TTArtisan is definitely starting to get some serious attention over their series of low priced yet relatively high performing prime lenses. Last year’s AF 56mm F1.8 has proven to be a popular budget portrait lens (only $129 USD!), and I gave it a positive review. They had released an AF 35mm F1.8 just a few months before that, but they decided that they could do better, and less than a year later, they released the AF 35mm F1.8 II last month, a lens that was reduced in size and but improved in performance. I was pretty impressed by their drive to improve, and it was reflected in my review. Between those two lenses, we have the standard prime (50mm) covered, the short portrait telephoto (85mm) covered, but what about the wide angle 35mm prime that typically completes the trilogy of primes? Consider that now covered in the form of the new TTArtisan AF 23mm F1.8. Priced at around $125 USD, this is yet another budget lens that is surprisingly good. Dive into my video review or read on in my text review to find out more.

Follow Me @ YouTube | Patreon |  Instagram | Facebook | DA Merchandise | Flickr | 500px | X

__________________________________________________________________________________________________

Thanks to TTArtisan for sending me a review copy of this lens.   As always, this is a completely independent review.  All opinions and conclusions are my own. I’m doing this review on a 40MP Fujifilm X-H2 camera. You can find the visit the TTArtisan listing page for the lens to get more information.

__________________________________________________________________________________________________

You may have been a bit confused about my reference to 35mm, 50mm, and 85mm lenses, but because this series is made for for APS-C cameras, the focal length of each lens must be magnified by the crop factor of the cameras that they are made for. I’m reviewing the TTA 23mm on Fuji X-mount, but it will also eventually be available on Sony E-mount and Nikon Z-mount. The crop factor of all those systems is 1.5x, which means that a 23mm lens becomes 34.5mm, a 35mm becomes 52.5mm, and a 56mm becomes an 84mm full frame equivalent. The math isn’t perfect, but essentially you have a 35mm, 50mm, and 85mm full frame equivalent series of lenses…just high compacted!

As you can see, the 23mm isn’t quite as compact as the MK II version of the 35mm F1.8, but it is still a nicely compact lens that was a nice fit even on the X-M5, which I just reviewed and is one of Fuji’s most compact cameras.

I think that the TTA 23mm will probably be a hit, as while it isn’t a perfect lens, it delivers really stellar image quality, focuses just fine, and proved to be a great walkaround/street kind of lens.

You probably aren’t going to find a better autofocusing 23mm lens for less, but does that mean that this is the lens for you? Read on to find out.

Build and Handling

The little TTArtisan AF 23mm F1.8 makes a very positive first impression. I’ve been really consistently impressed by how nicely built and cosmetically attractive these budget lenses from TTArtisan have been. The TTA 23mm has an anodized black finish and everything is made of metal and glass.

It is a simple design, with no switches on the lens barrel nor an aperture ring (Fuji shooters will probably miss this!). Fortunately you can function just fine without either of these, and AF | MF switches on Fuji lenses are rare, anyway, though that’s not true on other platforms like Sony or Nikon. But the simple metal body comes off as looking clean and classic.

At the rear of the lens we have a metal lens mount complete with the appropriate electronic contacts; aperture will be controlled from the camera. Aperture control seems to work well; it is quick and responsive and the aperture iris blades are not noisy, with just a light click as the blades open and close.

There are nine aperture blades, but you can see below, they aren’t particularly rounded and don’t deliver a fully circular shape even by an aperture like F3.2:

Up front we have a fairly stylish looking front façade complete with 52mm filter threads (which are blessedly shared across all three lenses in this series, which is great for filter sharing!)

The included lens cap has a new font for the TTARTISAN logo imprinted on it, and I think it looks smart and modern.

TTArtisans first few lenses in the series featured somewhat odd lens hoods. While the lens hood was made of metal, it had an odd design that terminated in something looks like an anamorphic adapter (a rectangular opening) which prohibited either the use of filters or mounting the lens cap…plus it meant that you absolutely couldn’t reverse the lens hood for storage. TTArtisan changed that for the MK II version of the AF 35mm F1.8, and I’m happy to report that they’ve continued that trend here. We have a conventional hood that can be easily reversed for storage and doesn’t interfere with filters.

