The benefit of mounting a larger format lens on a smaller sensor is you should obtain better sharpness across the frame as you are using an area in the centre of the lens, which will appear sharper and have less vignette (fall of of light) due to physics that the outlying periphery of the projected image is substandard. Before people jump in and start talking about COC, T stop and more technical aspects of lens design and image creation including magnification factors for printing etc, to me that was not the aim of this discussion however it is no less valid as the effects of this are certainly relevant. I disagree :) Field of view is also dependent on the format factor not only focal length! For example, going from full-frame to the GFX sensor, there is a 1.7x increase in size. That's actually less than the difference between APS-C and full-frame. Even 6x4.5, the smallest medium format size, showed smoother tonality and a large jump in resolution when compared to 35mm. In many comparisons, I've done between 16bit medium format cameras vs full frame in areas where you have a bunch of colours meeting you could clearly see more colour detail and more vibrant colours. What you are confusing is the change in FOV between the 6by7 medium format camera and full frame camera for the same focal length. We can see it on this site every day! Less so with the advent of “full frame” sensors. Wait. The 6 x 9 format frame is 56mm x 84mm. If you put a 70-mm lens on a digital SLR camera that has an APS-C image sensor and multiply this focal length by the crop factor (70 x 1.43 = 100), you would produce the same field of view as if you were using a 100mm focal-length lens on a full frame camera. Of course, in the nineties, there were scanning backs, but they were so different they barely factor into this discussion. One question, if I put a 6×7 75mm lens on a 35mm “full frame” dslr (like on a Pentax K-1), what would the accurate field of view be? Put those prints on front of northern window and ask 4-5 friends to come by to tell their opinion about image quality. There would still be differences but I would suggest that they are more a result of filters and profiling than bit depth. 16bit is relevant to color rendition only insofar as one is making large color adjustments where lower bit counts have less data to interpolate to a new color. Medium Format digital cameras have sensors that are significantly larger than full frame DSLR’s. Fuji GFX 100 Review After Using It Professionally for Three Months, Part One: Value, Image Quality, Handling, and Comparison to X-T3. DOF – Depth Of Field (the distance between the nearest and the furthest objects giving a focused image deemed to be acceptably sharp) This is only a problem when there is a common mount shared between cameras with different aperture plates, like Nikon’s F mount, for example when using Nikon DX lenses on Nikon FX/35mm cameras. Although, yea I absolutely agree I think it adds to the mystique. Just bigger AH with no estate wealth or proper education. The common types of crop sensor include APS-C and micro 4/3 systems. On Food shots I get ADs that insist they live view and approve before we take final shot. If somebody wants to test this, please take m43-camera with a 25 mm lens and use, lets say, f/2.8. This Focal Reducer or as some say "Speedbooster" lets you shoot Medium Format lenses with a x0.7 crop on Sony and Leica Full Frame cameras. Think about it this way: You have to go from white to black within 2 inches. As technology gets better and better, it's easier for full frame to catch up to the advantages of medium format. It measures 69.7mm diagonally. Actually, they are using 35mm as a reference, so anyone can understand it. That also means the lenses are larger and the price tag is usually much larger, as well. Popular 6 x 6 format lenses and their 35mm equivalents include the following. Remember, focal length is the distance from the optical center of the lens focused at infinity to the camera sensor / film, measured in millimeters. Of course, there are a few potential pitfalls stopping us laypeople from readily seeing the difference on these fancy new cameras. The 6 x 8 format frame is 56mm x 77mm. Everyone:... In the real world it has no real effect. Mostly marketing mumbo-jumbo, but I love it! Wait. The true focal length of a lens is typically what manufacturer says it is on the lens. What a stupid, illogical notion. Simply input your focal length, sensor size, and max aperture and we'll give you what the 35mm equivalent is of that configuration. Not only will there typically be a wider range of optics from the… Nikon was eager to sell bodies, and marketing the new cameras as cropped sensors wouldn't have helped their cause. @Brent Daniel Actually that's not necessarily true, let's say the smaller sensor is 1/2 the bigger one, the amount