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"Crop Factor" refers to the sensor size of a camera relative to a 35mm (Full-Frame).

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Why did Canon come up with APS-H and why did the top-of-the-line 1D's *still* use it and 1.3x crop, when FF existed for four years (the 5D)?

With the 1.5/1.6X (APS-C/DX) crop factors and full frame just about ubiquitous these days in the digital world -- why hadn't Canon's top-of-the-line 1D's moved to FF sooner? It took four years! Is ...
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7answers
2k views

Do I use the crop factor in calculating aperture size and area?

How do I calculate the aperture size and area, considering an 35mm equivalent focal length value and non-equivalent aperture f-number (in terms of exposure, no multiplication of the crop factor of the ...
0
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3answers
199 views

Why are crop lenses indicated with focal lengths they don't have [duplicate]

If we will use crop lenses only on crop bodies, why do we all crop lenses for example "10mm" when they are actually "16mm" (with a crop factor of 1.6 in this case)? Edit: I am familiar with the ...
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4answers
137 views

Can I increase 35mm-equivalent focal length with both the crop factor and an extender?

I have a Canon EOS 7D Mark II (1.6x crop factor), and I have a Canon EF 100-400 IS USM. Working with just 400mm for the purposes of this question, my understanding is that my 35mm-equivalent focal ...
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2answers
1k views

Does wide angle equivalent in crop sensor skew image?

I see many posts on both this forum and elsewhere the discuss the use of a wide angle on a crop sensor. For example, they discuss how at 14mm lens is 14mm on a 35mm film or full frame, but with a ...
40
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12answers
7k views

What is crop factor and how does it relate to focal length?

I'm reading that a 50mm lens is recommended as a first prime lens for DSLR owners as it's supposed to give a 'natural' perspective, but when used on (most) DSLRs, the view is cropped, as if you were ...
0
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4answers
196 views

Does an APS-C lens label itself with effective or true focal length? [duplicate]

I'm not sure if I've phrased this correctly, but I've just purchased two prime lenses: Nikkor 50mm f1.8/G (FX) Nikkor 35mm f1.8/G (DX) I know that the effective focal length of the 50mm FX lens ...
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1answer
118 views

Does the D7200's 1.3x image area setting crop a RAW file in-camera?

Apologies for the poor explanation, I'm a Pentax guy so not very familiar with Nikon gear, and have been asked if there is any way to fix this problem. My MIL has a Nikon D7200 which has had the ...
0
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2answers
91 views

35mm DX prime lense on dx crop sensor(nikon d3300) [duplicate]

I have Nikon D3300 DSLR. I'm confused with 35mm and 50mm prime lenses on FX and DX cameras. Somewhere I read that if a 35mm prime lens is used on a FX camera the focal length is equivalent to around ...
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6answers
7k views

Why do Full Frame lenses and crop body lenses exhibit the same crop factor when used on a crop body camera?

I have a Canon 7D, which has a crop factor of 1.6x. When using a Canon EF-S lens I get the focal length stated on the lens, when using a Canon EF lens I get the focal length times 1.6 when used on ...
26
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5answers
7k views

Does my crop sensor camera actually turn my lenses into a longer focal length?

So, I mount a 200mm lens on my Canon 450D. It effectively becomes a 320mm lens. Is this the equivalent of 320mm on a full frame camera? That is, from what I've figured out I get an equivalent field of ...
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4answers
177 views

How does “crop factor” relate to the area of a sensor compared to full frame?

What is meant when someone says that a 1/2.3 sensor has a crop factor of 6.22? How many times the area of a 1/2.3 sensor is a full-frame sensor? Please include plenty of details. Another ...
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2answers
84 views

Does 4.0-72mm on the lens when equivalent focal length is 24-432mm mean crop factor of 6×?

The Samsung WB250F has 4.0mm-72.0mm printed on its lens, and its 35mm equivalent focal length range is 24mm-432mm. Does that mean it has a 6x crop factor?
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5answers
5k views

Is an EF 50mm f/1.4 the same as 50mm with an EF-S lens on a Canon 550D?

I have a Canon 550D with the standard 18-55mm kit lens. The 550D has a 1.6× crop factor. My question is very simple but whenever I've asked before (Yahoo Answers) I always got overly-complicated ...
0
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2answers
148 views

50mm or 35mm lens for a DSLR with 1.6 crop factor? [duplicate]

I have a Canon 500D, with the original lens EF-S 18-55mm f/3.5-5.6 IS II. I would like to try a prime lens, but I don't know whether I should choose a 35mm or 50mm lens. I read that the 50mm was ...
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2answers
203 views

Crop Factor: Can a full-frame Nikon Camera be set to use a DX lens, with no crop-factor?

