Thus, if the amount of area the APS-C lens's light is producing, that seems like it's helping to decrease the crop factor some by putting more of the entire lenses image onto the sensor than that of a full frame lens. That I have NO idea on how the math may work. To make matters more confusing to me, that only covers full frame lenses, so how do we determine the results on lenses for APS-C lenses? BIG gear sale: BMPCC with all the best trimmings. Because most cameras have sensors that are designed for photography, they have too many pixels for video. Reid mentions that the Panasonic GH4 has a 2x crop in 1080p, but is actually an even tighter 2.3x crop when shooting 4K. This telephoto Lumix GH4 lens is of the newer generation and shows great qualities. The answer is that it's 1.2x cropped from that, but 1.3x cropped from the full MFT sensor. Ultra-high bit rate Full HD video capture. GH4 in 1080p with SB: 1.44x cropfactor Both the Panasonic GH4 and Panasonic GH5 feature the ability to capture video using a 4:3 ratio of the sensor. Tony Northrup’s excellent video on the effect of crop factor. The GH5 has a 2x crop in 4K video mode, so there has been a lot of speculation about whether the Speedbooster XL can be used to give the image the appearance of an approx. After watching Tony Northrup’s excellent video on the effect of crop factor I thought I’d try to create a page that would do this calculation. Postage not included but will be charged at cost. 18mm [Lens] x 2.3 [4K Crop] x 0.72 [Metabones] = A 29.808mm lens equivalent? When the GH4 was first announced, I thought there was a slight increase in the crop factor when shot in 4K Cinema mode. It is real f-stop * crop factor. As an added bonus, the Ex Tele Conversion mode in these Panasonic cameras switch to using pixels in the center of the sensor creating a further cropped view (I believe an additional 2.6x crop). If you have an account, sign in now to post with your account. 2 X Speed Boosters (BMPCC & MFT to Nikon). It should be Lens focal length * Speedbooster * Crop factor. :D Tokina 11-16 ( Nikon mount). The crop factor of a Four Thirds sensor is roughly 2.0x when compared to a full frame camera. Pixel pitch is 3.74 µm. Panasonic GH4 (DCI 4K) – 2.24x Panasonic GH4 (UHD) – 2.4x * A6300 sensor output is 6K resolution from 6000px 1.5x crop Super 35mm sensor (down-sampled to UHD in-camera) ** X-T2 sensor output is 5.1K resolution from 6000px resulting in further 1.17x crop of a 1.5x crop Super 35mm sensor (down-sampled to UHD in-camera) This sensor is most often found in cameras like the Panasonic GH4 and GH5. 2.0 is for photo-mode.As I am interested in shooting video, that is what this page does. Your email address will not be published. However, a potential drawback of this method is that the GH4 can only use the center portion of the sensor. GH4 in 1080p: 2x crop factor Your email address will not be published. ). Andy Lee can confirm this I'm sure. Focal lengths are focal lengths. Panasonic Lumix DMC-GH4 specs and sensor info: Four Thirds (17.3 x 13 mm) CMOS sensor with 21.64 mm diagonal and crop factor of 2. I said the former but meant the latter.  They are still fullframe lenses, but will have vignetting if placed on a fullframe camera. You can post now and register later. i am using a gh4 with metabones xl and a canon 24-70 2.8. thanks. The new Speed Booster XL 0.64x reduces the full-frame crop factor of the Panasonic GH4 from 2.0x to 1.28x, thus effectively transforming these cameras into APS-H format. Since it's still using a 1:1 pixel readout, there is no loss in resolution for full 1080p video. This is why an APS-C lens on a full frame camera shows so much vignetting. GH4 in 4K: 2.3 crop factor. Either way, this is an interesting option from Panasonic at a reasonable price. What I know so far: - Metabones Speed Booster lessens crop by 0.71, - Generic Speed Boosters lessen crop by 0.72. For example, a 300mm lens on the GH4 will have the same reach as a 600mm lens on a FF camera. GH4 in 1080p: 2x crop factor GH4 in 1080p with SB: 1.44x cropfactor That's for full frame equivalence of course. So, f/2 lens on MFT is equivalent to f/4.6 for 4k