Serene Life

by garik

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1,236 reputation
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bio website Philcyr.com
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visits member for 3 years, 9 months
seen Aug 29 at 17:45

Aug
12
comment Difference between short/long exposure for faraway objects?
When in doubt the middle is best: (From Feynman) "When you have a gear ratio, say 2 to 1, and you are wondering whether you should make it 10 to 5 or 24 to 12 or 48 to 24, here's how to decide: You look in the Boston Gear Catalogue, and select those gears that are in the middle of the list.The ones at the high end have so many teeth they're hard to make, if they could make gears with even finer teeth, they'd have made the list go even higher. The gears at the low end of the list have so few teeth they break easy. So the best design uses gears from the middle of the list."
Jul
24
comment Why use higher ISO when using a tripod and the object is static?
Include the photo inline please? The link is down.
Feb
20
comment Why does Spyder4Pro calibration of Seiki Monitor look odd?
I have one of these monitors at work. Updating the firmware is the best thing I've done to it. The service menu is a lot of fun as well. The default sharpness setting is awful!
Jan
19
awarded  Yearling
Dec
10
comment Can my dSLR add a signature or watermark without post-processing?
Right in front of the film, it would only work well with small aperture.
Dec
6
answered Can my dSLR add a signature or watermark without post-processing?
May
21
comment How large an exposure difference before it's noticable?
Jitter is a common term in electrical engineering to refer to variation in the period of a wave.
May
15
comment Is it the lens or is it the camera producing a black blob on every photo?
Apply the scientific method.
May
14
comment Is there any difference in the glass between Zeiss cine and photo lenses?
Might be wrong so I won't post an answer, but I think usually cine lenses don't have aperture detents to allow smooth transitions in depth of field.
Apr
24
comment How to manually focus Nikon d5100 at very low light conditions?
Even if shining a light on the subject does not light it up enough, if there is a round metallic part it will likely have a reflection. Manually focus to minimize the size of the reflection.
Apr
12
comment If I have a 18-55mm lens, is there a point in buying a 35mm prime lens?
I had a 18-55mm kit lens, then got a 50mm f1.4. I did not take the 1.4 off my camera for the next 15'000 shots. The level of control in image quality is well worth it, combined with the peace of mind knowing that you only have to consider one focal length when trying to make the shot. If it does not fit, then it does not fit, you walk on happy.
Mar
25
awarded  Constituent
Mar
19
comment Best Unsharp Mask settings after resizing photos for imagemagick
+1, first sentence!
Mar
18
awarded  Caucus
Mar
18
comment How can I change colour of reflection/shadows to blue, to match the water?
Go to the layers and click the channels, find the one with the most contrast, Ctrl+A, Ctrl+C to grab it. Go back to the layers and add a new layer, then Ctrl+V to paste it. Use levels to get a good contrast, then use threshold to get the area isolated. Duplicate the image, and apply this new layer as a mask. Then use the hue-shift (it is in the image menu? I am not at my computer so I can't check) tool to correct the color how you see fit. If you need more detail, Google some of the terms I have talked about, these are all very common steps to complete.
Mar
14
comment How do you correct the yellow tint of a vintage photo and restore the original colors?
It would REALLY help if the link worked. :)
Mar
6
comment Waterproof Alternatives to Pelican Cases?
If you need a hard case that is truly waterproof, I don't think you can beat Pelican.
Mar
4
comment How does focus work on mobile phone cameras?
Cool question. I had always assumed it was an electromagnetic stage like in a CD player.
Mar
4
comment How does a circular lens produce rectangular shots?
Round sensors would not fit on wafers well. Using a square sensor that is large enough to capture the full circle is common- it is called putting a crop lens on a full frame body.
Mar
4
comment Why not have the diaphragm in camera body instead of the lens?
+1, exactly the answer. From a practical standpoint- the delicate shutter has a mirror to protect it, if the diaphragm was placed in the body there would be nothing to protect it.