of light reaching each of those 1000 pixels depends uniquely on the lens you are using, if you are using a lens that gives you the same FoV but is 1 stop faster on the smaller sensor you will end up with the same amount of light on each pixel = same shot noise. But distilling the medium format look down to depth of field is just silly, and it doesn't reflect the true reasons that the format exists as an option for photographers. Popular 6 x 8 format lenses and their 35mm equivalents include the following. The 645 format frame is 56mm x 41.5mm. Obviously you also need to have enough bit depth to encode those tonal increments or they're wasted. Yes, I was assuming that the light intensity per unit area incident on the sensors was the same. His subjects thank him for not falling down on them. Back in the film days (let me pull out my cane and wag my finger for a bit), the advantages attained by jumping from 35mm film to 120 film formats were huge and obvious. Because the frame is larger, there is more space to make a tonal transition than on 35mm. Unfortunately, we can’t side-step the science here. We also commonly use the phrase “equivalent focal length” to describe the change in the field of view as captured by an APS-C sensor. But that doesn't mean the differences aren't there. MFT – Micro Four Thirds (sensor). Perhaps the best place to start with this topic is to look back at an earlier technological marvel: APS-C. Why? They look from close, far, and everything in-between. When you use 80 mm CZJ for example, what focal length it would be on 35mm camera? Try telling that to a director of photography. The issue of crop factor becomes even more convoluted when taking in to account the smaller formats such as micro four-thirds, one inch and the point-and-shoot formats. What do you think? When moving from a full frame (or perhaps APS-C) DSLR, one of the confusing things to understand can be the focal lengths of lenses for a medium format system. What is the true focal length of a lens? New medium-format systems always seem to arrive with the reassurance that companies will quickly fill out a stable of compatible lenses. If however i have made any glaring mistakes please feel free to highlight them. First is print size. Of course, as time went on, sensor technology became cheaper, and the first commercially available full-frame DSLR was born as the Contax N. It was a flop, but immediately after it came the Canon 1Ds. However, 35mm formats, digital and film, have access to faster glass, easily able to compensate for a smaller sensor/frame size if you want shallower depth. Everyone would get used to this in time and the problem would be solved. The 6 x 7 format frame is 56mm x 67mm. The new GFX and Hasselblad cameras, although amazing, do not have true medium format size sensors. Medium Format vs Full Frame Comparison. This one is extremely important to understand. It is supposed to help those migrating or starting to shoot medium format while coming from 35mm. If each pixel is twice as wide and as high yes, the are is 4 times larger, is just that at the beginning you wrote "imagine you have a sensor that is 2" square and a sensor that is 1" square", guess the 2 instead of the 4 slipped :P, http://largesense.com/products/8x10-large-format-digital-back-ls911/. Congratulations! Even the Nikon D1, back in 1999, equated its new cropped sensor product to the F5 and F100, their 35mm film flagships at the time. Filed Under: Learn, Medium Format Tagged With: crop factor, Film, medium format. When I use that MF-lens on a full frame DSLR, the focal length is unchanged, but due to the smaller sensor of the FF-DSLR it wouldn't be as much covered as with a medium format … - from 2-3 common consumer photo services and 2-3 high grade professional services. Lol, haha, you're like the bad guy out of a crappy romantic film. - produce the common and larger than common prints like 6x4, 8x10, 11x16 and 30x20. Which Camera Manufacturer Has the Best Logo? I realized that I really think about photography in terms of the classic focal lengths — 35 / 50 / 85 / 100 / 135. There is no MF Look. Popular 645 format lenses and their 35mm equivalents include the following. These crop factors are based on a diagonal measurement of the negative, so some of the odd ratios may be a little off if you are comparing them purely to the native 2:3 aspect ratio of 35mm film. APS-C, or cropped sensors, were born as a compromise between economy and quality. Bear in mind that the exposure index is NOT a camera setting, but a light meter and development setting. You said above that a 50mm full frame lens on a APS-C camera is like an 80mm field of view due to the 1.6 crop factor. Thanks for the laugh dudes . Since the focal length has changed, then too has the f-number. Resolution is an easy advantage to overcome with digital. For example, if you put a 75mm DX lens on a full frame camera the FOV will be exactly the same as a 75mm 645 medium format lens on the full frame camera, BUT the image circle may not be large enough to cover the sensor (or film), and you may get vignetting (dark corners). It’s just really equivalent field of view using 35mm as a reference. I feel that large sensors have better tones. It measures 79.2mm diagonally. Next, because most of these medium format sensors are nowhere near true medium format, it's much more difficult to see the difference from full frame. It’s an intense process control that few photographers understand in both printing and plate making. 