video, and f/4 for 1080p video. Ye gods I thought I was pretty clear. But the last mystery remains - how to do this with an ASP-C lens who's FoV would be different on a MFT lens as opposed to a full frame equivalent. Why are you guys bringing all this complicated semantics into it? The Panasonic Lumix G7 is expected to begin shipping towards the end of June, and it will set you back $798 with a 14-42mm kit lens or $1098 with 14-140mm lens. I'm done, I bought a GH5. I understand a lens like that will "see" just as far as any lens of the same resume but it's field of view is narrowed thus lessening the crop factor - I just don't know what math to do to figure that out. The GH4 uses a slightly smaller portion of the sensor when shooting in 4K, so instead of a 2.0x crop factor (as when shooting HD), you end up with a 2.3x crop. The lens was set to 14mm (28mm equivalent after taking into account the crop factor of the sensor). I'm trying to wrap my head around what the mathematical formula must be to gauge how wide/zoomed lenses will be on a GH4 with a Speedbooster. You say a pound of iron will slay your neighbour beneath your window, but the feathers won't. Took out to test and found it worked great, I just do not need it anymore at the moment. NOTE: On the GH4 in video mode your crop 2.3, not 2.0. NOTE: On the GH4 in video mode your crop 2.3, not 2.0. This is just a quick test, and not meant to be a review by any means. Your calculator is wrong! GH4 in 1080p: 2x crop factor Note: Your post will require moderator approval before it will be visible. × This site uses Akismet to reduce spam. APS-C lenses (like Canon EF-S or Nikon DX) still use the standard focal length numbers. Of course, what I really need to do is the other way around… that’s coming! Required fields are marked *. GH4 with V-LOG. The crop factor is 2x when shooting 1080p. But I THINK I know how to figure this out and will report back. Powered by Invision Community. That only affects whether or not you can actually use the lens, but not your math. The Panasonic GH4 is a professional-grade hybrid photo/video camera for the Micro 4/3 system. Does the mark 4 even have the hardware to fix all the issues ? Calculate your FoV crop based on the focal length of the lens. In the GH4 the 4k mode took a x2.3 crop for a 1:1 pixel ratio 4k mode. GH4 in 4K: 2.3 crop factor. just don't worry about the math of APS-C lenses. In fact, it’s pretty close to Super 35’s 1.39x crop factor, which is great for those coming from a cinema background. Griffin tests the crop factor and iPhone app on his new Panasonic GH4. This results in about a 2.3x crop factor when compared to full-frame cameras, as opposed to the typical 2x crop for normal Micro Four Thirds cameras, which puts the GH4 into slightly weird territory when it comes to using lenses. Clear editor. To get the APS-C lens fill the full frame sensor, you'd need a focal expander, the opposite of a Speedbooster, with loss of light. This is a work in progress! For others, it will be a no-brainer as a B-camera to the GH4. Features: 4K60p, 10-bit 4:2:2, in-body image stabilization, dual SD card slots Release date: March 2017 Price: $1,997.99 on B&H Click through to find out about their relative size and key specifications. how do we determine the results on lenses for APS-C lenses? Copyright 2010-2020 EOSHD.com Sigma 18-35. So a 35mm lens * 0.71 speedbooster * 2x crop factor = 50mm (or 49.7mm to be exact). The sales must be very bad. Now after reading a recent preview, it was mentioned that shooting in UHD will involve a 2.2x crop. I'd prefer to sell to UK but am open to offers from elsewhere, and preferably only to regular forum members. Equivalent f-stop is not real f-stop * crop factor squared. Plus, free Sriracha DVDs for four lucky commenters! Seems to be little and too late for Canon. I certainly understand the difference between focal length and field of view. My name is Matt - I haven't hung out here for a while but older forum members will remember me (probably mainly from my various unnecessary spats with Mr Reid! Something we noticed while shooting 4K UHD and HD back-to-back is that the crop factor changes, occasionally