Having read this question, I understand that a full-frame Nikon FX camera will apply a crop to the camera sensor's field of view when using DX lenses (?) - Does a Nikon DX lens on a FX camera get ...
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2answers
233 views

How do you calculate the focal multiplier of a non-full frame camera?

I'm currently using a Sony RX100 Mark 3 camera and want to buy a Canon 6D + 24-105 F4 L lens from an online retailer, which is not in my country. (before continuing I'd like to state that there are ...
1
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0answers
74 views

When using an EF-S lens, do I need to multiply by the crop factor? [duplicate]

I do know the physical difference between EF-S and EF lenses, but what I don't know is if I have to multiply by the crop factor (1,6) or if this is already taken into account in design?
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9answers
35k views

50mm vs 85mm for portraits on a crop sensor?

I've read several times that a 50mm lens will make features like noses noticeably stand out compared to an 85mm lens. However, I'm never sure if the post/article is describing results on a full frame ...
0
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0answers
49 views

Crop factor on Crop lenses [duplicate]

Is there crop factor for crop lenses on a crop sensor camera? I have an a6000 and I really need to know if crop factor applies to my new 18-105 G Lens
59
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6answers
20k views

What is “angle of view” in photography?

I read on the Lens Buying Guide @ neocamera: Focal-length determines the angle-of-view seen through a lens for a given sensor-size. With a full-frame sensor a lens gives the same angle-of-view ...
0
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1answer
87 views

how to calculate “FocalLenIn35mmFilm” with limited metadata

Im creating an app that uses "FocalLenIn35mmFilm" to calculate feild of view(FOV). unfortunately not all photographs contain this property in their meta data, the Motorola Nexus 6 is an example. The ...
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0answers
23 views
0
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1answer
105 views

Comparing focal length [duplicate]

Hello I want to move from my compact camera to a dslr. I am fan of landscape photos so I want to buy an ultra-zoom lens. My camera supports 14x optical zoom. I know that for compact cameras it's just ...
0
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3answers
573 views

Equivalent focal length and aperture of 150mm medium format lens on a 35mm camera

I'm mounting a Hasselblad Sonnar C 150 mm f4 on a 35mm sensor (43mm diagonal) camera. What is the calculation to get the new angle of view and equivalent focal length? Does this also affect the ...
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1answer
63 views

Crop factor and low light

I'm confused on this, even after researching: Given 2 cameras- one full frame with 50mm lens, one Micro Four Thirds (2x crop factor) with 25mm lens, let's pretend the cameras are beside each other, ...
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2answers
135 views

Why does this article say that a 1.5× crop factor sensor is 43% smaller than a 35mm film cell?

From http://www.digitalbirdphotography.com/2.3.html In the case of full-frame sensors, the pixels are spread out over a relatively large sensor: roughly 36mm by 24mm. This just happens to be ...
0
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1answer
217 views

What full frame lens for my new FX camera would be nearest to 18-105mm on my old DX-format D7000?

I've just gone 'up' to a full frame camera, the D610. Now I have to buy all new lenses. Which would be the nearest to my old 18-105mm that I had on my cropped D7000?
4
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5answers
3k views

Does sensor size affect lens distortion?

There was recently a video posted about how different focal lengths affect portrait photography, specifically how distortion at smaller focal lengths have more distortion and are less flattering. So ...
19
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6answers
4k views

Can a smaller sensor's “crop factor” be used to calculate the exact increase in depth of field?

If APS-C and similar crop-sensor digital cameras have a focal length multiplying effect such that a 50mm lens has an apparent focal length closer to the field of view of an 80mm on a full frame ...
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4answers
186 views

Does the crop factor affect the field of view (FOV)? [duplicate]

I'm working on smartphone cameras. I want calculate Field Of View of different smartphone cameras using the formula : FOV = 2 arctan(SensorSize/2f) where: f is the focal length sensor size is the ...
2
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2answers
1k views

What are the effects of using a crop lens with a full frame sensor?

If I attach a crop lens (e.g., a Sony 50mm 1.8 OSS for Sony E-mount) on a full frame sensor (e.g., on a Sony A7), are there changes to the focal length, aperture, and F number? And will we have a ...
11
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3answers
5k views

Why don't comparisons of aperture take sensor size into account?

When one compares focal length, many times we use the 35mm equivalent length. A 50mm lens on an APS-C sensor camera(1.6x) would be a 80mm equiv. length on a full frame camera. But when we state the ...
7
votes
1answer
272 views

Should I use 0.976 as the Canon 5D mkII Crop Factor / Focal Length Multiplier?

