It takes f/16 and carefully focusing on the midframe to get usable across the frame sharpness. 2.3 meters, focused at the subject and refocused for every photo: 1.3 meters, focused at the subject and refocused for every photo. (Sound familiar?) In most projects, the largest chunk of the budget consists of resource costs: the rate-based and fixed costs of people, equipment, and materials. FAST GOOD CHEAP. Indeed not on full area, mostly in middle and around but still…. Share all the game discounts here to gain some karma and make some other redditors happy :-). However, since sharpness outside the center drops sharply at focus distances longer than 1,5 meter, I never have the issue in practical use. For full body portraits and infinity work only the very center of the image is usable and if this is what you do often this is not a lens for you. The concept of the Iron Triangle has emerged over time out of the following thinking: 1. (the GOOD service) 02 01N FAST SERVICE GOOD GOOD SERVICE CHEAP WON'T BE CHEAP WON'T BE FAST 02 01 JUST 3 DAYS, DON'T WANT HURRY UP! The responsibility of a fail-fast module is detecting errors, then letting the next-highest level of the system handle them. Have anyone from the team, or any user reading this, tried the new Mekie 50mm f1.2? 81. All in all I think flare resistance is average, the orange flare pops up more often then I would like. Cutting budget without adjusting schedule or scope will lead to lower quality. I found a wide angle hood with a 55mm thread. However, in most cases I don’t see it even if I look for it. The best sharpness near the corners and edges of the frame can be obtained around 1.1-1.3 m distance when focusing on these areas. “Crash” the schedule: Add resources to finish tasks faster (money). I use my D series lenses even more than Nikon’s G 1.8 series. Especially at f/1.1 it is quite hard to nail focus on the eyes. WELL DONE, GOOD JOB! The lens is made from metal and glass only and feels very dense. The 7Artisans 50mm f/1.1 feels very nice. Is this based on actual testing? If you want a similar hood, eBay search for Wide Angle Hood 55mm. For example, if you discover that a software feature will take longer to complete than forecasted and you have signed a contract saying you will deliver that feature (scope), you either have to move the finish date out or add resources to finish it on time. Yes, it’s not as sharp as I would normally expect from such a lens. The 7Artisans 50mm f/1.1 is a very cheap super fast 50 mm lens that hit the market in 2017. Sooner or later, you’ll face a project that’s set to overshoot an inflexible deadline. Thank you! FYI for anyone who has read this far, it is $269 at Amazon right now (9-24-19). The project triangle is also known as the “iron triangle” and, less poetically, the “triple constraints.” Whatever you call it, it amounts to the same thing: You can’t change a project’s budget, schedule, or scope without affecting at least one of the other two parts. For others, getting it to market on time matters more. Hi Juriaan, (I have original A7). 81. If you want to experiment with more creative photography and play with different renderings and thin depth of field, try this one. Cheap+Fast=NOT Good. Cut tasks that aren’t on the critical path, if there are any (cost). Microsoft … A PCX filter might help to reduce field curvature, but I did not test this myself yet. There will be several identical ones offerd.