6 x 8 format backs are also a somewhat common and easy to find option for the Mamiya RB67. To clear up confusion my opinion manufacturers should use the following definitions: T- Stop – To describe the effective light gathering capacity of a lens regarding to a certain sized sensor (film format)(not just for video). So you take a shot, swap camera and take a shot. There is a factor of 2 difference in sensor widths which should give you the "full frame look" compared to the smaller sensor. But this dude above does not. If you keep the shutter speed same, you will get exactly the same result. I made so, don't care the pixel peeping when I know a 1x1 cm area in a 30x20" print where to look at the difference that would reveal it by comparing two prints side by side multiple times. Field comparison: medium format VS a modern full frame DSLR and premium prime lens. In the end, what truly matters is the preferences of the photographer, their needs, and their ability to justify the purchase of the camera they use. That's why you can have 40+ megapixel cameras in cell phones. I’ve explained above how crop sensors are smaller than full frame sensors. That simply isn't true. Good point. Hi Paolo. COC – circle of confusion (optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source) Give the files to a good image editor who task is to get best out of the files. It has nothing to do with physical distance, as we aren't exactly getting close to the planck length here. Cropped medium format sensors include sensors for Pentax and Fujifilm medium format cameras as well as the Hasselblad X1D. P.S. You don't need to write a novel about it, it's obvious. You could ask an art director why they want and expect high res 16 bit MF, primo printers, expensive ink, premium paper or just stay in dark like a Photographer. Nicknamed the ideal format for its closeness to 8x10 in ratio. If the simple calculator doesn't suit your needs, we also offer calculators for crop factor based on sensor size and completely custom lens + sensor crop factor calculations. Of course, most of us understand that this is a misnomer and that the 50mm lens does not change at all to become an 80mm lens when used on a different camera. For example, the Nikon 50mm f/1.4G lens (below) has a true focal length of 50mm, irrespective of what camera you use it on. I can't say I blame you! Now imagine we project an even tonal gradient across each sensor. They couldn't care less about appropriate viewing distances. If however the focal distance is reduced by moving closer to the subject to achieve the same FOV when using a MF camera compared to a 35mm camera, due to the camera being closer to the subject, the DOF will appear shallower but that is only a function of the camera being closer to the subject. As you can easily deduce, the 6 x 6 format is a square format, or a 1:1 ratio. In case you don’t know what a medium format camera is, we’ll explain it briefly. Not really. Focal length is focal length .. so (provided it fits) ANY 75mm lens will give exactly the same FOV on a given aperture plate (i.e. As far as I am aware, no medium format cameras share a common mount with a full frame/35mm camera.. so you should never have that issue when using a medium format camera. The history behind crop factor is long, but what you need to know is that focal length is described using 35mm film as the reference point. The goal, however, is to provide a reasonably accurate and consistent measurement in order to identify “equivalent focal lengths” to your full frame lenses that you know by heart. This whole crop factor conversation becomes stupid since a medium format sensor is NOT CROPPING anything. I'm not so sure that I can completely agree. A lens with the same focal length on a full frame camera, would be described as having a “normal” field of view. I enjoy medium format more than small format. I hang my prints, I sell those and no one ever goes to pixel peep anything, even if they would, they wouldn't see the difference between GH4 and A7r III. Kudos to your wikiresearch, but you’re not helping anyone. Some say full frame has a look that APS-C can't touch. 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