format in 1956, 6x6 is not the only Hasselblad film format. Key Features. On that 6x6 this lens had a 35mm equiv. I am assuming that Rolleiflexes/cords use a square format, as the right-way-around pentaprism had not been invented when the cameras were introduced . Diagonals are more accurate than long edges when comparing formats of different shapes, so I'll use the 43.2mm diagonal of 35mm vs. the 79.2mm diagonal of the 56mm x 56mm—aka 6x6—'Blad. The diagonal of which is 67.30mm making the standard lens as 65mm possibly 70mm. 645 6x6. I also wasn't a big fan of the 5 blade straight aperture of the Hasselblad V lenses. Actual . Now, for those who like the 35mm format in those proportions then this is a correct comparison. The calculator is compatible with all the standard film formats such as 6x4.5, 6x6 and 6x7 etc. In other words, a 100mm lens on 645 sees about the same angle of view as a 60mm lens does on 35mm film.. Framing in both formats is equivalent only in the rare case that subjects have to be framed diagonally. The one I am reviewing will be with the 75mm (approximately 45mm in 35mm equivalent) lens. 12 Mos. This means that 80mm is about right or maybe 75mm. Even this is not quite right as the 35mm format has a ratio of 1:1.5 whilst 645 is about 1:1.35. the smaller frame. It is often asked, perhaps because there is no single answer. I believe 100mm is considered "normal" for 6x9. On a Canon you multiply it by 1.6x to get 28.8-53.4 in its 35mm equivalent. For a 4 x 5 it's about 150mm (don't know the precise dimensions of the image area). As other Quorans noted here, digital and film aren’t completely comparable because of different structure (digital photosensitive diodes vs. film grain). Consequently, the spread in equivalent focal lengths depending on what 11x14 The Mamiya 6 rangefinder camera was introduced in 1989 as and shoot solely 6x6 120 medium format film. Promo Financing * Add to Cart. Since the known focal lengths of 35 mm format lenses are also nominal, with their true focal lengths rarely known, Conversely, when the lenses are chosen so that the horizontal angles of view are The actual focal lengths differ, Ok, then what is similar aperture value in 35mm? Actual image size 56 x 56 mm. Diagonals are more accurate than long edges when comparing formats of different shapes, so I'll use the 43.2mm diagonal of 35mm vs. the 79.2mm diagonal of the 56mm x 56mm—aka 6x6—'Blad. 645 film (56 x 41.5mm) has 2.6 times the area of full-frame 35mm (36 x 24mm), or a 0.62075x crop factor.. It is interesting to note that the original Nikon cameras, made just after the war, were this very size. The difference in aspect ratios of the two formats then shows itself in the horizontal angle of view, which is And of course, this is just 35 mm; with medium and large format you get even more detail, and the larger you keep going the possibilities keep skyrocketing. 4x5 6x12 . The 35mm equivalents of those two focal lengths on a 6x6 camera would be 35mm and approx 80mm. Focal . We can also use that crop factor to determine the 35mm-equivalent … Making the 645 format the same proportions as 35mm is roughly in agreement with the manufacturers. an 80mm lens on a MF FF would be the focal length equivalent of a 45mm lens on a 35mm FF sensor. Using Jim's diagonal rule you need to multiply the RB67 lens focal length by 0.48 to get the 35mm equivalent. Also called 6x6, 2-1/4 x 2-1/4" or simply "Two and a Quarter." 6 x 6 is actually 56 x 56 from which the diagonal is 79.20mm. On a 35mm-based body like my Sony A7 III, a 105mm lens is a telephoto. On top of that very few sizes of standard B & W printing papers are of the same proportions. 35mm is by far the cheapest way to go when getting into shooting film. an 80mm lens on a MF FF would be the focal length equivalent of a 45mm lens on a 35mm FF sensor. I'm conducting a test here at work (photography company) using the above 3 formats and was wondering if there is a good way to determine equivalent apertures for DOF. The differences in both horizontal and vertical aspects then still make it very hard, if not impossible, to With medium format 6x6 film you get 56 x 56 = 3,136 sq mm, which is 282 megapixel. A 35mm lens on a 67 format camera is probably a little wider than a 19mm equivalent in a 35mm camera. But most 35mm cameras used the 50mm.But even this doesn’t work as the 6 x 6 format is really meant to be 645 which is 41.5mm x 56mm, unless of course you take pictures for calanders. Actual image size 56 x 56 mm. As a result the table only gives an approximation of the equivalent 35 mm format focal lengths. 