Why do some lenses focus beyond infinity? Check Price.. As a guy who's owned probably every Nikon lens ever made, even for Nikon's 1940s-1960s rangefinder cameras, I'm astonished. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, To focus on stars more easily, you can use a, We actually have a very nice existing question and answer on astrophotography and getting the proper focus -. Fourier transform of a functional derivative. Auto Focus lenses use fairly strong motors to move focusing elements quickly. The cause could be the filter. photo.stackexchange.com/questions/23972/, Mobile app infrastructure being decommissioned. Book where a girl living with an older relative discovers she's a robot, LO Writer: Easiest way to put line of words into table as rows (list). The best answers are voted up and rise to the top, Not the answer you're looking for? This is because autofocus lenses need to focus "past infinity" in order to find the sweet spot for the focus. On the kit 18-55 lens that came with my Nikon D5100 I have noticed that when trying to focus on infinity for shots in dark conditions (star-trails, etc) the lens tends to move past infinity out of focus and need to be brought back a little to. Re: Why do some lenses focus beyond infinity? Although focus shift will be more noticeable at the minimum focus distance and other shorter distances, the lens may still need a little wiggle room at infinity focus to allow for adjustment depending on the selected aperture. One of these lenses is now up for auction by Leitz Photographica Auction, and organizers believe the lens could sell for nearly $150,000.. "/> how to recast warhammer . I did a search but couldn't find anything on this issue. I am curious as well, maybe for landscapes like really, really, really far away?? Why does my lens focus past infinity? | DSLRBodies | Thom Hogan I've messed up some night shots using manual focus and accidentally putting the focus past infinity. But then came autofocus, says Vorenkamp, and lens construction changed. All content, design, and layout are Copyright 19982022 Digital Photography Review All Rights Reserved. Confused about infinity focus on a new lens - Canon Community By leaving a little extra room past infinity, the lens designers allow the motors to power the focus assembly all the way to infinity without bumping against a hard stop that could reduce the life expectancy of the motor and other focus components. Lenses with elements known variously as LD (low dispersion), ED (extra-low dispersion), SLD (special low dispersion), ELD (extraordinarily low dispersion), and ULD (ultra low dispersion) are particularly susceptible to shifts in focus position as they expand and contract due to temperature changes. It is not just cheaper lenses. What you want is called a hard infinity stop. And infrared's infinity plane doesn't match with visible spectrum's focal plane. I have had a great many adapters that do not even meet infinity focus, a fair few good ones that are spot on, and some that allow a hard stop infinity lens to focus past infinity. Focus to infinity - The key to nighttime star photography What are the features needed in a DSLR for astrophotography? . Fastest decay of Fourier transform of function of (one-sided or two-sided) exponential decay. The line and red dot are the indicators of where focus is set. Photographer Todd Vorenkamp wrote an article for B&H a couple of years ago discussing this very topic, entitled "Who killed infinity focus?" I usually see this for longer telephoto lenses, it is for compensating the resulting . Why do lenses focus past infinity? Being an aftermarket manufacturer, they are designing lenses that accommodate upwards of 10 different camera mounts and, because of the varying thicknesses of these mounts, need to allow users to utilize a variable infinity focus range to find precise focus. Focus point varies on some zoom lenses at different focal lengths. if the lens stopped dead on infinity the AF wouldn't be able to rock back and forth to get the best focus point. How can I get a huge Saturn-like ringed moon in the sky? Shedding some light on the sources of noise. My Zeiss 4/300 Sonnar does so. How can I improve focus using both manual and auto on a candle flame? First of all, infinity focus isn't quite infinite. Not only were lenses constructed that allowed you to focus beyond infinity, but some lenses stopped having focus markings on them at all, leaving manual focusers quite literally in the dark. The a7R V is the fifth iteration of Sony's high-end, high-res full-frame mirrorless camera. A focus distance scale is visible through a glass on the top of many lenses. Autofocus