When I import images from my Canon 5D mkII to Hugin I've noticed that it auto inserts the value of 0.976 as the Focal Length Multiplier. Should I change this to 1? The images meta-data read with ...
4
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2answers
314 views

Understanding Lenses Focal Length with Converters

I read about APS-C sensors EOS DSLRs, that if the focal length is 300mm and as the image ratio is 1.6 then the 300mm x1.6 = 480mm focal length. So if I add a 1.4x teleconverter to 300mm lens so I ...
7
votes
5answers
873 views

Does crop factor increase the minimum focus distance?

I currently have a Canon 100mm 2.8L mounted on a cropped sensor camera, which makes it 160mm equivalent. I have two questions. Since the equivalent focal length is 160mm, does that mean that the ...
0
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1answer
130 views

Difference in image capture area between full frame and medium frame

Is the view/capture area of image from any camera with same lens (say 50mm) change when going from a full frame to a medium frame type camera?
1
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0answers
214 views

Widest angle lens with Speedbooster and Blackmagic Cinema Camera [closed]

What is the widest angle and rectilinear (no fisheyes) lens usable with Speedbooster and Blackmagic Cinema Camera? For those not in the know, Speedbooster both reduces a crop factor and increases the ...
1
vote
1answer
563 views

How to calculate the focal length for old lenses (m42 or m39) mounted on Sony Nex? [duplicate]

As far as I know, it is necessary to multiply the focal length by the crop factor. My Sony Nex 5 has a crop factor = 1.5 For lens Helios 77M-4 1.8/50 focal length will 50 * 1.5 = 75 Is this true for ...
11
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2answers
590 views

Why are 35mm image sensors the standard?

I often hear about sensors being full frame (which I think means 35mm sized) and others being cropped (if they are less than that) such as APS-C sized sensors. My question is what is so special about ...
0
votes
1answer
151 views

What does “focal length multiplier” mean? [duplicate]

I have heard of something called a focal length multiplier, particularly in connection with the size of the image sensor in a camera. What I don't understand is what this is and why ans how it is ...
8
votes
5answers
1k views

Does crop factor still apply to a vintage film SLR lens?

My friend has a Tamron 24mm lens on his Nikon D5000 and he says that because of its age and the fact it is manual focus, it is still actually a 24mm on his crop sensored camera. Is this right? If so, ...
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2answers
187 views

Will old K-mount lenses have the same field of view on Pentax K01?

Will old K-mount lenses have the same field of view on Pentax K01? Or, will 50mm lens (made for 35mm film) function as a 75mm lens?
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3answers
342 views

What is the “crop factor?” [duplicate]

I need some help understanding crop factor. I do get that the actual focal length doesn't change, but as far as field of view and how the image turns out is where I'm getting stuck. Anything that I've ...
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vote
3answers
4k views

50mm lens=75mm on DX camera? [duplicate]

I'm looking for a 50mm lens for my nikon d3100 and I just came across an AF-S 50mm f/1.8G lens and it says in the description that if it's used on a DX camera, the angle of view is going to be 75mm. I ...
6
votes
3answers
886 views

Must I allow for crop factor in the viewfinder when shooting with a Nikon DX format camera?

Will a Nikon D5100 (dx format) viewfinder show me what the captured image will be, or do I need to allow for "crop" factor? Will that depend on/alter with using a DX lens or an FX lens? I don't have ...
12
votes
2answers
3k views

When I use FX lenses on a DX camera, does the focal length or minimum aperture change?

If I put a Nikkor 35mm f/2 FX lens on a DX camera, is it still 35mm f/2, or has the effective focal length or minimum aperture changed, because it is being used on a smaller format than what it was ...
15
votes
5answers
4k views

Can I use my APS-C kit lens as a reference for choosing between 50mm or 35mm prime lenses?

I'm looking at getting a second lens in addition to my Nikon D7000's kit lens. I want to know if it's possible to use my 18m-105mm kit lens to get an idea of the focal length for a 35mm lens vs. a 50 ...
11
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4answers
1k views

What does 'Equivalent to 1.6x the focal length of the lens' mean?

In the specifications of Canon 550D, about the lens the following is mentioned LENS Lens Mount EF/EF-S Focal Length Equivalent to 1.6x the focal length of the lens Now this is really ...
8
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2answers
3k views

Does a Nikon DX lens on a FX camera get subjected to the 1.5X crop factor?

My friend has a Nikon 35mm DX lens that I want to use on my FX camera. If I use his lens on my camera in DX mode, does the effective focal length of the lens become 35mm * 1.5 = 52.5mm, or does it ...