35mm. The one I am reviewing will be with the 75mm (approximately 45mm in 35mm equivalent) lens. As Figure 1 shows, the different aspect ratios of both formats lead to a rather different framing: the 6x6 the same (Figure 3), the difference in aspect ratio leads to a 1.5 times larger vertical angle of view on 6x6 format. I'm looking to expand my lens collection for it, but i'm not sure what I want to grab, since there are quite a few choices in focal length and I like to visually see the differences. See All Details. For example, a 6×6 camera has a crop factor of .55. not only from this nominal focal length, but also from that of other Zeiss/Hasselblad lenses having nominally The medium format (6x6cm) equivalents of those two on a 35mm camera would be approx 120mm and 250mm This would be equivalent to 50mm on a 35mm or FF digital camera. https://petapixel.com/2014/12/18/comparing-image-quality-film-digital ( "Diag" in the table above.) Simply input your focal length, sensor size, and max aperture and we'll give you what the 35mm equivalent is of that configuration. For example, if you like using an 85mm lens on a 35mm camera, you would need to use a 200mm lens on the 6x9 format to get the same angle of view. The equivalent 35 To keep the table simple, the choice was made to use the nominal focal lengths instead of the true focal This feature is very useful, effectively making two great cameras in one. 645,6x6(hassblad) and 6x7 are all medium format but will have different ratios. I'm looking to expand my lens collection for it, but i'm not sure what I want to grab, since there are quite a few choices in focal length and I like to visually see the differences. If you have the kit 18-55 on a nikon you multiply it by 1.5x which is 27-82.5mm in its 35mm equivalent. A digital camera would have to be 156 megapixels to give you the same kind of detail as 35mm film. If I have missed anything, please contact me and let me know. Hasselblad's 6x6 format. Making the 35mm format the same proportions as the 645 format. The simple answer is any lens Full Frame or DX lens that you put on a cropped sensor camera you multiply to figure out its 35mm equivalent. From the diagonal of a film format can be easily calculated. The calculator is compatible with all the standard film formats such as 6x4.5, 6x6 and 6x7 etc. mm format focal lengths will be longer accordingly. There are other "medium format" formats - 4.5x6, 6x7, 6x9 for example. On that 6x6 this lens had a 35mm equiv. See All Details. 1.5 times as large on 35 mm format as that of the equivalent lens on 6x6 format. mmCalc is a super simple photography focal length calculator. lengths. Ok, what is DOF for 80mm F2.8, 400mm F2.8, 135mm F4, 500mm F5.6? https://petapixel.com/2014/12/18/comparing-image-quality-film-digital Angle of View Chart . Here are some other advantages and disadvantages of 35mm film that you may or may not have thought of. 6x9 . Instead, Equivalent focal length means the specification of the hypothetical different lens used on 35 mm film that gives the same Field of View as the different lens that you actually use on your sensor size. 35mm equivalent focal length (mm): You can find information on the sensor size in your camera in the manual, product information of the manufacturer of on DPReview.com . A 35mm lens on a 67 format camera is probably a little wider than a 19mm equivalent in a 35mm camera. On true 645, the DOF is equivalent to f/1.7 on 35mm. Horizontal Angle Of View. More-or-less: not quite an average of all of the above, but a reasonable fit that's close enough on both 6x6 and 6x4.5 to a 35mm focal length that is actually used. aspect is chosen to be equal is also smaller. This ruled out TLRs. Focal . Manufactureres usually only state the diagonal angle of view of the lenses they (24 x 24) + (36 x 36) and find the square root of the answer. In other words, a 100mm lens on 645 sees about the same angle of view as a 60mm lens does on 35mm film.. 35mm is the world's most popular film format. It’s just really equivalent field of view using 35mm as a reference. For such people, the Pentacon Six is an obvious choice, with its similar layout and handling characteristics. 8x10 4x10 . It depends on how you calculate it. Regarding exposure, nothing changes; f/2.8 is f/2.8. ... 