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Forum: Sold Items 08-14-2010, 04:55 PM  
For Sale - Sold: Tamron SP AF 90mm 2.8 DI MACRO 1:1 (Worldwide)
Posted By levobjk
Replies: 10
Views: 3,859
can you ship to Turkey ?
Forum: Sold Items 08-09-2010, 04:01 AM  
For Sale - Sold: K20D with DA 18-55mm and 50-200mm lenses and bag (Worldwide)
Posted By levobjk
Replies: 12
Views: 3,901
what is shipping cost to Turkey?
Forum: Video and Pentax HDSLRs 04-03-2010, 02:04 AM  
K-x video samples
Posted By levobjk
Replies: 157
Views: 38,981
[YT]http://www.youtube.com/watch?v=vAWvrNv0MEo[/YT]
Forum: Sold Items 03-13-2010, 01:58 AM  
For Sale - Sold: Sigma 17-70mm F2.8-4.5 MACRO (Worldwide)
Posted By levobjk
Replies: 4
Views: 1,694
pm sent for it.
Forum: Video and Pentax HDSLRs 02-16-2010, 08:02 AM  
full manual control with fader ND?
Posted By levobjk
Replies: 3
Views: 3,774
What do you mean by "full manual control" ? Can you give example?
With using a manual lens, I think I already have nearly manual control.
check my video please.

[YT]http://www.youtube.com/watch?v=vAWvrNv0MEo[/YT]
Forum: Video and Pentax HDSLRs 02-09-2010, 05:22 AM  
Setting Shutter Speed for Video (A How To Guide)
Posted By levobjk
Replies: 77
Views: 32,945
:o I'm so sorry.
Forum: Video and Pentax HDSLRs 02-09-2010, 04:46 AM  
Setting Shutter Speed for Video (A How To Guide)
Posted By levobjk
Replies: 77
Views: 32,945
Thank you Karl,

As I understand from these tables, you're sure that k-x first decreases shutter speed and after 1/25 is catched, it starts increasing ISO. Or is this table just a theory?

Are there any ways of understanding ISO - shutter speed of a video?

thx
Forum: Video and Pentax HDSLRs 02-09-2010, 01:07 AM  
Setting Shutter Speed for Video (A How To Guide)
Posted By levobjk
Replies: 77
Views: 32,945
Hello,
I have a question.
Lets say that I've locked the EV at ISO100 & SHUTTER 1/100 and I am using a manuel lens..

When started recording, if I close the aperture from F/1.7 to 2.8, how does k-x behave? Will it increase ISO or decreae SHUTTER? Or both ?

thx,
Forum: Video and Pentax HDSLRs 02-08-2010, 04:55 AM  
K-x video samples
Posted By levobjk
Replies: 157
Views: 38,981
Hi,
I read in a topic that SR affects video recording and it causes to produce much more gain. Did you observe smth like this?
I made some tests and i didnt realize any difference.

thx,
Forum: Video and Pentax HDSLRs 02-06-2010, 12:31 AM  
Setting Shutter Speed for Video (A How To Guide)
Posted By levobjk
Replies: 77
Views: 32,945
Come on Falk,

You cannot be serious :p I am not capable of making such a test.:o
I even don't have photoshop yet. I'm using pentax's software instead.

But I got what you mean. Nowadays I'm trying to solve our issues about sony VEGAS. Maybe later... :)

thanx anyway,

Levent
Forum: Video and Pentax HDSLRs 02-05-2010, 12:34 AM  
Setting Shutter Speed for Video (A How To Guide)
Posted By levobjk
Replies: 77
Views: 32,945
What do you mean by"fraction of their dots" ? megapixel ?
Lets say a = noise in 500d and b = noise in k-x

a > b (in stills)
a/fa < b/fb (in video)

What makes you think fb is much more smaller then fa?
Forum: Video and Pentax HDSLRs 02-04-2010, 08:44 AM  
Setting Shutter Speed for Video (A How To Guide)
Posted By levobjk
Replies: 77
Views: 32,945
Dear Falk,
How can you explain k-x having less noise in stills compared by canon 500D, while in video mode 500D has less noise then k-x ?

thx
Levent
Forum: Video and Pentax HDSLRs 02-01-2010, 01:49 PM  
Setting Shutter Speed for Video (A How To Guide)
Posted By levobjk
Replies: 77
Views: 32,945
hi everybody

I made a quick test with k-x + smc-A 50mm F1.7 lens

1- In A mode, I selected Av mode, set iso to 100, make k-x select shutter as 1/50, switch video mode and quickly lock the exposure... And shot the video... F=1/1.7

2- In M mode, I selected P mode, set iso to 100, make k-x select shutter as 1/50, lock the exposure, switch video mode and shot the video... F= 1/1.7 again..

These two videos should be same, dont they? But they werent... The second video is much more bright&noisy...

