Think I found it. Add display: block; here:

.homepage__image img {
  max-width: 100%;
  width: auto;
  display: block;
}

Using a HTML/CSS block, add this to the HTML section:

<div class="homepage">

  <div class="homepage__image"><img src="https://photos.smugmug.com/2019/KL-Randoms/n-RNrKGN/i-c4HqdWm/0/a0303d5d/X4/i-c4HqdWm-X4.jpg" alt="" /></div>

  <div class="homepage__wrap">

    <div class="homepage__content">
      <h1>VIKTOR.35MM</h1>
      <p>photographer</p>
      <button><a href="/Images">View Photos</a></button>
    </div>

    <div class="homepage__social"><a href="https://instagram.com/viktor35mm/"><span class="sm-fonticon sm-fonticon-large sm-fonticon-Instagram2"></span></a></div>

  </div>

</div>

Add this to the CSS section:

h1 {
  font-size: 20px;
  letter-spacing: .5em;
}

h1, p {padding: 0 0 1.5rem;}

.homepage,
.homepage__wrap,
.homepage__social {display: flex;}

.homepage__image img {
  max-width: 100%;
  width: auto;
}

.homepage__image,
.homepage__wrap {
  width: 50%;
  flex-direction: column;
}

.homepage__content {
  padding: 1.5rem;
  text-align: center;   
  margin: auto;
}

.homepage__content button {
  padding: 0;
  border: none;
  background: none;
  text-transform: uppercase;
}

.homepage__content button a {
  padding: 1rem 2rem;
  border: 2px solid;
  background: white;
}

.homepage__content button a:hover {
  background: rgba( 0, 0, 0, .1 );
}

.homepage__social {
  padding: 1.5rem;
  align-items: flex-end;
  justify-content: center;
}

@media only screen and ( max-width: 800px ){

  .homepage {display: inline;}

  .homepage__image,
  .homepage__wrap {width:100%;}

}

When the screen is less than 800px, it will put your content under your picture.

@PJPhoto said:
How does it look? I've been told the logo looks blurred so would be good to know if others feel the same...if it is blurred I'm not really sure what I'm doing wrong as the original png is very clear! (not that I'm bothered by the logo, it was only a 5 minute text job in photoshop!).

Yes, the logo does look a little blurry but not to an extent where it would be disturbing or otherwise would look bad. My guess is that it's because it has a transparent background, and those images have their issues.

As for your site design, I like it. It's clean, simple, logically structured and easy to navigate. Personally, I do not like to have the little house icon in the breadcrumb navigation displayed because the proportions to the text are way off, but that's just very subjective. Oh, and I also like your imagery work!

Cheers,
Can

Hello,
There is a slight blur to the logo. I may have not noticed it if you didn't bring my attention to it.

From here on, these are my opinions - you do what you want to do.
The location and other tags are distracting.

Since you state in your About page (which isn't one of the many links on the top of the page) you are into landscape, I suggest you make that a main Gallery. From the Landscape gallery you can divide up my location if that's important to you.

Personally I would prefer them to be organized by type first (shore, mountains, city, etc.) and then by location - only because I am not familiar with those locations. And if you tag them properly, potential buyers can find what they want.

I suggest you re-write, rearrange your about page - get to the point of the site first. If I'm interested, I'll read on. Knowing you also have a Flickr account with images that you decided not to bring to your portfolio site isn't important to me.
And speaking about the purpose and photos - I suggest you either push to sell your images (they are quite good) or remove a bunch of them because a casual visitor will be overwhelmed with the number of images. You could then use the excess images to fill out your Instagram account - that will help draw to your site. And if do decide to ramp up your IG activity - be consistent with what you post. Don't post cars, fish heads, and northern lights back to back. People who follow IG'ers do so for specific content.

Other Social - if you are not going to Tweet on a regular basis, remove the button from the site.
The Facebook link is broken - if you don't post regularly, remove the button.

There you have it - opinions from a random dude on the Internet.