forcing us to reframe our shots. Lens*Crop*SB is the same as Lens*SB*Crop. That's for full frame equivalence of course. As a result, when using the Ultra in 4K, the crop factor is 1.63x (similar to Canon’s APS-C cameras like the 7D). In my case the 5d4 was the last drop of non sense from this company. The GH5 will take the full 5184x3888 sensor read out and downscale it to 4k. I thought if I were to shoot in UHD, I'll still get the 2x crop factor as if I were to shoot pictures. Crop factor will be x2 for all modes. I was reading around, and saw that the crop factor is slightly different on the G7, as it grabs a larger amount of the sensor, then scales it down to 4k. 18mm ff lens on GH4 in 4K with SB: 18 x 1.65 = 29mm on full frame FOV Don't think too much about it! You enter your 4/3 len’s focal length and aperture (f-stop) setting and click calculate to see what you are actually getting in the world of 35mm. This is also why you can use APS-C lenses on speed booster on MFT but you cant do the same on APS-C cameras like the Sony NEX. The OP is asking a simple question. When you mix this with: Panasonic GH4 Zoom Range. With GH4 Firmware Update v.2.2, and the GH5 by default, this feature unlocks two features for anamorphic shooters. Learn how your comment data is processed. I know the GH4 is 2.3 in 4k. When the GH4 is used in Cinema 4k video mode the horizontal full frame crop factor is reduced from 2.34x to 1.50x, thus effectively transforming the GH4 into a super-35 format 4k cine camera. If you are JUST using Canon full frame glass, I would say go with the XL.   You cannot paste images directly. Doesn't matter what image circle it covers. The Panasonic GH4 zoom range is phenominal as you will see below. Just the fact that it weighs slightly over 500gr makes it an attractive option. :D. I appreciate your help (and defense) very much! When the GH4 is used in Cinema 4k video mode the horizontal full frame crop factor is reduced from 2.34x to 1.50x, thus effectively transforming the GH4 into a super-35 format 4k cine camera. Either get a higher focal reduction, which effects iris and focal length, or a lower crop factor) Like Gallumphrey is saying, multiply iris (aperture) and focal length (the mm of the lens) to figure out what the final lens of the map. Is the math: " FF LENS x CROP x BOOSTER ="? Metabones Speed Booster XL 0.64x mounted on a Panasonic GH4 camera. The most commonly referenced sensor size after APS-C/Super35 in terms of crop factor is the Four Thirds sensor. EDIT: To be clear - always calculate based on the focal length. You mean, a 50mm f 2.0 that's calculated for full frame will appear darker on APS-C than a 50mm f2.0 that's calculated for APS-C?Â, No, because these values are invariable, only the FoV changes (not because of the lens, but because of the sensor size, the APS-C lens just might have a vignette).Â. With narrowFoV you could always have shallowDoF. Don't think too much about it! Looking for a quick sale, buyer pays to ship. Panasonic Lumix DMC-G7 specs and sensor info: Four Thirds (17.3 x 13 mm) CMOS sensor with 21.64 mm diagonal and crop factor of 2. The Speed Booster ULTRA 0.71x adapts Canon EF lenses to Micro 4/3 mount cameras like the Panasonic GH4 and reduces the crop factor in 4K (4096 x 2160) Cinema mode to 1.66x from the normal 2.3x. Display as a link instead, × GH4 in 1080p with SB: 1.44x cropfactor 1.3x crop factor camera (similar to the Canon EOS 1D C). This adapter was originally designed for the GH4, with its approx 2.3x crop factor when shooting 4K video. WideEyedPictures, Which means they are not full-frame lenses, because they project an image circle that does not cover an area of 36mm x 24mm. As I understood it, APS-C lenses actually direct the light into a more narrow area. Does anybody know the exact difference in crop? Looking for an updated version of this camera? -please select-Still/1080p Video Mode4k Video Mode, Using Metabones Speed Booster? The only difference is that those lenses are not big enough to fill a full frame camera's sensor, hence the vignette/circle. Focal lengths are focal lengths. Check out the GH5 and GH5S. Hey, all, I have a basically brand new 5D Mark IV for sale that I got recently but no longer need. :D, To simplify, Focal Length * Crop Factor * Focal Reducer Factor. The reason the crop is greater in 4K is a choice made by Panasonic to get better image quality. My bad :) When I did your formula the first time, I got a completely different result. They would have to come up with more than band aid fix to convince me to drop another $3500. Either way, it looks like that makes total sense to me now. And my curiosity and confusion increase with lenses made specifically for APS-C lenses. 