Serene Life

by garik

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I'm a technician, not a photographer.


Oct
20
comment What's the best lens for shooting baby's and children?
For shooting baby's what? Sorry, had to.
Oct
16
revised Do I use the crop factor in calculating aperture size and area?
added 123 characters in body
Oct
15
answered Do I use the crop factor in calculating aperture size and area?
Oct
14
comment Do I use the crop factor in calculating aperture size and area?
Well, I'd suggest to use a 35mm lens in the answer to avoid confusion. Because it's not right. For any prime lens, you don't obtain the focal length by dividing by the crop factor. I read the question, but would have answered it differently.
Oct
14
comment Do I use the crop factor in calculating aperture size and area?
So you need to obtain the actual focal length by dividing by the crop factor ...Sorry, I don't follow... The size of the aperture of that lens (50mm ƒ/2.8) on APS-C, Medium Format, 4/3's is... 17.857mm. Why are you suggesting to multiply (or divide) by the "crop factor"?
Oct
14
comment Are the aperture, ISO and shutter speed stops perfectly interchangeable?
Other than background blur (which you exclude) No he doesn't: My question is, apart from the obvious changes in the depth of field due to the aperture change
Oct
1
comment Is there a radio flash control system for Olympus that allows setting flash power from the camera?
I like your answer! I've never seen an accepted answer change 2 years later. :P
Sep
27
awarded  Yearling
Sep
24
awarded  Autobiographer
Sep
19
comment Invariants in subject size and depth of field?
Sorry, but you never said Given a fixed sensor, object, aperture, and magnification, do some lenses offer greater DoF than others? in your question. Invariants in subject size and depth of field? So, seeing as you said No matter what focal length I select the depth of field for the same angle of view is constant. you ARE NOT keeping the focal length constant. If you are changing the focal length and you want to keep the the field of view constant, you have to change the subject distance or subject size...
Sep
18
revised Invariants in subject size and depth of field?
added 252 characters in body
Sep
18
comment Invariants in subject size and depth of field?
I've found this more interesting than I thought. Upvoted! Becuase now I'm thinking of a cube, say 10cm³ and then 100cm­³ at the same distance from the sensor, if the DoF will look the same? If you printed them out? BUT, it would physically be different?? This is getting interesting...
Sep
18
answered Invariants in subject size and depth of field?
Sep
18
comment Invariants in subject size and depth of field?
Oh... I see. Also, it was a joke. :) and Thanks = That's. Insanity; Doing the same thing (over and over) and expecting different results.
Sep
18
comment Invariants in subject size and depth of field?
@feetwet The luminous-landscape demonstrates the invariance of what? Background compression? YES! Exactly!! However, it also demonstrates the CONSTANCE of the depth of field when changing focal lengths and also subject distance, while keeping the aperture constant. Which is what you said No matter what focal length I select the depth of field for the same angle of view is constant.
Sep
18
comment Invariants in subject size and depth of field?
... for example: f2.8, Canon 1ds mk II, 12 mm and 0.5 m. You will get a total DOF of 0.31 meters. Change the settings to f2.8, Canon 1ds mk II, 12 mm and 0.5 m and you will get a total DOF of 0.29 meters. What the... Did you just use the same things and get a different result? Thanks insanity!
Sep
9
revised Can exposure parameters be kept high even at high ISO sensitivity, to keep image quality up?
added 5 characters in body
Sep
9
answered Can exposure parameters be kept high even at high ISO sensitivity, to keep image quality up?
Aug
26
answered Which mirrorless have the best live view for night photography?
Aug
21
comment How to maximise the impact of car headlight trails in long exposure
I didn't mean how they look... To put it simply, do the street lights in my images have too much or too little impact to what you are trying to achieve? The only way to reduce the impact of the street lights is to reduce exposure and increase the light (of which you want more impact). That is to say, reduce exposure and increase traffic flow.