A 150 mm lens is a 150 mm lens is a 150 mm lens. The 4x5 image plane is 161 mm diagonal, while the full frame 35mm is only about 43 mm diagonal, making an effective "crop factor" of about 4x. 4X5 LF sensor none, MF: 6X9cm none, 6X7cm none, 6X4,5cm -1 made, used in Phase One, Hasselblad $50,000.00 / body. Rick, I use a 4x5 standard and focusing panel to shoot 6x12, have reluctantly decided to park my 2x3 gear and use my 6x12 rig for that format with, of course, a 2x3 roll holder that fits it. Focal length is focal length is focal length. If the image is very large and the desired size is comparatively small then Photoshop will downsize the image and in the process resample the image. The above image is with an "8 inch" (210 mm) lens, which is about a normal focal length for 4x5, but would be considered telephoto for 35mm. Magnification goes up, … the other deals with crop factor, another overlooked fact in comparing digital lenses to analogue. In Photoshop, you can use the Crop tool and choose the appropriate aspect ratio from the menu on the top left. Crop Factor is the ratio of the two sensor sizes, ratio equal to larger/smaller. For example, a 6×6 camera has a crop factor of .55. In the same way that larger medium roll film and 4x5 inch sheet film were an advantage offering image quality, the larger Full Frame digital sensor is also considered an advantage for image quality, but costing greater size, weight and price. Crop Factor is the numerical degree in this concept of a smaller sensor cropping the image and field of view smaller. The factor only differs in respect to the original film format ratio. Did you see there is a 4x5 sensor coming? Just open a new document and plug in the aspect ratio you want to scale. We don't even think in terms of crop factors. Quick Reference – Standard Camera Sensor Crop Factors: Things have changed in my short "career" as a bird photographer, maybe 10 years total. So, f/11 on 4x5 would be the same depth as about f/2.8 on 35mm. Shop our 4x5 field and view cameras to enjoy the unparalleled ability to control composition and perspective. 2x3 (or 4x6) is a good starting point for standard dSLR files to find sizes you can print at without cropping. The 80mm of the classic 6x6 should give the exact same angle of view (and crop factor in regard to the digital back´s sensor size) as does the 80mm lens of the 645 system. Now you may notice that this is actually not so easy for Micro-Four-Thirds because the image ratio is different (4:3 vs 3:2). The 6 x 9 format frame is 56mm x 84mm. Simplistically the crop factor is just the ratio between the sensor width (or height) of a system relative to the full format (e.g. You finally had somewhere to post all your full landscape crop photos in all their glory. A full frame camera would have a Crop Factor of 1, 43.3mm/43.3mm. 1. It should go without saying that you can scale up or down any print ratio. Crop Factor is about the cropped Field of View due to the smaller sensor size. Smaller camera sensors such as a standard 22.3mm width, APS-C Sensor ( see graphic above ), would have a crop factor of approximately 1.6. Crop Factor is Not even about the lens. Film it is. 300 mm is the normal focal length for 8x10. So, if you multiply an 80mm lens by .55, you’ll get 44mm. The one on the left represents an 8x10 crop of an image with a 4:3 aspect ratio. One of T Northrup's videos states that the crop factor must also apply to the f-stop of the DX lens, so he states that a Nikon DX 50mm f/1.8 is actually equivalent to an FX 75mm f/2.7 on a full frame camera. Isn´t that a bit misleading to distinguish different crop factors for medium format systems. Camera Crop Factor = 43.3 / Camera Sensor Diagonal Distance. Crop factor. Ever think about using a fantastic Large Format 4x5 camera with a Canon EOS (EF/EF-S) mount D/SLR camera? Given the ‘I crop to 5x4 ratio’ condition, a 24-70 lens is actually from 100mm to 300mm. Drag the cropping tool over your image to see the different possible crops. lens conversion factor. Crop Factor. So, what's the point? Select "Tools" again, then "Crop Guide Overlay" and then "Aspect Ratios." My question. 36mm / 24mm = 1.5x for APS-C). Log-log graphs of focal length vs crop factor vs diagonal, horizontal and vertical angles of view for film or sensors of 3:2 and 4:3 aspect ratios by CMG Lee. I curse the mirror box shadowing, but hopefully I can get a grid of at least four clean frames. 6 x 9 Crop Factor = 0.43. More generally, a crop factor can be applied to the focal length of a lens for one imaging area (or format) ... 4x5 /1.0 /0.6 /0.55 /0.5 /0.45 /0.4 Jun 14, 2006 #1. jimaroo TPF Noob! By contrast, for an adult headshot in 4x5 you're going to be at probably at 1:5 or so, and in 8x10 you're going to be near life size. 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