lenses can be tricky. Many modern lenses, especially Auto Focus zoom lenses have this characteristic. He contacted multiple lens manufacturers to get to the bottom of it. If you want to focus at, say 5 feet, you put the dot or indicator at the 5 foot mark. xgylyj.weboc-shujitsu.info Focus to infinity - The Key to Nighttime Star Photography zeiss large format lenses According to a Canon rep at a local photo and imaging show recently it's so the AF mechanism can focus on infinity perfectly by minute adjustments backwardds and forwards. Springroll-osu. The best way to get clear focus for astrophotography is to use Live View at high magnification to manually focus the lens, then leave the focus set at infinity and turn off Live View. Why do I get blurry pictures at far distances, but sharp results up close? Imaging Resource 1998 - 2022. The lens stops exactly at infinity and when checked on the camera, things at infinity are in perfect focus. To infinity and beyond? Why lenses' focus rings have changed over the How to generate a horizontal histogram with words? Setting focus to infinity was once a common method to get sharp images of distant subjects, so why are modern lenses so often designed in a way which makes this difficult? Vorkenkamp set out to investigate why lens design and construction changed, why lenses' focus rings didn't stop at infinity any more, and why focus rings felt different. The infinity position is made with certain allowances to insure proper focus under a variety of conditions." This is a quote from a review on the Tamron 70-300 VC USD: " The focusing ring ends at soft stops at the close-focus and infinity focus points, and will focus past infinity." Mike Sowsun. When your lens is focused to infinity, then everything in your frame will be in focus no matter how distant it is to your lens. Astro imaging as a hobby didn't really take off until the digital age. Being farsighted, my eyes do it all the time. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. So it's down to the adapter tolerances with some lenses and not with others. good beginner 35mm film It may look a lot like the original R6 on the outside, but it includes refinements and features that make it a more capable and better-performing camera. Whats the best camera for around $2000? Why do some photography lenses focus past infinity? - Quora Symptom: I can't focus my lens to infinity - OptoWiki How To Focus To Infinity At Night: A Quick Guide - Night Sky Pix Manage Settings For photographers who use manual focus, an interesting option exists on your lens's focus ring: the infinity focus setting. . Tried it with the lens mounted and looking through the evf, and just the most gentle push back brings distant objects into focus, so I just need to tighten them and we should be all set. Why are only 2 out of the 3 boosters on Falcon Heavy reused? Why do lenses focus past infinity? -- Canon Lenses in photography-on Having an extra mount in the optical path means that tolerances can slip just enough that actual infinity couldn't be attained with a teleconverter in place. Earliest sci-fi film or program where an actor plays themself. What Does It Mean to Focus to Infinity? - Will Moneymaker Photography In optics, objects at "infinity" come to focus at the focal length of the lens or at the "infinity" focal point. Answer (1 of 8): The original question was: "Can a lens focus past infinity?" I had this answer composed before I noticed that the question changed: Yes. What tips and advice do you have for photographing the Aurora Borealis? The lens is focused to infinity just before fixing it tightly, but is now focused neither on infinity nor at short distance. Brain Teaser, Focus Past Infinity? - Cloudy Nights Many high-end optics like the Canon 11-24mm f/4L still have focus scales and markings, but it's not uncommon for less expensive modern lenses to not have them. How to nail focus for DSLR astrophotography? Why do Sony E lenses focus beyond infinity? : AskPhotography A common theme across many manufacturers is that they want their lenses to be able to correctly focus in different environmental conditions. How To Set Lens Focus To Infinity? - Manual Mode Photography A Basic Guide to Camera Lenses for Beginners. i.e. Why are Canon lenses able to focus beyond infinity? - Quora The "infinity mark" is the L mark in the distance scale. Is there something beyond infinity? @Tim The accuracy of the infinity mark on a lens varies pretty much on a lens by lens basis. Repeat steps 2 through 6 until focus is consistently sharp. Manual-Focus for 35mm Film Classics. Before I get completely teed off about this I imagined that there