The manual focus ring is another positive, however. It is ribbed in metal and moves with a nice amount of resistance. The active focus area will automatically magnify when you start to focus, and this helps visually confirm accurate focus. The focus ring is not linear, so the amount of “throw” will vary based on the speed. As per usual on Fuji, manual focus at slow speeds does not feel linear, feeling instead like you move in little steps of focus rather than a smooth progression.

TTArtisan has continued with their design where the rear lens cap has a USB-C port along with electronic contacts inside that will allow you to transfer firmware updates to the lens through a computer. It’s an interesting alternative to having a USB-C port built right into the lens, though I do prefer the built-in option in case you lose the rear lens cap at some point.

TTArtisan has still not mastered the ability to design their lenses with great close focus ability. The minimum focus distance is 30cm, and, while they haven’t listed the maximum magnification, I estimate it as being around 0.14x.

That’s not great for a 35mm lens, but it is enough magnification to at least let you play with isolating a subject a bit.

So while this is a rather simple design, it is nicely executed. Other than the lack of features (no aperture ring, switches, or weather sealing), you would easily think of this as being a much more expensive lens. I suspect that those who are purchasing a lens from this series for the first time will be very pleasantly surprised by how premium their cheap lens feels.

Autofocus for Stills

As before, TTArtisan has chosen to equip this lens with a lead-screw type STM focus motor.

Fuji remains the least favorite of the four brands of cameras that I own and test, though the recent firmware updates on my X-H2 to V5 and beyond seem to have made some small improvement. Autofocus performance here is on the slow side of average, with decent speed in most situations. If you are intentionally going from a close to a distant subject (as I do in my tests), then autofocus speed feels a little more deliberate.

There isn’t a lot of noise in focus, though you will hear faint whines and clicks if you put your ear near it. I don’t hear any focus motor noise under normal shooting, however, even with my eye at the viewfinder. What you will hear is a little “clack” from the aperture blades opening and closing if you partially hold down the shutter.

Autofocus accuracy was good, whether I was using it to capture family moments:

…or capturing fancy holiday treats…

Eye detect worked well (as is pretty expected at this point). I had no problem with people or pets in getting accurately focused results.

No, autofocus isn’t in the upper tier of performance, but in real world use, I had zero problems getting the shots I wanted in all the settings I used the camera. No problems in a dim restaurant, for example.

I wouldn’t use this lens to try to capture fast action, but outside of that, no problem.

Video Autofocus

Fuji’s video AF on their cameras remains somewhat primitive, so take these results with a slight grain of salt and expect them to be better on Sony or Nikon. Focus pulls feature some obvious steps, with the majority of the pull occurring, then a slight pause, and then the final adjustment. In a couple of my pulls I saw a third microadjustment as the focus algorithms debated their final choice. Deliberate focus pulls remain an area of weakness for lenses in general on Fuji, but I can also see a difference here from some native Fuji lenses that I recently reviewed, so at least part of that is due to the AF in the TTA 23mm.

Focus seemed smoother in some clips where I moved in a more natural fashion towards a subject.

My hand test (where I alternately block and then unblock the camera’s view of my face with my hand) proved somewhat better. I saw a fairly decent focus transition from one subject to another, though there is some obvious focus breathing so that perspective does change somewhat.

Focus seemed to be stable when I had a static subject that wasn’t changing. There wasn’t any obvious focus noise during any of these tests. This isn’t the most sophisticated focus system out there, but it does a fairly decent job so long as you don’t try to force too many focus pulls.

Image Quality Breakdown

The TTArtisan AD 23mm F1.8 has an optical formula with 11 elements in 9 groups, including one High Index element and two Extra Low Dispersion elements. The MTF chart shows a fairly flat optical performance, with a good (not great) center performance, a slightly stronger mid-frame performance, and then so drop in the corners.

