All Forum Comments
Comment by Anvh posted on First play off camera flashguns - what am I doing wrong? at 10/01/2010 - 15:15
Yes John you're right, I make it a bigger problem then it is.
All it does is bring the shutterspeed down more.
You could probably test it with older lenses that are missing the coating so the Takamur lenses.
All it does is bring the shutterspeed down more.
You could probably test it with older lenses that are missing the coating so the Takamur lenses.
Comment by Anvh posted on Anyone here keep their 6MP SLRs for infrared? at 10/01/2010 - 14:20
RichardDay wrote:
Big difference between D-FA 100 & D-FA 100 WR bokeh due to the rounded blades D-FA100 WR bokeh
That's not bokeh though that's change, but it's great that there is prove I'm right for once, read my post above.Big difference between D-FA 100 & D-FA 100 WR bokeh due to the rounded blades D-FA100 WR bokeh
Only the highlights look rounder but if you look at what's further in the background then you won't see any difference so the difference in the out of focus blur is very minimal except for the highlights.
Comment by Anvh posted on 100mm F2.8 W/R Macro at 10/01/2010 - 14:12
John I've also heard about the blue lights, it appear that our eyes are pretty good with blue light and keep us awake, our biological clock runs on blue light.
Also animals, namely birds, have less of a problem with the blue light.
Sometimes they get lost with the yellow lights of the street lamps.
That was all heard on a radio program, so don't know if you can find something on the web about it.
Also animals, namely birds, have less of a problem with the blue light.
Sometimes they get lost with the yellow lights of the street lamps.
That was all heard on a radio program, so don't know if you can find something on the web about it.
Comment by Anvh posted on Sodium Street lighting - Filter? at 10/01/2010 - 13:14
Jon the lens coating also blocks the light, just do a google search for removing lens coating for IR and you will find enough sites.
Also Carl Zeiss makes special IR lenses with a special coating. link
Also Carl Zeiss makes special IR lenses with a special coating. link
Comment by Anvh posted on Anyone here keep their 6MP SLRs for infrared? at 10/01/2010 - 13:09
Thanks Oggy.
Well the problem is back again, I only get the flash in with a shutterspeed at or slower then 1/15 and I ain't the only one with this problem.
http://www.pentaxforums.com/forums/camera-studio-accessories/77697-cactus-v4-problems.html
They said it's the temperature but I've not been outside for the day and inside it's 19 degrees Celsius so if they don't do it now they will probably never work right so the temperature isn't the problem with mine device.
Will go back on a Wednesday and hopefully they switch it for a new one and I get the right light stand
btw, my cactus v4 is pretty reliable since it has always flashed so that's fine, only wished it flashed what sooner instead of 1/15 of a second to late
Well the problem is back again, I only get the flash in with a shutterspeed at or slower then 1/15 and I ain't the only one with this problem.
http://www.pentaxforums.com/forums/camera-studio-accessories/77697-cactus-v4-problems.html
They said it's the temperature but I've not been outside for the day and inside it's 19 degrees Celsius so if they don't do it now they will probably never work right so the temperature isn't the problem with mine device.
Will go back on a Wednesday and hopefully they switch it for a new one and I get the right light stand
btw, my cactus v4 is pretty reliable since it has always flashed so that's fine, only wished it flashed what sooner instead of 1/15 of a second to late
Comment by Anvh posted on First play off camera flashguns - what am I doing wrong? at 10/01/2010 - 12:56
yes it does and it is correct but light is difficult to understand.
I can see where you're coming from since it's such a narrow band but in what way does the light source differ from each other?
Al you try to do with white balance is trying to make white, white and that's exactly what you want right?
So the Yellow sodium light is filtered out/shifted so that you get white.
I think we are talking about the same thing here but seeing it differently
About the 2100k, I've tried that as well and indeed it's to blue.
With the shot of mine I took the white balance from the roundabout traffic sign and it meters.
colour temperature of 3450k
and a tint of +50 magenta
Also there is a big difference in high and low pressure sodium lights
here read this, the smal part about sodium light at the end link
I can see where you're coming from since it's such a narrow band but in what way does the light source differ from each other?
Al you try to do with white balance is trying to make white, white and that's exactly what you want right?
So the Yellow sodium light is filtered out/shifted so that you get white.
I think we are talking about the same thing here but seeing it differently
About the 2100k, I've tried that as well and indeed it's to blue.
With the shot of mine I took the white balance from the roundabout traffic sign and it meters.
colour temperature of 3450k
and a tint of +50 magenta
Also there is a big difference in high and low pressure sodium lights
here read this, the smal part about sodium light at the end link
Comment by Anvh posted on Sodium Street lighting - Filter? at 10/01/2010 - 12:46
Photoshop is a very different program then Silkypix and other such programs (lightroom, phase one, ect.) I don't think you can compare them like to like.
You can however compare Adobe Camera Raw with Silkypix, if you shoot in RAW and open it with Photoshop then you know what I mean.
That's the part that Silkypix will take over in your processing.
For purely photos Silkypix is enough to get a good end-results but for the creative imaging/pixel editing you need to have Photoshop (gimp).
You can however compare Adobe Camera Raw with Silkypix, if you shoot in RAW and open it with Photoshop then you know what I mean.
That's the part that Silkypix will take over in your processing.
For purely photos Silkypix is enough to get a good end-results but for the creative imaging/pixel editing you need to have Photoshop (gimp).
Comment by Anvh posted on Silkypix vs CS4 at 10/01/2010 - 12:18
Indeed HG, but if your serious in it then it might be worth it.
I wonder if you can remove the RGB filter of the sensor without much problems and what the algorithm would make of it...
With an IR filter you don't capture blue and green so no need to have a filter on that so with IR you will have 4 times the pixels/resolution.
So then your 6mp sensor would out preform the 14mp sensor in the newer pentaxs.
I wonder if you can remove the RGB filter of the sensor without much problems and what the algorithm would make of it...
With an IR filter you don't capture blue and green so no need to have a filter on that so with IR you will have 4 times the pixels/resolution.
So then your 6mp sensor would out preform the 14mp sensor in the newer pentaxs.
Comment by Anvh posted on Anyone here keep their 6MP SLRs for infrared? at 10/01/2010 - 12:11
The colour space wouldn't do a thing since RAW don't have one
If you don't mind beta software why not use Lightroom 3 beta?
http://labs.adobe.com/technologies/lightroom3/
You can use it till April 30
The nice thing is you can easily batch process so the colour shift can be sorted out in matters off seconds in all your photos.
If you don't mind beta software why not use Lightroom 3 beta?
http://labs.adobe.com/technologies/lightroom3/
You can use it till April 30
The nice thing is you can easily batch process so the colour shift can be sorted out in matters off seconds in all your photos.
Comment by Anvh posted on K7 Raw files and Photoshop CS3 at 10/01/2010 - 12:03
Do someone else have problems with them?
I want to know if it's just my device or if there are more of them, if just me then I will switch them over for a new pair if there are more I will get a different brand.