Pentax DA 21987 35mm

The Pentax DA 35mm f/2.4 AL is a budget prime that delivers sharp, reliable images at a price that's hard to beat, often under $165 USD. It's incredibly light at 124g and gives you a classic 52.5mm equivalent view on APS-C. The plastic build and lack of weather sealing are the main compromises, and the bokeh won't win any awards. But for Pentax shooters wanting their first prime, this is the one to get.

Sharpness is the headline here. The single aspherical element does real work keeping spherical aberration in check, and owners consistently report edge-to-edge sharpness that embarrasses lenses costing three times as much. Our database puts the optical performance at the 35th percentile overall, which sounds mediocre until you remember this is a sub-$200 prime competing against glass that costs mortgage payments. For the price, the resolving power is genuinely impressive. You'll see crisp detail in portraits and landscapes alike, especially stopped down a bit.

Autofocus sits at the 54th percentile, which is about average. It's not the fastest focusing lens we've tested, and it's not silent either. The screw-drive AF makes a bit of noise, so don't expect to sneak candid shots in a quiet room without someone noticing. But for everyday shooting, family photos, street work, it gets the job done. The f/2.4 aperture lands at the 22nd percentile, which is on the slower side for a prime. You won't get that dreamy background separation, and the bokeh quality is honestly one of the weakest points here, sitting at the 6th percentile. Six aperture blades don't help. If you want creamy backgrounds, this isn't your lens. But if you want sharp, reliable images in decent light, it delivers.

Stacked against the competition, the Pentax DA 35mm f/2.4 AL occupies a unique spot. The Tamron Di III VC 28-300mm f/4-7.1 is a superzoom that covers way more focal range, but it's bigger, heavier, and slower at the wide end. The Sony E PZ 16-50mm f/3.5-5.6 OSS is a kit lens with stabilization, but it can't match the Pentax's sharpness or low-light capability. The Canon EF-S 18-135mm f/3.5-5.6 IS USM is another zoom that trades image quality for convenience. None of these zooms can touch the Pentax at f/2.4.

The Viltrox AF 20mm F2.8 FE is an interesting alternative if you want something wider and brighter, but it's designed for Sony E-mount, not Pentax K. The Nikon NIKKOR 20059 is a different beast entirely, aimed at Nikon shooters. For Pentax users specifically, there's really nothing else in this price range that offers a fast-ish normal prime with autofocus. The trade-off is clear: you give up zoom flexibility and modern features like stabilization, but you gain sharpness, speed, and portability that no kit zoom can match.

This is where the Pentax DA 35mm f/2.4 AL absolutely shines. In the US, prices range from $127 to $165 across six listings. That's a $38 spread, so it pays to shop around. Newegg tends to have the best deals in our tracking, often landing near the bottom of that range. In Europe, you're looking at EUR 159 to EUR 180 across four listings, with the best prices typically showing up in Germany and France. Canadian buyers will pay CAD 179 to CAD 204.

For what you get, this is one of the best price-to-performance ratios in the Pentax ecosystem. The build quality percentile sits at 93, which might surprise you given the plastic construction. But that ranking reflects how well the lens holds up relative to expectations, not that it's machined from billet aluminum. The social proof is strong too, at the 81st percentile, backed by 855 reviews averaging 4.5 out of 5 stars. When a lens this cheap gets that many happy owners, you know it's doing something right.

The Pentax DA 35mm f/2.4 AL is one of those lenses that makes you wonder why every brand doesn't have a cheap, cheerful prime like this. It's a plastic fantastic in the truest sense. You get a 35mm focal length on APS-C, which works out to roughly 52.5mm full-frame equivalent. That's the classic 'normal' view, the one that sees the world pretty much like your eyes do. It's the lens you leave on the camera when you don't know what you're going to shoot.

Who's this for? Pentax DSLR shooters who want to step up from a kit zoom without spending a fortune. It's also a great first prime for anyone learning photography. The f/2.4 max aperture isn't going to blow anyone's mind on paper, but it's a solid step brighter than the f/3.5-5.6 kit lenses most people start with. And at 124 grams, you'll forget it's even in your bag until you need it.

What makes it interesting is the value proposition. We're talking about a lens that regularly sells for around $127 to $165 USD depending on the vendor. For that money, you get an aspherical element, Pentax's Super Protect coating, and autofocus. It's not weather sealed and the build is mostly plastic, but the image quality punches well above what the price tag suggests. This is the lens that makes budget photography fun again.

Portrait photographers should look elsewhere. The f/2.4 max aperture and 6-blade diaphragm produce bokeh that ranks in the bottom 6% of lenses we've tested. If you want that creamy, blurred background look, this lens will frustrate you. Save up for a Pentax 50mm f/1.8 or f/1.4 instead, which will give you much better subject isolation.

Also skip this if you shoot with older Pentax film bodies. The lack of an aperture ring means you can't control the aperture on cameras that don't support electronic aperture control. And if you need weather sealing for outdoor work in rough conditions, this isn't the lens for you. Pentax makes WR versions of several primes that would serve you better in the elements. For everyone else, especially budget-conscious APS-C shooters, this lens is an easy recommendation.

For Pentax APS-C shooters on a budget, this lens is a no-brainer. It's the first prime you should buy. The 52.5mm equivalent focal length is versatile enough for street photography, family snapshots, travel, and even some landscape work. Our database scores it highest for street at 45.5 out of 100, with travel and budget close behind. The sharpness will make your kit zoom feel like you've been shooting through a dirty window this whole time.

But it's not for everyone. Portrait shooters should look elsewhere. The portrait score of 30.4 out of 100 reflects the weak bokeh and slower aperture. If you want subject isolation and creamy backgrounds, save up for something faster like a 50mm f/1.4 or f/1.8. And if you shoot in wet or dusty conditions regularly, the lack of weather sealing is a real limitation. For everyone else, this is the lens that makes you fall in love with primes.