for very low light, but expect significant grain in the final image.

Modern digital cameras handle higher ISO settings much better than older film cameras did, significantly reducing noise even at higher values. The key takeaway is to experiment with different ISO settings to see how they affect your shots. Don’t hesitate to adjust your ISO based on the lighting conditions—higher sensitivity can make a big difference in capturing those special moments.

Shutter Speed

Shutter speed determines how long the sensor (or film) is exposed to light. A fast shutter speed—like 1/500th or 1/2000th of a second—will freeze motion, but it lets in less light, so you may need to increase your ISO to compensate. Slower shutter speeds (1/60th of a second or lower) let in more light but can cause motion blur or camera shake. If you’re handholding the camera, try to stay above 1/60th of a second. If you’re using a longer lens, say 85mm, you may want to use 1/100th of a second or faster to avoid shake.

For stability with slower shutter speeds, a tripod is your friend. Just bear in mind that vintage cameras often have lower maximum shutter speeds, but those quirks deserve their own chapter.


Aperture and depth of field

Aperture controls how wide the lens opens to let light in, and it’s measured in f-stops. A smaller f-stop number (like f/2.0) means a wider aperture, which lets in more light and creates a shallower depth of field—ideal for those portraits with a soft, blurry background. A higher f-stop (like f/16) means a smaller aperture, which lets in less light but keeps more of the scene in focus—perfect for landscapes.

Aperture not only affects the amount of light coming through but also how much of your image appears sharp. The trick is finding the right balance for the look you’re aiming to achieve.

Conclusion

One of the great things about digital cameras is that you can experiment with these settings without worrying about the cost of film. You can see the results immediately and make adjustments on the fly. Most digital cameras offer different modes to help you control the exposure. For example, “Shutter Priority” lets you set the shutter speed while the camera adjusts the other settings. “Aperture Priority” does the same for aperture. If you’re more experienced, you can take full control with manual mode.

This is just the first in a series of articles designed for beginners, but it’s always helpful for even the more seasoned among us to revisit the fundamentals. If you have questions, feel free to leave a comment. No question is too simple, and I’ll do my best to respond.

Until next time, Dear Reader.

Post Scriptum

I’ve noticed many of you arrive at this site through this page (probably from Google), so welcome! This is just the first in a broader series on photography. If you found this article helpful, there’s more where this came from. I also cover topics like composition, gear choices such as the Pentax ME Super, which as its name suggests is rather Super, the differences between 35mm and medium format, and my approach to street photography.

My aim is to demystify photography. It doesn’t have to be complicated. Whether you’re just starting out or already have some experience, I hope you’ll find something useful here. Thanks for reading, and don’t hesitate to ask questions or leave a comment. I look forward to hearing from you.