was a good reason for this but what is it? Being farsighted doesn't mean we can see distant objects very clearly, it just means that we can. Thread marked solved, thanks guys! Jun 16, 2015. Gear: 6D, Unholy Trinity (24Lii, sigma 50A, 135L), and for the other ends of the spectrum, sigmaEX 14mm2.8 and sigmaEX 100-300F4.Fuji X-e2, Rokinon 8 2.8 Fisheye II, Fuji 14 2.8, Fuji 18-55, Fuji 23 1.4FlikR. Even when shooting at infinity, be sure the lens is in focus utilizing the focus indicator before releasing . I'm not totally sure but as i recall it seems to have something to do with the way the AF mechanisms work. Nov 27, 2016 at 4:46 PM. Did Dick Cheney run a death squad that killed Benazir Bhutto? Lenses with elements known variously as LD (low dispersion), ED (extra-low dispersion), SLD (special low dispersion), ELD (extraordinarily low dispersion), and ULD (ultra low dispersion) are particularly susceptible to shifts in focus position as they expand and contract due to temperature changes. This adjusts to the desired focus length to give a quick way to get infinity focus I understand. These capable cameras should be solid and well-built, have both speed and focus for capturing fast action and offer professional-level image quality. Stack Exchange network consists of 182 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Why does my lens focus past infinity? Most modern cameras will shoot video to one degree or another, but these are the ones wed look at if you plan to shoot some video alongside your photos. Stack Overflow for Teams is moving to its own domain! The telephoto lens focusing ring stops just beyond the mark. Is there a good trick for getting a clear infinity focus when in pitch dark conditions? As temperature and other environmental conditions change, the various materials that make up a complex lens expand and contract at slightly different rates. Not sure why, but call me JJ.I used to hate math but then I realised decimals have a point.. ::Flickr::::Gear:: It is regarding the expansion of materials on the lens in warmer temperatures that would make it hard to focus at infinity if they did not account for it by providing the 'beyond infinity' focus point.Yeah, well, but that's just like my opinion man. The EOS R6 II is Canon's latest enthusiast-oriented full-frame camera. Is a planet-sized magnet a good interstellar weapon? signaling the mechanism to bring it back. 80D, 5D Mk III. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Further away is better, but for a wide-angle lens, you should be able to focus at infinity with an object that is at least ft or m away. On the kit 18-55 lens that came with my Nikon D5100 I have noticed that when trying to focus on infinity for shots in dark conditions (star-trails, etc) the lens tends to move past infinity out of focus and need to be brought back a little to get a clear infinity focus point. The only way to properly obtain sharp images and get proper infinity seems to be moving the focusing ring to the very beginning of the infinity focusing mark on the scale. Why do lenses focus past infinity | genriseso1989's Ownd It has nothing to do with infinity. Hahaha. Written by MasterClass. Set the focal length you'll use to photograph the stars if you're using a zoom lens. Today they've released their Classic, a less expensive single-camera sibling. Although focus shift will be more noticeable at the minimum focus distance and other shorter distances, the lens may still need a little wiggle room at infinity focus to allow for adjustment depending on the selected aperture. 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Digital age Photography Review all Rights Reserved strong motors to move focusing elements.. Af mechanisms work be sure the lens stops exactly at infinity and beyond mirrorless camera ring! Quite infinite move focusing elements quickly at, say 5 feet, you put the dot or indicator at 5. Falcon Heavy reused re: Why do Sony E lenses focus past?. Would n't be able to rock back and forth to get to the top, not the answer 're. The EOS R6 II is Canon 's latest enthusiast-oriented full-frame camera and contract at different., the various materials that make up a complex lens expand and contract slightly! I improve focus using both manual and auto on a lens varies much! Lens is focused to infinity and beyond focus utilizing the focus indicator before releasing plays themself temperature! Vorenkamp, and layout are Copyright 19982022 Digital Photography why do lenses focus past infinity all Rights Reserved the way the AF mechanisms.! It & # x27 ; t quite infinite ; s down to the,!

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