The MTF chart suggests only a minor improvement when the lens is stopped down. In fact, the corners show a slightly odd result, where in the corners there is actually a bigger separation between the sagittal and meridional axis. Bottom line is you shouldn’t expect amazing corners (ever, really), but the lens is should prove very competent everywhere else.

There is literally no platform that I test on this is more challenging than Fuji’s 40MP APS-C sensor, as it has (by far) the greatest pixel density. A full frame sensor would have to be more than 90MP to achieve a similar pixel density, which is 50% higher than the current maximum full frame resolution of 61MP. While the budget TTArtisan 23mm F1.8 is not anywhere near the top resolving lenses on the platform, it is also far from embarrassing itself and delivers a fairly strong optical performance from F1.8 on.

This shot holds up at a pixel level, too, with very nice detail in the bodice and fabric textures.

Let’s take a closer look at both strengths and weaknesses here.

If we look at vignette and distortion, we see both a great success and a great weakness.

There is the tiniest amount of pincushion distortion, requiring just a -2 to correct, but vignette required me to max out the sliders to get the result on the right. You will DEFINITELY need to correct vignette in your images.

Early TTArtisan AF lenses really struggled with a fringing, but that’s been an area where TTArtisan has really focused on improvement.

This real world shot of moisture on a window with light pouring through it shows a nice, neutral result.

There are only minimal amounts of LaCA (lateral chromatic aberrations), with little fringing on either side of black and white transitions.

I never really saw any kind of real world issue with LaCA.

So how about sharpness and contrast? Here’s a look at the test chart:

And here are the crops from across the frame at F1.8 at a 200% magnification.

You may notice that I have sampled the upper left corner rather than the usual lower right crop that I normally take. The reason for this is that my copy clearly has a centering issue, and the lower right corner is incredibly soft. If I take the same image and compare the lower left and the lower right, you can see that the lower right is much softer.

I didn’t notice the centering issue as much when shooting at landscape distances. If I sample both the upper left and the bottom right corners from a real world F5.6 image, I’m not really impressed with either of them, but one doesn’t look radically different from the other.

Shots taken on the lower resolution X-M5 work pretty well, though I would say that I actually probably preferred X-H2 images for the most part.

Real world contrast looks pretty decent, and in this shot from our New Year’s party, you can see that the detail really looks quite good. Not what I would call pin-sharp, but I suspect that this is plenty of resolution for most people.

It’s good that wide open sharpness is fairly good, however, as the lens doesn’t really sharpen up a lot as you stop it down (as the MTF chart suggested). That’s not to say there isn’t improvement, however. You can see see that the contrast and detail definitely looks different between F1.8 and F5.6 here:

As the MTF chart suggested, I find that the mid-frame results actually look the best. The F4 result looks better than what I see in the middle of the frame.

Stopping down to F5.6 and F8 shows mostly good results across the frame, but there is definitely ebbs and flows for sharpness depending on where you look. Here, for the example, the upper edge looks good.

After that, however, diffraction will become a factor, and the image quality will be slightly softer at F11 and then moreso at F16.

Sharpness isn’t top tier (lenses like the Sigma 23mm F1.4 or the Fuji 23mm F1.4 WR are clearly sharper), but, to be fair, this is a lens that costs $127, whereas those lenses are anywhere from $600-900. I took plenty of images that I liked with this lens.

The bokeh quality is pretty good. Perhaps the biggest weakness (for some), will be some serious flattening of specular highlights near the edge, giving it a bit of a swirl look in some situations.

In other situations, however, the bokeh looks fairly soft:

Even where the setting is a bit less favorable (more in the transition zone), I felt like the bokeh was pretty good.

An image like this is a little more jittery due to a lot being in the transition zone, but I don’t dislike the image. The bit of swirl effect works for me.

TTArtisan has had their struggles with flare resistance, and there’s definitely some remaining issues here. Perhaps the worst effect I saw was on a very cold night where a street light was right out of frame, but I still got a strong corona of flare artifacts.

