1 more time, how does a crop 24mm on a crop sensor compare to a full frame 24mm on a full frame?

Question

Is the frame exactly the same if taken from the same position?

I am asking again because people compared the same lens on different bodies.

I understand that a 24mm made for a full frame will have a crop factor on a crop sensor.

I'm thinking maybe Nikon doesn't make lenses specially made for their crop sensors and that's why some people were thrown off by the question?

Canons have two different lenses, ones made specifically for crop sensor cameras, and ones made for full frame cameras, which also fit on their crop sensor cameras, but lose field of view due to the crop factor.

So will a 24mm made for a crop sensor on a crop sensor camera show the same field of view as a 24mm made for a full frame on a full frame camera?

Would there be some differences?

Answer 1

All lenses are labeled as if they are mounted on a 35mm full frame camera.



Try this, draw a rectangle on a piece of paper. Then draw some stick figures, or a quick sketch of a mountain filling the rectangle. Think of the rectangle as a full frame sensor. Now draw a smaller rectangle inside the original which is about half the size. Whatever is inside the smaller rectangle is what a crop sensor will record. The projected image size (lens focal length) does not change, but the crop frame captures less, making it seem zoomed in when compared to the full frame.



Lenses made for crop frame cameras are not adjusted for focal length, they just have rear elements closer to the sensor, making them unusable on full frame cameras.

Answer 2

Aaaarrrgggghhh!!!!



So many things going on. Where to start?



Imagine this ( http://manila.coconuts.co/sites/manila.coconuts.co/files/field/image/duterte-time.jpg ) as an 8x10" picture. Let's say you have a second copy of that photo and imagine drawing a 5x7" rectangle at dead center then cutting out the "borders" leaving the center behind. Both photos as of the same person. The smaller one which will contain the mouth, chin, a hand and some letters will still be the same size as the original uncut version. Follow so far? The uncut version is full-frame while the smaller one that was cut-out is cropped. Crop simply means cut. You should see now that frames will be different when shot from the same place.



Now if both crop-sensor and full-frame have the same megapixel count, the above will still happen with just one exception. The cropped picture will be blown-up (enlarged) to fill the same size as the full-frame version. The mouth, the chin, hands and letters will all get bigger. The picture still remains cropped (cut) though.



Canon clearly labels its lenses with EF for full-frame and EF-S for crop-sensor. Nikon does the same with FX for full-frame and DX for crop-sensor. Nikon however doesn't use the FX label that much so if you don't see DX, it's FX.



You can use a full-frame lens on a crop-sensor body without problems but not otherwise. Most of the time, the protruding end of a crop-sensor lens will get in the way of the full-frame's reflex mirror that would lead to a very expensive repair job. If the full-frame camera does not have this problem, a crop-sensor lens attached to a full-frame camera will project an image that is smaller than the full-frame sensor producing a small image with a dark, large and ugly border. So no, field of view will be different. Some full-frame cameras are able to detect this and crop the picture automatically producing a smaller picture (cropped) as if taken by a crop-sensor camera albeit with a smaller size (fewer megapixels).

Answer 3

Simply put, place a 24mm lens on a crop sensor body and you have the equivalent of roughly 38mm.

If you want the same 24mm wide angle perspective on your crop sensor, you will approximately need a 16mm lens.



Some lenses are manufactured for crop sensor bodies and won't function on full frame. Using fullframe lenses on crop sensors isn't a problem.



For me, the full frame cameras win hands down, the only negative is body price.

Answer 4

Is the frame exactly the same if taken from the same position? Not exactly the same because the aspect ratio of 35mm and APS-C is different. Therefore using a 24mm lens on both will result in the image taken with an APS-C format camera having less angle of view.



I'm thinking maybe Nikon doesn't make lenses specially made for their crop sensors and that's why some people were thrown off by the question? No, this is incorrect. Nikon makes DX lenses for APS-H or DX bodies such as their D3xxx, D5xxx, and D7xxx series of cameras. This is the equivalent of Canon's EF and EF-S line up of lenses. But unlike Canon, you can put DX lenses on FX bodies.



Canons have two different lenses, ones made specifically for crop sensor cameras, and ones made for full frame cameras, which also fit on their crop sensor cameras, but lose field of view due to the crop factor.

Correct.



So will a 24mm made for a crop sensor on a crop sensor camera show the same field of view as a 24mm made for a full frame on a full frame camera? No, you will always have to use the crop factor of 1.5x on DX bodies. A lens of any given focal length is always of that focal length. Therefore putting a DX lens on an FX body will give you the same amount of distortion and compression of the perspective. It's just that when you put a DX lens onto an FX body, the sensor will be larger than the image circle projected onto it by the lens. So you will have to shoot the camera in a crop mode which produces the same angle of view had you used the lens on a DX body. Both way: DX lens on DX body or DX lens on FX body in crop mode will produce the same angle of view. in the final image.