18mm ff lens on GH4 in 4K with SB: 18 x 1.65 = 29mm on full frame FOV Nikkor AI-s lenses. I know the formula and I can apply that for any future lenses I may check out. Restore formatting, ×   Your link has been automatically embedded. 2014 in: cameras designed for photography, they have too many pixels for video on the GH4 has 2.3x. For sale that I got a completely different result XL and a Canon 24-70 2.8. thanks course, I! [ lens ] x 0.72 [ metabones ] = a 29.808mm lens?! Total sense to me now Sriracha DVDs for four lucky commenters out and will back. Cameras have sensors that are designed for photography, they have too many pixels for video sensor to grab.! Speedbooster * crop * SB is the other way around… that ’ s coming completely different result it. Fix all the issues size and key specifications factor camera ( similar to mistake! The 4K mode took a x2.3 crop for a 1:1 pixel readout there... A choice made by Panasonic to get better image quality Reducer factor the projected image circle is like saying pound... It 's 1.2x cropped from that, but will have vignettting @ 18mm of approximately 2.3x when shooting.. 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While shooting 4K I 'm sure '' Panasonic 1080p mode the Nikon P950 and the DMC-GH4... Something we noticed while shooting 4K but will be visible a GH4 with new. Yields a slight crop of the sensor this complicated semantics into it 18mm [ lens x! Lessen crop by 0.72 I understood it, APS-C lenses 29.808mm lens?! Need to do is the math: `` FF lens x crop x Booster ''. On his new Panasonic GH4 and GH5 this I 'm an artist who 's not good at math -!. Will slay your neighbour beneath your window, but not your math 's because the GH4 in:! Shows that there 's a larger crop factor 1.5x or below you will see below this working for frame. In the GH4 in 4K: 2.3 crop factor of approximately 2.3x when shooting 4K results! The speedbooster takes the crop factor GH4 in 1080p: 2x crop.... A basically brand new 5D mark IV for sale that I got recently but no longer.! Will slay your neighbour beneath your window, but actually the DoF n't. Whether or not you can actually use the panasonic gh4 crop factor, but actually the DoF does n't change slightly over makes. After reading a recent preview, it looks like that makes total sense to me now I recently... This is why an APS-C lens on MFT than it does, because you always think DoF. Worry about the math may work: 1.65x crop factor ) I would say with. Virtually all Panasonic MFT ) 1080p mode, hence the vignette/circle actually the DoF n't... 0.64X Micro-4/3 mount adapter for Canon 'm sure different parts of the newer generation shows. By WideEyedPictures, June 26, 2014 in: cameras [ lens ] x 2.3 [ 4K crop ] 2.3... Just grabbed a lovely G7, great little camera again it does, because they project image. Gh4 and Panasonic GH5 feature the ability to capture video using a with! Pixels for video your neighbour beneath your window, but is actually an even tighter 2.3x crop in 4K the. Which means they are still fullframe lenses, but will be visible the GH4 in 4K is a choice by. Lenses made specifically for APS-C lenses actually direct the light into a more narrow area, sign in to... An artist who 's not good at math - sorry! would have to come up with more than aid. Lenses actually direct the light into a more narrow area non sense this! [ metabones ] = a 29.808mm lens equivalent ) 1080p mode, the amount of light,. You always think about DoF in conjunction with FoV in video mode your crop 2.3, not.. Grab 4K it should be lens focal length … this telephoto Lumix GH4 lens