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Questions tagged [crop-factor]

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

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88 votes
6 answers
46k 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 ...
kacalapy's user avatar
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47 votes
11 answers
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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 ...
Mark's user avatar
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40 votes
7 answers
23k 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 ...
Mike's user avatar
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25 votes
9 answers
7k 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 camera,...
Sean's user avatar
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12 votes
6 answers
12k 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 ...
Dennis G's user avatar
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4 votes
2 answers
4k 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 1....
user-2147482637's user avatar
9 votes
6 answers
3k views

How does crop factor affect perspective?

I have a question about crop factor and how it affects the perspective. Suppose you have one Super 35 camera and one APS-C camera. As far as I understand, to photograph the same image on the APS-C ...
petehallw's user avatar
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9 votes
5 answers
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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 ...
Ozzy's user avatar
  • 193
6 votes
3 answers
5k views

Is the kit lens focal length specified for APS-C or FF?

I have the 18-55mm kit lens for my Canon 50D and was wondering if they're still specified against full frame 1:1 crop? Would my 18mm actually be 1.6x? I ask because I doubt anyone with a full frame ...
Nick Bedford's user avatar
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44 votes
6 answers
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Is crop-factor a bad thing?

It seems to me that there is a preference for full-frame sensors rather than cropped sensors, and I'm curious as to why. It seems to me, that the cropped sensor means that I get more bang for my buck ...
Rabbi David's user avatar
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10 votes
3 answers
3k views

Does the shutter speed and focal length rule of thumb apply to cropped sensor cameras?

So, the rule of thumb for shutter speed is that it shouldn't be less than 1 / focal length. Well, that's straight forward on full frame cameras, but what about cropped sensor cameras? Is it going to ...
K'''s user avatar
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10 votes
2 answers
4k 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 ...
Daniel T.'s user avatar
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10 votes
5 answers
5k 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, ...
Jeremy Moulton's user avatar
6 votes
7 answers
24k 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 ...
Liron Harel's user avatar
12 votes
3 answers
9k 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 ...
dpollitt's user avatar
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16 votes
5 answers
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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 ...
kacalapy's user avatar
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3 votes
4 answers
11k 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 is ...
armadadrive's user avatar
12 votes
14 answers
90k 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 ...
huzzah's user avatar
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13 votes
2 answers
4k 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 ...
PaulH's user avatar
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12 votes
1 answer
9k views

What are the different sensor sizes used in DSLRs?

What do the different sensor size names used by Canon mean? There's APS-C, APS-H and full format? What are the standards used by Nikon, Pentax, Sony, Olympus, Panasonic, and others? What are the ...
intoTHEwild's user avatar
5 votes
1 answer
4k views

What is the crop factor for Four Thirds cameras considering aspect ratios?

I'm considering switching to the Micro Four Thirds system. Finding lenses which match my style is a key part of that, and "normalizing" via crop factor is a convenient tool. The crop factor for Four ...
mattdm's user avatar
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1 vote
3 answers
760 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 ...
Dani's user avatar
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1 vote
2 answers
225 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?
user152435's user avatar
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11 votes
4 answers
2k 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 ...
Lazer's user avatar
  • 4,049
0 votes
2 answers
157 views

Can I emulate a fullframe sensor with angular lens? [duplicate]

If I'd use a 30mm lens on a crop sensor, would it be like a fullframesensor with a 50mm on it? 30*1.6=48~50
Tiago Gonçalves's user avatar
0 votes
2 answers
474 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 call crop lenses for example "10mm" when they are effectively "16mm" (with a crop factor of 1.6 in this case)? I am familiar with the history ...
Ludo's user avatar
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5 votes
3 answers
714 views

How can I get the same image with the same 50mm lens on both FF and APS-C?

First things first, I'm talking ONLY about framing here. No light sensitivity, no bokeh quality, no pixel quantity, etc. A 50mm in a FF camera will give a certain composition and framing. How can I ...
Andres's user avatar
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2 votes
3 answers
2k views

EF-S lens focal length [duplicate]

Possible Duplicate: Does my crop sensor camera actually turn my lenses into a longer focal length? If I have an EF-S lens with a focal length of 10mm on an APS-C camera (i.e. with sensor crop ...
Viv's user avatar
  • 3,728
2 votes
2 answers
6k 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 ...
Julia Metran's user avatar
2 votes
1 answer
1k views

What does "angle of view equivalent to that of some lens in 35mm format" mean?

Does "angle of view equivalent to that of 22.5-585 mm lens in 35mm [135] format" for a digital camera mean that the lens is equivalent to a 22.5-585 mm lens for a DSLR camera?
Jack's user avatar
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1 vote
4 answers
799 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 ...
user152435's user avatar
  • 1,515
0 votes
2 answers
3k 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 ...
gaganyaan's user avatar
  • 599
12 votes
3 answers
4k views

Does a camera's crop factor apply to the magnification of macro shots?

If I have a lenses (or in my case extension tubes) that would allow the lens to magnify 1:1, does a 1.5x crop factor body make it really 1.5:1 ?
rfusca's user avatar
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11 votes
2 answers
2k 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 ...
Sachin Kainth's user avatar
3 votes
3 answers
2k views

Confused about T-stop number. Does it account for crop factor?

I understand that a T/stop number deals with how much light is let in, instead of the sensor size vs. aperture like the f/stop number. However, what I haven't found is whether or not that T/stop ...
Tyler VanDenBerg's user avatar
3 votes
2 answers
578 views

Canon APS-C: what is the maximum sensor size EF-S lenses are designed to support?

Given that Canon APS-C cameras differ in sensor size (e.g. 70D has a 22,5 x 15,0 mm and 700D has 22,3 x 14,9) is it possible for future models to switch from a 1,6 to 1,5 factor like Nikon crop ...
user2720372's user avatar
1 vote
4 answers
942 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 ...
Lavender's user avatar
  • 147
1 vote
2 answers
223 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 ...
Tim's user avatar
  • 253
0 votes
2 answers
4k 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 ...
Dan P.'s user avatar
  • 31
0 votes
1 answer
863 views

Clarification for Effect of Pixel Size on Depth of Field [duplicate]

From Wikipedia's depth of field article, $$\mathrm{DOF} \approx {2u^2NC \over f^2} $$ for a given circle of confusion (\$C\$), focal length (\$f\$), F-number (\$N\$), and distance to subject (\$u\$). ...
Dong Dong's user avatar
0 votes
2 answers
634 views

Why don't my calculations based on a crop factor of 1.5 work for the Nikon P1000?

I know that Nikon cameras APS-C sensors has a crop factor of 1.5 but if we apply this to calculate the equivalent focal lenght in 35mm format for the Nikon P1000 camera we will not get the exact ...
P. Kod's user avatar
  • 11
0 votes
2 answers
794 views

Can a focal reducer be used with a teleconverter?

Can you use a focal reducer with a teleconverter? I don't believe it would be possible to do it but, is it? If I were to use a full-frame 50mm lens on a 2x teleconverter with a 0.71x focal reducer ...
Joe Scotto's user avatar
-3 votes
2 answers
473 views

Why don't lens manufacters just label their lenses in 35mm equivalent terms? [duplicate]

I recently read a question asking if a 35mm DX lens on a APS-C body would produce a 35mm picture. There was a good bit of discussion / corrections regarding the crop factor vs field of view ...
Swug's user avatar
  • 1