35 mm back to top of page. The 35mm equivalent lens is shown for reference. For example, an 180mm lens on a 4x5 camera would have an equivalent focal length of approximately 54mm in 35mm terms and for 8x10 it would be 27mm. "Approximately" is the key word. 5x7 6x17. For critical purposes, an actual test of all Ever since Hasselblad introduced a film magazine producing 16 frames in 6x4.5 Search Within Results. produce. I heard that F2.8 is F1.4 in 35mm. Though It interchanges between 3 lenses, 50mm, 75mm and 150mm. A very frequently asked question is one about the 35 mm format focal length equivalent of the lenses used on being much smaller than the 6x6 format, the angles of view will be smaller too. It interchanges between 3 lenses, 50mm, 75mm and 150mm. They are plentiful for 35mm, and there are some for 6x6, but I haven't been able to find any for 6x4.5. A detailed comparison. So the calculation now alters as the diagonal of a 32mm x 24mm is exactly 40mm. The Mamiya 6 MF is an interchangeable lens medium format rangefinder, which will shoot 6×6 frames on both 120/220 roll film or, with the aid of optional masks, permits you to change to 6×4.5 medium format and panoramic format 35mm film. ... APS was the 1990's equivalent of the Disc and Instamatic (126 and 110) formats. Even the results of these calculations may be misleading, as the 35mm format is rectangular (longer on one side than the other), while the 2¼ square (6×6) format is square. Older manual lenses can be had for pennies on the dollar of their original price as well. Further, if you crop the MF image to a rectangle, you will of course be reducing the angle of view. subject just fitting inside the 6x6 frame vertically will not fit inside the 35 mm frame. de Bakker. The USA forbade their import as it didn’t suit Kodachrome processing mounts of 24mm x 36mm. are the same (Figure 2). 35mm equivalent focal length (mm): You can find information on the sensor size in your camera in the manual, product information of the manufacturer of on DPReview.com. It is also interesting to note that a 50mm lens is based on a 2” lens which is a hint longer in focal length. Item Condition : 8+ ... 50mm (35mm Equivalent) Leaf Shutter; Flash Sync to 1/1600 Sec. Angle of View Chart . I believe 100mm is considered "normal" for 6x9. As a result, the diagonal often has to be taken as the basis for comparisons. It was replaced in 1999 for journalism use by digital with the introduction of the Nikon D1. We’ll be limiting ourselves to the digital domain which means scanning but we’ll use a microscope to see how much detail there is actually on the film itself for those who might want to use the analog darkroom. Let’s look at leaving the formats as they are. This would be equivalent to 50mm on a 35mm or FF digital camera. 5x7 6x17. A 43mm lens on a 67 format camera gives approximately the same angle of view as a 21mm lens on a 35mm camera. ... APS was the 1990's equivalent of the Disc and Instamatic (126 and 110) formats. 6 x 6 is actually 56 x 56 from which the diagonal is 79.20mm. 35mm film = 50mm ; 6x6 = 80mm; 4x5 sheet film = 150mm; If I want a tele on my 6x6, I go up based on the 80mm normal. And so I settled on the Mamiya RZ67. 1. count lines - should give us the absolute peak resolution of the film files. A 43mm lens on a 67 format camera gives approximately the same angle of view as a 21mm lens on a 35mm camera. 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. If you know that 50mm is “normal” and that, say, 90mm is a “portrait” field of view in the 35mm (Film/DSLR) world, then what you need to know is these focal lengths yield different fields of view in the medium format world. There is something called a crop factor. The 35mm equivalents of those two focal lengths on a 6x6 camera would be 35mm and approx 80mm. 35mm film = 50mm ; 6x6 = 80mm; 4x5 sheet film = 150mm; If I want a tele on my 6x6, I go up based on the 80mm normal. What is Equivalent is the size of the Field of View produced by the two combinations of lenses and sensors. 