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Old 13th January 2010, 12:58   #2761
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Quote:
Originally Posted by clevermax View Post
I guess it is just the bokeh (50mm lens wide open!) and not any camera shake. Good shallow DOF.
Thats not bokeh! Just some shallow DOF. If you want bokeh, check these pics out

The DSLR Thread-img_7643_1.jpg

The DSLR Thread-img_3238.jpg

Both taken with the EF 85mm f/1.2 L II. Best lens for Canon for bokeh. PERIOD. Although the second pic did not come out that nicely sigh.
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I disagree. More motion blur in picture (for the same amount of vibration given to the camera) is observed as you zoom more towards telephoto range. If there is a shake, it affects everything in the picture in the same way. However, if the size of the object is relatively large compared to the frame (for example, car here) you wont notice the shake in it that much. If the size of the object is small compared to the frame, (the thin light pole) you may observe more shake in that.
What I said was a calculated guess. Glad to know the correct reason
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Old 13th January 2010, 13:28   #2762
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Originally Posted by SunnyBoi View Post
Thats not bokeh! Just some shallow DOF. If you want bokeh, check these pics out
Wow. I thought both are same.
My new understanding: Bokeh achieved by shallow DOF. But not other way around?
Is this right?
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Old 13th January 2010, 13:46   #2763
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Originally Posted by iamswift View Post
Wow. I thought both are same.
My new understanding: Bokeh achieved by shallow DOF. But not other way around?
Is this right?
Shallow DOF = background blur. Bokeh is the quality of the background blur.
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Old 13th January 2010, 13:46   #2764
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Here's a nice explanation.

DOF

Bokeh

Cheers
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Old 13th January 2010, 13:58   #2765
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I've seen many people complimenting some shots by saying "Wow, what a depth!" The funny thing is, these comments will be actually for the shots with a shallow DOF, like the portraits posted just above. BTW, nice pictures there SunnyBoi!

Very high Depth of field is achieved with narrower apertures. there will be almost everything in focus in those pictures.

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Originally Posted by Sankar View Post
Shallow DOF = background blur. Bokeh is the quality of the background blur.
Yes! More even and widespread background blur is considered to be quality bokeh.

I like that hexagonal bokeh for background lights than the perfect round one:


Last edited by clevermax : 13th January 2010 at 14:06.
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Old 13th January 2010, 14:16   #2766
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Originally Posted by clevermax View Post
I like that hexagonal bokeh for background lights than the perfect round one:
Hehe the pic you posted is heptagonal the shape will be determined by the number of aperture blades. Cheapo 50mm f/1.8 with 5 blades creates a pentagon, which looks very harsh. Better lens with 12 circular aperture blades create OOF circles more or less resembling a circle.

Do a search on iris blur, wish to try it once
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Old 13th January 2010, 15:43   #2767
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@sunnyBoi
Nice pics and yeah,me too love those OOF circles in my pictures! This is from a Nikon 70-200 @f2.8.
The DSLR Thread-4271396902_50320be425_b.jpg
Regards,
TG.
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Old 13th January 2010, 15:57   #2768
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Now what would we call this, bokeh or DOF ?
102mm, F/4.8, 1/125 sec, ISO-100, Exp +0.7 step
The DSLR Thread-dove.jpg
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Old 13th January 2010, 16:09   #2769
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Quote:
Originally Posted by SunnyBoi View Post
Hehe the pic you posted is heptagonal
Yes, I actually meant that thing with 7 sides

This was taken at f/5.6 so the heptagonal shape. In the max aperture of that lens, (f/4) the blades retract beyond the perfect circular opening so I get perfect round bokeh.

