All Forum Comments
Comment by Anvh posted on What's next? at 19/10/2010 - 20:39
johnriley wrote:
So if I sketch a situation you can say what focal length to use? great Quote:
When you know a church is so high and you use that lens with that camera you can calculate how far away you need to be to get the church fully in the frame.
To be honest, you don't need to calculate this. Eyes and legs plus having taken lots of photos before will give the answer instantly! When you know a church is so high and you use that lens with that camera you can calculate how far away you need to be to get the church fully in the frame.
So for example a 65 meter high church no possibility to stand further away then lets say 30 meters or you will lay in the water or your vision is obscured by the surrounding buildings.
What focal length do you need to use to have the whole tower of the church in the frame?
Comment by Anvh posted on Is there a cheap way to go wider than 18mm? at 19/10/2010 - 20:33
DC = Direct Current
Instead off SDM that an ultrasonic engine is Pentax has now put a brush-less direct current engine in their new lens.
smc PENTAX-DA18-135mm F3.5-5.6 ED AL [IF] DC WR
Instead off SDM that an ultrasonic engine is Pentax has now put a brush-less direct current engine in their new lens.
smc PENTAX-DA18-135mm F3.5-5.6 ED AL [IF] DC WR
Comment by Anvh posted on camera change at 19/10/2010 - 20:10
Mike-P wrote:
And don't forget the new DC drive inside the DA 18-135 WRbretti_kivi wrote:
A k100d will not accept SDM lenses, if I remember right. Considering they're all DA*, I doubt you have much to worry about.
17-70mm is not a DA*A k100d will not accept SDM lenses, if I remember right. Considering they're all DA*, I doubt you have much to worry about.
Comment by Anvh posted on camera change at 19/10/2010 - 19:50
davex wrote:
If the manual lens does not have quick shift(unlikely) you will have problems.
Why so?If the manual lens does not have quick shift(unlikely) you will have problems.
You can always MF the lens on-top of the 1.7x AF TC right?
Comment by Anvh posted on what macro lens?? at 19/10/2010 - 18:14
Smeggypants wrote:
Much more sensible to measure field of view in degrees.
Precisely, that's why FOV is never given with lenses but AOV.Anvh wrote:
How would field of view be measured in distance? You'd need to specify a distance from the lens as a benchamrk johnriley wrote:
Unfortunately photographers have never taken to measuring lenses in terms of FOV, usually expressed in degrees. It has been mooted over the years but never caught on.
If it's expressed in degrees it's actually Angle Of View (AOV) Field of view is measured in distance (metres, feet).Unfortunately photographers have never taken to measuring lenses in terms of FOV, usually expressed in degrees. It has been mooted over the years but never caught on.
Much more sensible to measure field of view in degrees.
However with almost everything else besides photography the FOV is given in degrees though and it means what AOV means in photography, that's just to make it all more confusing.
FOV is used to calculate how high/wide the captured frame will be at a given distance.
So you can take a photo that way without using a viewfinder for example or plan a shot in advance.
When you know a church is so high and you use that lens with that camera you can calculate how far away you need to be to get the church fully in the frame.
Comment by Anvh posted on Is there a cheap way to go wider than 18mm? at 19/10/2010 - 18:06
Am i glad i've updated the link in time
Comment by Anvh posted on Inflatable studio at 19/10/2010 - 17:52
Peter, I'm quite serious. link
hmmm they also have models with a form off a dog... where would you use those for?
i'm sure no one dares to click the link now
hmmm they also have models with a form off a dog... where would you use those for?
i'm sure no one dares to click the link now
Comment by Anvh posted on Inflatable studio at 19/10/2010 - 17:46
Teasing
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Comment by Anvh posted on Voting competition #4 - Leaves at 19/10/2010 - 17:17
I would though it come with inflatable models as well
Comment by Anvh posted on Inflatable studio at 19/10/2010 - 17:05
Focus bracketting is something that would interest me. It'd be very easy to impliment in firmware too. Just select a start point, an end point, and number of steps in between. Job done.
The camera sees what focal length and aperture you use so it should be able to calculate that and even place the focus on it.
The only problem is that the lens and th body needs to talk more with each other then they do now.