optical quality - even the humblest Vivitar or Hoya 28mm will outperform the 7-artisans. Both need a good lens hood to perform at their best (and remember to buy a telephoto length one as this is for M4/3 crop factor use) in extremely sunny weather it seems to be sometimes difficult to see what’s in focus and what’s not. I had this problem particularly on snow — snow produced a lot of highlights in the viewfinder which is again similar to focus peaking highlights. I mis-focused several images because of this. Split image manual focus assist might be better in this use case. That was in reference to the Wesley 24/1.8. For that lens, the markings were in the right relative distance to each other, but the lens focused past infinity, so I marked a spot for where the infinity stop should actually be on the lens barrel. When I set my camera to ISO-Auto, the first option on the list, which takes 3 shots and combines them, and with f/1.8 I can really get some good night shots.

Thanks for that video. I'm going to try setting the peaking display to low so that it might be a bit more accurate for me. I love the image quality of this lens, but the autofocus is really slow, and always hunting. No problem for landscape photography, but this lens definitely isn`t a good choice for family photos, traveling, street photography... As the Alpha 7 range has been a game-changer for cameras, so I suspect Samyang is becoming a game-changer for lenses. The 7artisans 25/1.8 looks to me like a rebranded Zonlai/Discover/Hengyijia 25/1.8. The other brands also offer a 35/1.8. Both the 25mm and 35mm use the same lens housing, and I suspect the distances marked on the focus scale would be decently accurate on the 35mm, but they didn't bother to print a separate focus scale for the 25mm. I have a Wesley 24/1.8, which seems to have identical optics to the 25/1.8, but with a different housing. The focus distances are actually not bad, though the center mark is off by a little bit. Easy to adjust for it, though. I placed a piece of gaffer tape to mark where the accurate distance should be read. The only complaint I have is the focus scale, which is sufficiently at odds with the reality through the EVF to make scale/zone focus a non-starter. The barrel contains feet and metre distance engravings, progressing (in feet) from 0.6, 1, 2, 5, 16 and infinity markings. Subjects at approximately 5ft - pin sharp at f1.8 though the EVF - showed closer to the 16 ft than 5 ft markings, and the void between the two makes hyperfocal shooting a gamble. It's possible, but you'd have to work out your own sweet spot and most users will confirm distance through the viewfinder. I assume the discrepancy is the result of the same lens being produced for a variety of sensor formats.I wondered for some time if it could be some optical effect and not real bubble. But since Hengyijia copy arrived and it has nothing like that, it must be real. Lens hood

I'm thinking of getting this lens as a wider and smaller alternative to the FD. Would you suggest I just get the Panasonic 25 f1.7 instead? Today I thought I'd take it for a walk in one of our town's pleasant parks just to try it out. I'll post some images from that lens made a few hours ago. None of my pictures are earth shatteringly precious or even very interesting. In addition I had trouble finding focus using the outer focus ring on the lens - probably because my 74 year old eyesight isn't really top notch anymore nor am I used to, as I once was, manual focusing. However, IMHO, I find the lens quite acceptable and a little gem for the price.For this review, the lens was tested on a Fujifilm X-S10 using Imatest. Want to know more about how we review lenses? I like the short focus throw of the lens, it's less than 1/3 turn from infinity down to 0.6 feet. Not too short of a throw, but much better than many of my legacy macro lenses where you have to turn the ring almost 3/4 for full range. I also like the textured machining on either side of the focus ring, very nice to operate with one finger.