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Originally Posted by shajufx View Post
Now what would we call this, bokeh or DOF ?
102mm, F/4.8, 1/125 sec, ISO-100, Exp +0.7 step
Attachment 264577
Nice bokeh. It is not DOF, it is 'shallow DOF'. Read it as the expansion of that term then it will make sense

Last edited by clevermax : 13th January 2010 at 16:13.
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Old 13th January 2010, 16:40   #2770
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@shajufx: Yes this is Bokeh where the back ground is totally blurred. But for an example of good boken see Torqueguru's dog picture in the previous post where the oof areas are a lot smoother and rounded unlike the hard edges as seen in your picture.
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Old 13th January 2010, 18:02   #2771
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Originally Posted by SPARKled View Post
where the oof areas are a lot smoother and rounded.....
I believe the apperture makes that huge difference. My shot is with a 55-200 VR which is 6 times cheaper lens than 70-200 LOL!! I am seriously considering the Sigma 50mm 1.4 EX DG HSM. Hope I can feel the quality difference from an average kit lens !

Last edited by shajufx : 13th January 2010 at 18:08.
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Old 13th January 2010, 18:03   #2772
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Phew!! This thread is quite informative and very confusing

I am getting a Canon T1i (500D) as a gift from my Elder Brother and have been using SX 10 IS for the past 9 months. Now what i need is a link to a tutorial which explains all the terms like Aperture/ISO/Shutter Speeds/Compression and their Usage. Please if anybody has links to a tutorial which is easy on the vocabulary (as in not too many hard words for a beginner) would be appreciated.

Thanks guys..
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Old 13th January 2010, 18:35   #2773
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Originally Posted by The_Warrior View Post
Phew!! This thread is quite informative and very confusing

I am getting a Canon T1i (500D) as a gift from my Elder Brother and have been using SX 10 IS for the past 9 months. Now what i need is a link to a tutorial which explains all the terms like Aperture/ISO/Shutter Speeds/Compression and their Usage. Please if anybody has links to a tutorial which is easy on the vocabulary (as in not too many hard words for a beginner) would be appreciated.

Thanks guys..
You can check Dpreview, they have a comprehensive guide for beginners into DSLR's.
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Old 13th January 2010, 19:52   #2774
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@The_Warrior

This is strictly in my opinion. I am also in the process to select my first DSLR ( used quite a few but this will be my own one ) . I have compared the 500D samples and 450D samples. Although , you will be getting a better screen ( 920K dots ) , more resolution on paper ( 14+ ) , but if you compare the photographs from both these cameras , the picture quality in terms of per pixel sharpness and high ISO noise handling is way better in 450D. The quality of images taken by 450D is still quite unmatched by it's peers and competitors in the same price segment.
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Old 13th January 2010, 20:39   #2775
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Quote:
Originally Posted by clevermax View Post
Yes, I actually meant that thing with 7 sides

This was taken at f/5.6 so the heptagonal shape. In the max aperture of that lens, (f/4) the blades retract beyond the perfect circular opening so I get perfect round bokeh.

Hmm after reading your point I revisited some older pics that I took. This pic was of an awesome guitarist who was practising on the side of the beach. Good thing i was drunk, If i weren't drunk i'd never approach him lol. but really enjoyed a live performance

So yeah now i believe OOF circles will be round at max aperture. The lights are from far away ships, pic was taken from the beach. excuse the crappy quality, somehow noise and ugly artifacts have creeped in when I resized the pic

The DSLR Thread-_mg_0645.jpg


Quote:
Originally Posted by worldcrawler View Post
@The_Warrior

This is strictly in my opinion. I am also in the process to select my first DSLR ( used quite a few but this will be my own one ) . I have compared the 500D samples and 450D samples. Although , you will be getting a better screen ( 920K dots ) , more resolution on paper ( 14+ ) , but if you compare the photographs from both these cameras , the picture quality in terms of per pixel sharpness and high ISO noise handling is way better in 450D. The quality of images taken by 450D is still quite unmatched by it's peers and competitors in the same price segment.
+1. Colleague bought a 500D and night time pics were better on my 450D compared to his 500D with my lens and when I took pic from both cams.

Last edited by SunnyBoi : 13th January 2010 at 20:40.
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