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

learn more… | top users | synonyms

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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 ...
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2answers
110 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 ...
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1answer
93 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?
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0answers
90 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 ...
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1answer
183 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 ...
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2answers
502 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 ...
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2answers
432 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 ...
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1answer
124 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 ...
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2answers
125 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
147 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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5answers
2k views

Why do Canon EF and EF-S lenses exhibit the same crop factor?

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 ...
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5answers
571 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 ...
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3answers
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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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3answers
539 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 ...
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5answers
732 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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4answers
1k 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 ...
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6answers
18k 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 ...
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1answer
1k 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 ...
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2answers
4k 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 ...
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1answer
842 views

Crop Sensor Enhances Zoom? [duplicate]

Possible Duplicate: What is the difference between focal length and crop factor? Does my crop sensor camera actually turn my lenses into a longer focal length? I keep reading about how ...
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3answers
1k 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 ...
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1answer
758 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?
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2answers
206 views

Are film lenses effectively longer focal lengths on cropped-sensor DSLRs? [duplicate]

Possible Duplicate: Does my crop sensor camera actually turn my lenses into a longer focal length? My wife has a pair of Tokina lens (28-80mm and 100-300mm, I believe, without the lens here ...
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3answers
1k 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 ...
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2answers
2k views

DX 35mm vs FX 50mm

Will the picture taken from AF-S DX NIKKOR 35mm f/1.8G and AF-NIKKOR 50mm f/1.8G be one and the same because of the DX and FX format??
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6answers
4k views

How do I get the 'equivalent' focal length for a DSLR lens for my camera?

On my Nikon D3000, how do I figure the focal length equivalence? In other words, if I want a lens that is just like a 50mm lens on a 35mm film SLR, I need to multiply by a factor. What is the factor, ...
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3answers
552 views

Why do my 100mm EF macro lens and my EF-S zoom set at 100mm appear to give a different field of view?

I have a Canon EF 100mm Macro and a Canon EF-S 18-200mm Lens, and using a Canon EOS 60D. I believed that when setting the Zoom Lens to 100mm it would show the same field of view as the one from ...
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3answers
763 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 ...
11
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4answers
915 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 ...
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3answers
504 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 ...
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5answers
2k 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 ...
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4answers
4k 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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6answers
2k 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 ...
12
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3answers
2k 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 ?
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2answers
2k 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 ...
12
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2answers
2k 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 ...
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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 ...
46
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5answers
11k 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 ...
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3answers
519 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 ...
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1answer
3k 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 ...
39
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6answers
2k views

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 ...
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0answers
229 views

What does “crop factor” mean on a DSLR? [duplicate]

Possible Duplicate: What is the difference between focal length and crop factor? I see the term "crop factor" used to describe some DSLRs (for example, the Canon 7D has a 1.6x crop factor). ...
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10answers
4k 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 ...