Linked Questions

7
votes
3answers
2k views

What's the formula for f-stop equivalence between different sensor sizes?

The famous Group f/64, to which Ansel Adams and several other prominent photographers of that day belonged, were named that because of the f-stop: The term f/64 refers to a small aperture setting ...
0
votes
6answers
6k views

Do f-stops scale with sensor size the way focal length does? [duplicate]

Does the aperture rating scale with sensor size the way focal length does? For example, is a 25mm 1.2 MFT lens equivalent to a 50mm 1.2 FF lens or to a 50mm 2.0 FF lens?
27
votes
3answers
3k views

Is it physically possible to build a long zoom (17-300 mm for example) at an aperture value of around 1.4 or 1.2?

I'm curious if the physics allow a company to build such a lens of course with good IQ, minimal color aberration, maximum sharpness, and little to none lens vignetting or edge softness
2
votes
3answers
5k views

1 Inch 20MP sensor vs 1/2.3" 12MP sensor?

All things being equal, is a 1-inch 20MP sensor basically the same as a 1/2.3" 12MP sensor? If it is the same, does it then boil down to which camera has better mechanics; lens, mechanics, etc? ...
2
votes
4answers
385 views

Since larger pixels increase depth of field and sensitivity, why don't we have large sensors with a low number of pixels?

If I understood correctly, the DoF (all other parameters fixed) increases with the pixel surface. So to have a high sensitivity together with a deep DoF, why don't we just have big pixels (and thus ...
38
votes
7answers
17k 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 ...
149
votes
10answers
54k views

What is the “exposure triangle”?

What is the exposure triangle? How do the "sides" affect my photographs?
24
votes
6answers
15k views

Are there general rules for selecting the correct shutter speed and ISO in manual mode?

I have purchased my first DSLR (a Canon 500D) and have been playing around quite a lot within the aperture priority mode, with auto shutter speed and ISO. Anyways as I would like to become a better ...
0
votes
3answers
189 views

Is it beneficial to use full frame for blurred background?

I have often heard it said that to have a blurred background, it is beneficial to shoot full frame. However, is this really true? The useful largest aperture is anyway limited by the amount of depth ...
9
votes
5answers
1k views

Would a 50mm lens on a Canon APS-C crop produce the exact same image as an 80mm lens on a full frame camera?

Scenario: I put a 80mm lens on a FF camera and take a picture I put a 50mm lens on a Canon APS-C crop camera (1.6x crop) and take a picture Going by the 1.6x crop, I understand the fields of view of ...
16
votes
10answers
3k views

Is replacing all my Fujifilm gear with this Canon zoom lens an upgrade?

I'm a hobby photographer. I like taking portraits, which I often do at festivals and conventions. I usually take the following gear: Fujifilm X-T2 (an APS-C sensor mirrorless camera), a 16-55mm f/2.8 (...
38
votes
2answers
7k views

Why no zoom lenses with a maximum aperture wider than f/2.8?

I can understand that a zoom lens with a maximum aperture wider than f/2.8 would be difficult and costly, but it seems like something pros would kill for. Surely it can't be more expensive (if its ...
1
vote
4answers
477 views

FX 50mm on DX sensor giving same picture as DX 50mm on DX sensor? [duplicate]

One of the lenses I have for my Nikon D3200 is the 50mm f/1.8 FX lens, which when placed on the DX sensor should act like a 75mm f/2.7. On my Sony a6000, I have a 55-210mm f/4.5-6.3 lens made for the ...
3
votes
7answers
17k 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 ...
1
vote
6answers
647 views

Lens equivalent depth of field [duplicate]

This question is ported directly from Physics SE, because the guys there believe this is the right place for it. In digital photography, there's the principle of lens equivalency, according to which, ...

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