80mm was considered a "normal" lens for 6x6 medium format - the Rollieflex, a 6x6 camera, came with a fixed non-interchangeable 80mm lens. It obviously is very easy to crop the larger frame to produce an image exactly the same as that produced inside The Mamiya 6 MF is an interchangeable lens medium format rangefinder, which will shoot 6×6 frames on both 120/220 roll film or, with the aid of optional masks, permits you to change to 6×4.5 medium format and panoramic format 35mm film. So F2.8 in true 645 is F1.7 right? It is OK for landscapes but portraits look odd, as the picture is too tall. None conform to 35mm format with the exception of the enprint size of 6 x 4 recently available for that very purpose. A very frequently asked question is one about the 35 mm format focal length equivalent of the lenses used on Hasselblad's 6x6 format. Pentax Zoom Normal-Telephoto 80-160mm f/4.5 Autofocus Lens for 645N. Second instalment of the series on the evolution of the Hasselblad packing material online. The TLR can be turned on its side to get a vertical format but it is scarcely convenient. The aspect ratios of 6x6 format (1:1) and 35 format (1:1.5) differ considerably, and an answer will depend on what aspect is used in the comparison. 645 film (56 x 41.5mm) has 2.6 times the area of full-frame 35mm (36 x 24mm), or a 0.62075x crop factor.. It is Not your lens. Basically, this is a number that will translate that medium format lens to what a 35mm camera lens would be. With medium format 6x6 film you get 56 x 56 = 3,136 sq mm, which is 282 megapixel. The aspect ratio is the same as that of the original 6x6 format, so the same considerations apply. So it is up to you whichever format suits you best as to which are the correct equivalent focal lengths. The difference in the aspect ratios of 35 mm format and 6x4.5 format is small. ( "Diag" in the table above.) Yes, it is true that at a given field of view and aperture, there is a shallower depth of field than a 35mm equivalent. So, if you multiply an 80mm lens by .55, you’ll get 44mm. 8 x 10 needs only 30 x 24 as does 16 x 20. From this you can see that 80mm is roughly equal to a touch over 50mm in 35mm terms, which is probably how the factory arrived at these focal lengths. Making the 6 x 6 format the same proportions as 35mm format, Making the 35mm format the same proportions as the 645 format. The theoretical focal length of a Zeiss (Kyocera/Contax) 50mm f1.7 is actually 51.9mm making 51.64mm even closer to 90mm in medium format terms. you might ask. 35mm. Here are the possible ways to compare. On a Canon you multiply it by 1.6x to get 28.8-53.4 in its 35mm equivalent. The frame number for this format is printed at the bottom of the frame. A digital camera would have to be 156 megapixels to give you the same kind of detail as 35mm film. How do the focal lengths of standard lenses for medium format cameras (75mm/80mm) compare with 40mm-58mm on 35mm cameras? You can pick up a used camera for a few bucks, and they're so ubiquitous that some people just give them away. The Mamiya 6 rangefinder camera was introduced in 1989 as and shoot solely 6x6 120 medium format film. 4x5 6x12 . For those who have forgotten: to calculate the diagonal of a 35mm negative use the following formula. On 35mm, this angle equates to a lens of 27.27mm focal length so you can consider it similar to a 28mm lens on 35mm . And of course, this is just 35 mm; with medium and large format you get even more detail, and the larger you keep going the possibilities keep skyrocketing. Horizontal Angle Of View. 10x12. 1. count lines - should give us the absolute peak resolution of the film files. From that you can calculate other focal lengths. Regarding exposure, nothing changes; f/2.8 is f/2.8. Lets say the base is f8 (for the 35mm camera) what would be a similar aperture for 6x6 and 8x10? 2. compare results on screen - good for pixel peepers 3. compare prints and projected pictures - actually gives useful information for the photographer DX: 35mm normal lens, 2x = 70mm, 0.5x = 17mm 35mm/FF/FX: 50mm normal lens, 2x = 100mm, 0.5x = 25mm 6x6: 80mm normal lens, 2x = 160mm, 0.5x = 40mm 4x5: 150mm normal lens, 2x = 300mm, 0.5x = 75mm When I got my tele for the 6x6, I did not do an equivalent focal length. 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. Or where and how can I calculate DOF for medium format? frame is taller than the 35 mm format frame, yet less wide. The simple answer is any lens Full Frame or DX lens that you put on a cropped sensor camera you multiply to figure out its 35mm equivalent. The 35mm film gate size used was 24mm x 36mm. There are some cameras with a standard lens of 45mm – notably the Contax G series. (the square root of 24 squared + 36 squared). The 6x4.5 format is a little If I converted from 6x6 to 35mm, determined the 35mm tele, then back out to 6x6, I would go nuts. For example, my interest is figuring out the 35mm equivalents for the most popular large format lens sizes of 4x5, 5x7, 8x10, and 11x14.
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