Would there be some differences? Compared to what? A 20mm EF-S lens vs a 20mm lens on a FF camera body? Yes, because you still need to factor in the crop factor. The EF-S 10-22 lens, for example,on an APS-C body still produce the same angle of view as 16-35mm EF lens on a FF camera body.

Update: So basically, a Canon 24mm EF-S on their entry level DSLR vs a canon 24mm EF on their full frame camera.



Would the frame fill exactly the same amount? Would there be difference, such as maybe further objects looking tinier on the crop sensor than the full frame camera's? The elongation of the perspective affects the entire image, but the edges are affected most. So therefore, comparing a 10mm lens on an APS-C camera, the distant objects will look like smaller than the equivalent 16mm lens on a FF camera body. However, the differences are subtle at best, so it shouldn't be a major factor in determining which format to choose for your own work.

Answer 5

Throw out everything you think you know about this subject and start with a clean slate.



A 24 mm lens is a 24 mm lens no matter what camera body it is attached to. This is a specific specification that is attributed to the lens and has absolutely nothing to do with the camera body.



When an image from a 24mm lens is projected on a camera sensor, you can calculate what the field of view will be on that sensor.



When an image from a 24mm lens is projected on a full frame 35mm camera (Nikon FX sensor size is 35.9 x 24mm) the field of view is about 73.7°.



When an image from a 24mm lens is projected on a crop sensor camera (Nikon DX sensor size is 23.6 x 15.6mm) the horizontal field of view is about 52.4°.



As you can see, the crop sensor camera has a narrower field of view which looks like your image is magnified when compared to using a full-frame sensor.



Camera manufacturers have different lenses for their crop and full-frame sensors.

Lenses for crop bodies (DX for Nikon, EF-S for Canon) have a smaller area of illumination suitable for the smaller sensors in crop bodies. This lowers cost, size, and weight of the lens.

Lenses for full frame bodies (FX for Nikon, EF for Canon) have a wider area of illumination as compare to DX lenses. You'll find these lenses to be larger, heavier, and more expensive.



A crop body camera can accept either lenses built for crop or full frame.

Full frame bodies differ in which lens they accept.

Nikon full frame bodies can accept either DX or FX lenses, but if you use a DX lens on a full-frame body you'll get severe vignetting. Nikon can be put in a mode where the sensor will only take the center of the image effectively making your expensive camera look like a DX sensor.

Canon full frames can only accept EF lenses. If you use a EF-S lens on a Canon full-frame body, you'll damage the camera.

Answer 6

Using a Canon crop sensor lens (DX) on a full frame sensor (FF) camera would have about 1.6 of an image on the FF camera sensor; it would NOT fill the entire "frame" of the image on the FF camera memory. The DX lens is manufactured to fill the smaller area of the DX camera sensor.



Likewise, if you use an FF lens on a crop sensor camera, you'd find that the 1.6 of the image (specifically the border area) will be cropped out because it is manufactured to fill the larger area of a FF sensor. I hope I've helped.



Some more expensive modern FF cameras allow the operator of the camera to use a switch that allows use of a DX lens. You'd have to read your camera's Instructions Manual to determine if your camera model has this feature/option.

Answer 7

Ok, lets go back to the beginning.



On different sized sensors the same lens (in this case 24mm) will show different angles of view. Get that fact strongly into your head.



On crop-frame 24mm will give you "slightly wide-angle". On full-frame 24mm will give you "very wide-angle".



As exact equivalent, a 24mm on crop-frame will show the same angle of view as a 36mm would show on full-frame. If you wanted a "very wide" on crop-frame you would need 16mm, to show the equivalent angle of view to 24mm on full-frame. Anything wider than 16mm on crop-frame or 24mm on full-frame might be called "extremely wide-angle".



Let's hope that helps to sort your ideas.



I do not know those two Canon lenses but I assume that Canon builds into its full-frame body software a setting which turns that full-frame sensor into a crop-frame sensor if you use lenses which are made only for crop-frame. If that is correct, then you get a view equivalent to 36mm on full-frame if the sensor is restricted to crop-frame and you use a 24mm crop-frame lens. Also, of course, you get fewer megapixels if only the crop-frame portion of the sensor is used.



Note that compact and "bridge" cameras have their angles of view quoted always as "equivalent" to full-frame cameras, thus the lens on a compact, which might start at 4mm and end at 80mm is a 20x zoom, with equivalence to approximately 28mm to 560mm.

Answer 8

Simply: 24mm full frame lens on full frame camera will have wider angle of view i.e. more things will fit in