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bio website nbdtech.com/Blog
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I'm a software developer and photography enthusiast.

I've developed Giraffe Upload ( http://www.giraffeupload.com ) a photo backup system and my photography blog is at http://UsefulPhotoTips.com


May
21
reviewed No Action Needed picture resolution to a canvas print
May
20
reviewed Reopen How can I improve this picture of my friend on vacation?
May
20
answered Exposure compensation or ISO sensitivity?
May
18
comment Do Left and Right matter in how the photo is perceived?
@RussellMcMahon - you made me laugh - but I'm going to answer your comment seriously - I wrote only about LTR language audience, I suspect (but don't have anything to back it up so I didn't write it) that the reverse isn't true for RTL/vertical languages - but if it does - you can have the subject look slightly down/up or look/move toward one top/bottom corners
May
14
comment Do Left and Right matter in how the photo is perceived?
@mattdm - there is good research that show people scan pictures in reading direction but I can't find any credible scientific study about the feeling difference of LTR vs. RTL images
May
14
answered Do Left and Right matter in how the photo is perceived?
May
11
comment Why shutter is not closed by-default on mirrorless cameras as it's closed on film ones?
@BrianFunt - the sensor can't stop recording, light sensitive electronics remain light sensitive even when it's inconvenient, "electronic shutter" is implemented by reading the data while the sensor keeps recording, you either get low resolution (when reading the entire sensor at once) or strange artifacts with fast moving subjects (when reading line-by-line), your typical compact point-and-shoot is both low-res (compared to DSLR/mirrorless) and not typically used for high-speed subjects, high-end point and shoots usually have mechanical shutters
May
11
comment Why shutter is not closed by-default on mirrorless cameras as it's closed on film ones?
@BrianFunt - the shutter need to close when you finish taking a picture, when the shutter closes no more light is hitting the sensor so the camera can spend some time reading the data off the sensor without new light changing the data while it is being read
May
11
answered Why shutter is not closed by-default on mirrorless cameras as it's closed on film ones?
Apr
22
comment What is the best paint to use to make backdrops for studio photography with blown out white backgrounds, and dark black backgrounds
@yoshiserry in the past I've successfully used one $70 Chinese speedlight and a cream-ish off-white wall to create a white background image. the more expensive lights are better but you don't need that much light unless you need to overpower the sun or have a huge area to light. in a studio, photographing one or two people, a 3 or 4 speedlight kit will give you all the power you really need and a good 500 watt set (preferably with adjustable power) will give you all the extra power, speed and flexibility you will ever want.
Apr
13
answered What is the best paint to use to make backdrops for studio photography with blown out white backgrounds, and dark black backgrounds
Apr
7
answered How can I make the most of entry level camera gear?
Apr
3
awarded  Revival
Apr
1
answered Camera body vs lenses - which is more important technically?
Mar
31
comment Can using a reflector or external flash soften harsh natural light, or just fill in shadows?
@Morpho - this is not a problem, you can control the power and softness of the light by moving the reflector closer of farther from the model and by using a bigger or smaller reflector, it's all controllable and you should play around until you get the look you want - and you probably don't want balance, balanced light is boring, interesting light has direction and shadows and often color - and if you do want balance you don't do it in direct sunlight, you find some shade.
Mar
31
answered Can using a reflector or external flash soften harsh natural light, or just fill in shadows?
Mar
31
comment What are meaningful deciding factors when deciding between Canon 5D mark III vs mark II?
@Morpho - (cont from prev comment) ... the phase detect auto focus in the 5Dmk3 with a new lens is both fast and accurate, it focuses as well as contrast detection or very careful manual focus (the focusing mistake is too small to detect) - now the 5Dmk3 does not miss focus because of the camera technology limitations, but, this only translates to better images if: 1. you had a focusing problem to begin with (if you don't shoot with shallow DOF the old system is accurate enough), 2. you have good technique (photographer mistakes cause much larger error than camera mistakes)
Mar
31
comment What are meaningful deciding factors when deciding between Canon 5D mark III vs mark II?
@Morpho - phase detect auto focus systems are designed to be fast at the cost of being less accurate, the camera focuses at some range around the object the focus point is on and not exactly on that object, normally you don't notice it because it's close enough and less then your DOF - but if you have a very shallow DOF you can see your picture isn't properly focused (you tried to focus on the eye but it missed and either the tip of the nose or the ear is in sharpest focus) ... (cont in next comment)
Mar
31
comment What are meaningful deciding factors when deciding between Canon 5D mark III vs mark II?
@Morpho - it means that you get smaller focusing errors - if you have problems with missed focus (and your equipment and technique are good) it can help.
Mar
31
comment What are meaningful deciding factors when deciding between Canon 5D mark III vs mark II?
@Morpho - The new focus system is still better than the old one even with older lenses (but doesn't enjoy the new accuracy improvement) most Canon lenses released since 2010 have the extra electronics to get the high accuracy, for more details visit lensrentals.com/blog/2012/08/…