You can find his site at for a quick consise summary of the top 20 lenses in various price categories go to this article on bob s original site best canon eos lenses. Hi, i actually have the tamron 500 sp f8 and i think its a t2 mount. Light passes and refracts through the unsilvered front side of the lens element, reflects off the aluminized or silvered back surface. Canon currently produce over 60 different lenses for canon eos bodes. This new target produces much more consistent results. Even if i set my z7s noncpu lens data, my z7 still doesnt record the focal length or shooting aperture in its exif data, as my. Interesting reading to be sure and im glad that several of my lenses are these lists. I bought the kit lens with it, but i am looking to expand my lens collection. I tried this on my canon 300d without much success, nothing wrong with the image i just found manual focus soooooooooooo hard to get right with the shallow depth of field. Camera lens testing vignetting bob atkins photography. Though this lens has been around for quite some time, bob tells us why it is a good value lens. Tamron 1750 or canon 1855 is in canon ef and efs lenses. When specifying a lens to meet the demands of machine vision applications, systems developers must choose products that faithfully reproduce the object being imaged.
It was originally developed and sold as commercial software by idealab, but it was. Understanding distortion in machine vision lenses vision. His opening statement reads here is a list of the best lenses from canon, sigma, tamron and tokina as determined by user opinions from my lensplay website. Special pages permanent link page information wikidata item cite this page. The fraction of users using a 2x with 5004 and 6004 lenses on a regular basis is apparently pretty small compared with all the users of their other professional lenses which are f2. I have switched from the bob atkins focus chart described in the video to a new, crosshatch target i created in ps. The fixed lens camera market may be a bit niche, but its here that youll find some of the best cameras you can buy.
The canon eos 650 is a 35 mm singlelens reflex camera. When you want more and ore and more background blurring, the easiest way to get that is to use a longer focal length, one in which the massive lens diameter openings at each fstop value are significantly larger than with short focal length lenses. Camera and lens database canon slr lens talk forum. These ratings represent a compilation by bob atkins and not necessarily his opinions. Cameras, lenses, printers, software, books, magazines. The camera has a database of about 20 canon lenses. In the eos 50d canon have extended this facility to apply the correction in the camera to images. Get answers to your questions in our photography forums. Exposure, program, aperture priority, shutter priority and depthof field. Theres a lot here, so be sure to use the search function to help you find what you are looking for. Starter lenses for canon eos dslrs bob atkins photography im not going to lie, this.
A common complaint seen on web photo forums is that cameras andor lenses arent achieving accurate focus. In the digital rebel t1i canon have extended this facility to apply the correction in the camera to. Imatest is an excellent suite of software tools designed to test lenses and. The required correction is stored in a database and applied on a lens by lens basis when one of the database lenses is used. Mangin mirrors are simply lenses with one side of the lens being either aluminized or, in the case of tamrons mirror lenses, silvered for peak reflectivity. Fullframe lenses softer on crop sensor bodies page 5. This also works well, with the long ruler, and the software, and is time consuming but nails it. Camera lens testing bob atkins photography home page. Another difference is that the 60d uses sd cards rather than cf cards. Take a closer look at this affordable sigma telephoto zoom with photographer bob atkins as he investigates its optical stabilization, speed, and more. Well, unless youre shooting a static subject with the camera and lens on a tripod, it probably doesnt mean much.
Sensors ranging from apsc to fullframe are designed to match their lenses, which cover ranges from 2875mm equivalent, so image quality is topnotch. The canon eos lens database bob atkins photography. Standard target vector pdf can be scaled to any size and keep highest quality standard target 600dpi png use for printing if the pdf is inappropriate multipoint focus target vector pdf can be scaled to any size and keep. Camera lens testing sharpness, chromatic aberration and distortion. Tired of missing shots when you need to change lenses or add an extender. See why bob atkins describes this lightweight telephoto lens as the best bang for the buck. Lens testing is seen as a way to make sure you got a good one. For a while now canon have provided the ability to correct vignetting during raw conversion using canons dpp software. See more ideas about lenses, photography equipment and camera hacks. It can calculate the depthoffield given the focus distance and lens settings, or the. It costs more, but is a fraction of the price of your lens. How to use vintage lenses with your dslr using manual focus lenses on canon eos bodies a common question is whether older manual focus lenses from other. This old style swappable tmount cheap mirror lens is sold under a variety of brands. A question that seems to be coming up more and more frequently on web photo forums is how to test a lens.
Probably the most frequent complaint or cause for concern about a lens is that its not sharp, but what does that mean. The following target images are available for download also supplied in zip and dmg packages with focal software. The md mount means its really cheap but not unfortunately usable on the k01. A guide to testing camera lenses part 1 an introduction to lens testing and evaluation. The canon os utility software can be used to check which lenses are in the database and to add others for which the data is available. I found this excellent post below from about using manual focus lenses on canon eos bodies via this great article at photojojo. A simple guide to basic tests you can do on camera lenses to make sure they are performing up to expectations. The canon eos 1d mkiv includes a highlight tone priority htp setting. Another option that works for some folks is to print a bob atkins photo test chart from his website, and stick on a wall. This is a small windows program i wrote in visual basic as a handy calculator for a number of. Camera lens testing physical condition bob atkins photography.
Sqf was used for years in the photographic industry but has remained unfamiliar to most photographers. Interestingly, this page indicates that as of 2016, at least some lenses still have this date code stamped on them contradicting other references that say the date code system was phased out in 2010 or 2011. The filter, film and scene databases are customizable. If you want to really try to see how well a tc does in combo with one of your lenses bob atkins is a good model to emulate. Lensalign and focustume enagble a user to optimize lens performance by. There are quite a number of questions about wideangle lens selection and about this lens in particular. You cannot directly input data, you have to use the sliders. Most are in the ef series which will operate on all canon eos slr camera bodies whether 35mm, full frame digital or cropped sensor digital. Canon date codes from bob atkins photography eos faq. Canon cameras digital can be popular around the world as a possible image resolution gear and data methods. Part 6 lens testing for resolution, chromatic aberration and distortion. The focustune software enables semiautomatic measurement of two things.
Browse other questions tagged lens software zoom focal. A simple guide to basic tests you can do on camera lenses to make sure they are. Facebook twitter youtube instagram sign up for our weekly newsletter. How can i visualize or simulate the effect of different focal lengths. Canon eos 60d, 50d, 7d and rebel t2i compared bob atkins. The canon eos lens database contains information about and specifications of all past and present lenses made by canon for their eos system, from the efs 1022 wideangle for crop sensors to the ef 12005. Its shutter is durabilitytested to 200,000 exposures 50,000 more than on the eos1d, the body is highly weatherresistant with more than 70 gaskets and seals, and the cameras lens mount is made of stainless steel and is fully compatible with all canon ef, tse and mpe lenses. Canons eos rebel sl3 eos 250d is the latest in the companys line of diminutive dslrs. His results emphasise my original post base lens quality is key. Bob atkins site lensplay contains a database of canon mount lenses with quality ratings assigned by himself and user feedback. Having read a lot of different opinions on various m42 5mm, i thought it might be fun to let you be the. I actually dont have it on my 40d and ive never had the need for it with the lenses i own. Camera lens testing focus testing bob atkins photography. Acutance and subjective quality factor sqf are measures of perceived print or display sharpness.
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