I'm sure I did not do anything wrong... Locking shutter in P mode doesnt seem to work...
Forum: Sold Items 01-28-2010, 05:31 AM  
For Sale - Sold: Pentax F 50mm f/1.7
Posted By levobjk
Replies: 5
Views: 1,857
pm sent......
Forum: Video and Pentax HDSLRs 01-28-2010, 01:37 AM  
quality of lens for video
Posted By levobjk
Replies: 17
Views: 4,161
- I never use higher iso then ISO100 at low light conditions.
- If it is too dark, I use 1/25 shutter speed instead of 1/50 but motion blur is a problem as KARL79 mentioned. I prefer motion blur to noise in ISO200 or higher :)
- You must have a fast lens and you must use it wide open. But the main disadvantage of this is very narrow DOF and hardness of manuel focusing.
- If you have a manual fast lens like mine, you can play with DOF during video (in good light conditions)
- There are several programs for reducing noise, you can try them.
Forum: Sold Items 01-27-2010, 08:06 AM  
For Sale - Sold: Pentax FA 50mm 1.4 in Mint Condition
Posted By levobjk
Replies: 8
Views: 1,892
Does this price include shipment to Turkey ?
Forum: Video and Pentax HDSLRs 01-25-2010, 06:45 AM  
Pentax K-X first video
Posted By levobjk
Replies: 15
Views: 4,183
@nafta
which program do you use for editing?
And which program would you advice to a starter? :)
Forum: Video and Pentax HDSLRs 01-25-2010, 05:34 AM  
quality of lens for video
Posted By levobjk
Replies: 17
Views: 4,161
thank you for this useful tip :)

which editor would you recommend for editing videos? Easiest for cut-copy-paste-inserting fx ?
Forum: Video and Pentax HDSLRs 01-23-2010, 11:57 PM  
quality of lens for video
Posted By levobjk
Replies: 17
Views: 4,161
@karl79
what will be the diference between 1/50 and 1/25 shutter speed in video?
I thought that kx shoots 24p video so 1/25 would be the best choice in order to catch more light..

@brandoniscool
You will learn the right time to hit the AE button when you practice :) Btw if you do not have a fast lens (licke F1.7 or F1.4) , these settings will not be useful, the screen will be dark...
Forum: Video and Pentax HDSLRs 01-23-2010, 04:47 PM  
quality of lens for video
Posted By levobjk
Replies: 17
Views: 4,161
You must select Av mode first. Then choose ISO100 and manually make k-x choose 1/25 shuyyer speed.
Then quickly jump to video mode and lock the exposure with Ae button befpre screen comes.
This way you will lock the settings in Av mode before k-x change them auto in video mode..

got it?
Forum: Video and Pentax HDSLRs 01-22-2010, 05:30 AM  
reducing video noise/grain
Posted By levobjk
Replies: 23
Views: 7,651
@limabean
I do not agree with you. I can shot iso-less movies using my new 50mm smc-A F1.7 lens.
Please check the videos below. I think they are great or is there smth that I cannot see??

[YT]http://www.youtube.com/watch?v=3fylWJGPdZU[/YT]

[YT]http://www.youtube.com/watch?v=q016orYWgAs&feature=channel[/YT]
Forum: Sold Items 01-22-2010, 02:40 AM  
For Sale - Sold: FA50mm 1.4, 540 Flash, K100d
Posted By levobjk
Replies: 14
Views: 3,626
pm sent regarding fa 50mm
Forum: Video and Pentax HDSLRs 01-18-2010, 02:47 AM  
quality of lens for video
Posted By levobjk
Replies: 17
Views: 4,161
you can read other topics, they told how to fix ISO & shutter speed with some tricks. But you can never shoot this fireplace video with kit lens.
Forum: Video and Pentax HDSLRs 01-18-2010, 12:20 AM  
quality of lens for video
Posted By levobjk
Replies: 17
Views: 4,161
hi,

I've bought a SMC-A 50mm F1.7 from ebay. It is a magnificent lens for photograpghy but i also considered about video when buying it.

As you know k-x takes noisy videos particularly in low light conditions. To have an acceptable noise in a hd video, you must not take it over ISO200. And to take a video with ISO200 or ISO100, you need and aperture like 1.4 or 1.7 , because you cannot have a shutter speed more then 1/25.

Thats why my friend, as you've said, an old manuel lens will give you great opportunity in video mode.

1-) You can change aperture during video

2-) You can use ISO100 + 1/25 + F/1.7 setting at nights and it is usefull, here is an example

[YT]http://www.youtube.com/watch?v=3fylWJGPdZU[/YT]
Forum: Video and Pentax HDSLRs 01-17-2010, 01:46 PM  
Any experience to share on using MF lens for video
Posted By levobjk
Replies: 16
Views: 6,472
[YT]http://www.youtube.com/watch?v=3fylWJGPdZU[/YT]

A new night video
I would like to take your comments

thx
levent
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