In many ways I think the lens is more susceptible at large rather than small apertures. This wide open (F1.8) shot has definitely got some flashing and loss of contrast going on.

The same shot when stopped down looks radically different.

This window shot of Nala is pretty washed out due to veiling.

Then again, there are some who love optical flaws like these, feeling they add character. Beauty is in the eye of the beholder! In general, however, I felt like I got plenty of images that I liked, which is pretty impressive from such an inexpensive lens.

If you’d like to see more images, check out the image gallery linked here.

Conclusion

It’s pretty remarkable that a company like TTArtisan has progressed to making autofocus lenses that are fully usable and functional and yet still cost so little. A person could get this 23mm, the 35mm II, and 56mm F1.8 lenses from TTArtisan for around $380. That’s amazingly good value, and it feels like ten years ago that would have been the going price for one lens like this…not three.

When I dive deeply into the technical performance of the TTArtisan AF 23mm F1.8, I could find a number of things to criticize. But the truth of the matter is that in normal use, and particularly when shooting at larger aperture values, I didn’t find the lens fun to use, and got plenty of images that I liked just fine.

And that’s the real story here. Those on a tight budget can rejoice that once again TTArtisan has delivered another perfectly usable lens that can be had for under $130 USD. What’s ironic, however, is that TTArtisan has had a new Viltrox AIR series lens to compete with alongside each of these released. The Viltrox AIR 56mm F1.7 was released at just about the same time as the TTArtisan 56mm F1.8. The excellent Viltrox 35mm F1.7 AIR lens was released right after the 35mm F1.8 II, and, right on cue, the new Viltrox 25mm F1.7 AIR has just been announced. My experience has been that the Viltrox lenses tend to be sharper, but they are also typically priced about $50 higher. If you’re on a tight budget, that $50 might be the difference maker. And if you want something a little more “old school” feeling, the TTArtisan AF 23mm F1.8 might be just the thing. The AIR lenses are more corrected, more modern, while the TTArtisan AF series has a bit more of a retro vibe. Decisions, decisions….

Pros:

• Very nicely built for the money
• More conventional hood design
• USB-C port in rear lens cap allows for firmware updates
• Good autofocus for stills
• Fringing is fairly low
• Low distortion
• Acceptably good sharpness on 40MP
• Nice bokeh
• Has some character
• Amazing price

Cons:

• Heavy vignette
• Some flare issues
• Corner sharpness is weak
• Video AF can shows a lot of steps (on Fuji)

_________________________________________________________________________

GEAR USED:

Purchase the TTArtisan AF 23mm F1.8 @ B&H Photo | Amazon | Amazon Canada | Amazon UK | Pergear

_____________________________________________________________

Purchase the Fujifilm X-H2 @ B&H Photo | Adorama | Amazon | Camera Canada | Amazon Canada | Amazon UK | Amazon Germany 

_______________________________________________________________

Purchase the Fujifilm X-T5 @ B&H Photo | Amazon | Camera Canada | Amazon Canada | Amazon UK | Find it Used at KEH 

________________________________________________________________

Purchase the Fujifilm X-S20 @ B&H Photo | Adorama  | Amazon | Camera Canada | Amazon Canada | Amazon UK | Amazon Germany |

_________________________________________________________________

Want to support this channel? Use these affiliate links to shop at: B&H Photo | Amazon | Adorama | Camera Canada | Amazon Canada | Amazon UK | Ebay | Make a donation via Paypal

Buy DA Merchandise https://bit.ly/TWIMerch

Keywords: TTArtisan AF 23mm F1.8, TTArtisan, TTArtisan 35mm, TTArtisan AF, Autofocus, TTArtisan 23mm F1.8, 23mm, F1.8, STM, Review, Fuji X, Sony E, Review, Telephoto, Action, Tracking, Hands On, Dustin Abbott, Real World, Comparison, Sharpness, Bokeh, Flare Resistance, Autofocus, Image Quality, Sample Images, Video, Photography, Sony a6700, Sony a6600, Fujifilm X-T5, Fujifilm X-H2, let the light in, #letthelightin, DA