Front Load Washer Retaining Ring

[0.05 lb] Purchased to be used on the front objective lens of a Meopta S2 82mm spotting scope. The threads on the filter were not deep enough or long enough to engage the threads on the retaining ring of MeOpta's spotting scope's objective lens. So the filter was sent back. On very close inspection of MeOpta's S2 objective lens retaining ring it was found not to be threaded to it's very end, and also setback in rather deeply. So NO filter could be screwed into/onto it. I always use UV-Haze filters on all my spotting scopes. Which seems to be becoming the norm now a days with knowledgeable Birder's to not only cut down on the ever present haze. But, also to protect the front objective lens from dust & debris, and possibly scratching it from improper or carelessly cleaning it. Also to protect the objective lens from impact and possible breakage. It's much-much cheaper to replace a broken or damaged UV-Haze filter then to replace a front objective lens! Meopta was informed of the problem, and need to replace the present retaining ring with one threaded all the way to the end so that a UV-Haze filter can be threaded onto it. They stated that the suggestion would be taken under advisement; and that probably sometime in the near future a newer designed retaining ring might be fitted on S2 spotting scopes? I personally would like to see this as the S2 Meopta spotting scope I tested was an excellent spotting scope that compares very favorably against the big three brands. And at a very-very reasonable price! And this Formatt UV-Haze HD filter appeared to be of very high quality. And should be an excellent choice for any lens needing an 86mm sized UV-Haze filter. And the price was very reasonable for the quality and size of this rather large filter.

[44 mm to 49 mm] This ring flawlessly adapts things that are 39mm in the rear end to things that are 49mm on the front end!

[Zipper] I haven't actually used this yet, but I did load it, weigh it, and pretend to put it in an overhead for practice. Seems perfect for my gear. I travel with a DLSR, mirrorless and 4 lenses. There is room for that and a change of clothes if a bag gets delayed. The front compartment easily holds my 15 laptop. The laptop compartment sort of locks by attaching the loop on the zipper to the integrated lock for the case (watch the video). The case rolls easily. I agree with the reviewer who said it would be nice if the bottom of the case was flat, but with my gear that is not a problem. The recommended accessory GRID-IT organizer of 10X12 does not fit the interior front pocket and looks like it has been removed as a suggestion. All-in-all this looks like it will be a great bag. It will be my carry-on but seems sturdy enough to gate check on smaller planes.

[Polypropylene] Simple product that does exactly what is needed. Negatives load easily and pages store easily in 3 ring binder. Keep in mind that these are longer than a typical 8 1/2 x 11 binder.

[1.05 lb] Use your Leica S lenses on a Leica SL whilst retaining autofocus. Invaluable.

[Polycarbonate] Easy to install. 3 Velcro strips + a retaining spring For a light more controlled. The best !

[37 mm] Fits LEE 82mm WA lens adapter ring. I can now keep the adapter ring on my lens and use this cap to protect the front element.

[0.125 lb] These are a great set of sights for the Walther PPS. The lime yellow front ring is extremely fast to acquire in the large U-shaped rear notch. I love how the rear sight is completely blacked out, thus not distracting your attention from the bright front sight. The photoluminescent paint on the front ring can be charged with a light source for an even brighter/bigger front sight in dark conditions. The tritium vials glow nice and bright.It's also cool that the rear sight has a cocking ledge that can be used to manipulate the slide one handed. These sights aren't cheap, but you sure get a lot of features for what you pay. Plus you can't go wrong with a quality brand like Trijicon.I used a brass hammer and punch to do the installation myself. The rear sight went right in without any excessive force or filing to fit. The front sight was a nice precise fit in the slide cut out. B&H had the best price on these online and the sights arrived at my door in only 3 days!

[2.8 oz (80 g)] This lens (the L-mount version) seems plenty sharp at F8, although it slightly softens at the left and right edges. I saw no evidence of decentering during a couple weeks of almost daily use. Also I saw little or no evidence of chromatic aberration at F8. It's a little bit glowy at F1.4 but this goes away by F2.8. My TTArtisan 50mm F1.4 L-mount Lens is well built and fits tightly on my Sigma fp L but not super-tight (tighter than my Sigma lens but not so tight that I'm worried about it). Front lens cover is machined aluminum and quite nice but easily lost, so I put it back in the box (a very nice box!) for safekeeping. According to the box, the lens weighs 436 grams (almost a pound). It is about 54mm in diameter (2 1/8) and about 68mm long (2.7) when mounted on the camera. Aperture ring has click-stops (yay!). The aperture ring and focus ring operate smoothly and are well damped, although the focus ring seems to have a slightly tighter spot midway (not much tighter though, and I did not notice it for several days). The lens does not move around in the helicoid, indicating that the focus helicoid is well-made and close-tolerance. I'm using a 49mm pinch-type front cap (Sigma LCF-49 III). My Sensei Pro LHM-49 threaded metal lens hood ($8.29 and 3/4 deep) does not cause vignetting and it takes a 58mm front cap so I can leave it on the lens. I am also using a 49mm Hoya EVO clear protector filter ($42) on the front of this lens at all times. It's worth spending money on a high quality protector, so that the image quality potential of the lens is not compromised. Bottom line is that this lens delivers great images with plenty of sharpness for an amazingly low price.

[APS-C] This little lens is devastatingly underrated. It's compact, sharp, and built like a tank. It's also quite stylish when mounted to my Fujifilm X-T2 and X-T3. The focus ring is nicely dampened and turns smoothly. The aperture ring turns smoothly as well, although I'd prefer a clicked aperture ring. Since the lens is so compact, it's extremely easy to turn both rings by mistake. Like other fisheye lenses, you CAN NOT mount a filter in the front or rear of this lens. The lens hood is solid metal and perfectly protects the giant front element. The lens cap is nice too. A push on style cap that slides over the hood. Be sure not to lose it, because it isn't easily replaced. Here's a sample taken with my Fujifilm X-T2. Shot at ISO 200 f/5.6