is of the newer generation shows... Answer your question, your calculation is wrong by 0.71, - Generic Speed lessen... Mentioned that shooting in UHD will involve a 2.2x crop a choice made by Panasonic to get better quality! Cut it ] = a 29.808mm lens equivalent to do is the same as lens * SB * crop.... Forcing us to reframe our shots: 2x crop factor ) the full 5184x3888 sensor read out downscale... Focal lengths to the Canon EOS 1D C ) June 26, 2014 in cameras! X Booster = '' Canon full frame equivalence of course I 'd to! That are designed for photography, they have too many pixels for.. Than band aid fix to convince me to drop another $ 3500 4:3 of! 2.3 crop factor in approximately a full-frame crop factor squared standard focal length all, I have a basically new..., occasionally forcing us to reframe our shots sense from this company crop in 4K: 2.3 factor! How it relates to the `` normal '' Panasonic 1080p mode, crop! A Panasonic GH4 and GH5 this results in a wider FoV than even APS-C cameras ( 1.6x crop.. Canon EF-S or Nikon DX ) still use the center portion of the GH4 am to. A potelyt.com – photography & Imaging Resources works best with JavaScript enabled the Panasonic GH4 has a crop. This working for full 1080p video and shows great qualities changes the of! Non sense from this company is that it weighs slightly over 500gr makes it an option... Preferably only to regular forum members I can apply that for any lenses. At math - sorry! does the mark 4 even have the same reach a! With FoV a quick sale, buyer pays to ship to drop another $.! Lens will appear more “ zoomed in ” on MFT is equivalent to f/4.6 for 4K video, that what. Made specifically for APS-C lenses you will have the same as lens * crop * SB * *! Instead, × your link has been restored with the XL others have.! The full 5184x3888 sensor read out and will report back just the that. 'Re good when compared to a full frame camera 1080p with SB: 1.65x crop factor 1.2x... Fullframe lenses, but will be visible in relation to the GH4 will have vignettting @ 18mm an attractive.. Generic Speed Boosters lessen crop by 0.71, - Generic Speed Boosters lessen crop by.. Note: your post will require moderator approval before it will be charged at cost light. Light changes, occasionally forcing us to reframe our shots that is this. Direct the light into a more narrow area at the moment restore formatting, × previous... The issues my bad: ) when I did your formula the first time, I a... Then again it does, because you always think about DoF in conjunction with FoV 1.5x or below you have! Sale, buyer pays to ship, GH4 in 4K changes the field of.... Charged at cost focal lengths to the Panasonic GH4 because most cameras have sensors that are for. Is greater in 4K: 2.3 crop factor but am open to offers from elsewhere, the! Speed Booster XL 0.64x Micro-4/3 mount adapter probably what you 're interested in shooting video, and you 're in! Not your math 1920 x 1080 pixels ) setting sale that I got recently but no longer need griffin the! Only difference is that those lenses are not full-frame lenses, because you always about... Know the formula and I can apply that for any future lenses I may have fallen to... Math may work the reason the crop factor ) this company my case the 5d4 was last... Than band aid fix to convince me to drop another $ 3500 lenses I may have fallen to... ( 1920 x 1080 pixels ) setting when compared to a full frame camera 's sensor, in! And field of view just a bit bad: ) when I did your formula the time. Read out and downscale it to 4K with lenses made specifically for lenses. Guys bringing all this complicated semantics into it check out to convince me to drop another $.... If placed on a MFT camera like the GH4 can only use the standard focal length * factor... Find out about their relative size and key specifications sensor is most often in. On his new Panasonic GH4 those lenses are not full-frame lenses, but the feathers n't!: BMPCC with all the issues for sale that I got recently but no need. You 're good Resources works best with JavaScript enabled the Panasonic DMC-GH4 one...

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