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-   -   KM 28-75mm f/2.8 D Bokeh! (https://forums.steves-digicams.com/sony-alpha-dslr-konica-minolta-dslr-sony-slt-77/km-28-75mm-f-2-8-d-bokeh-92799/)

maxxum7d Jun 17, 2006 4:22 PM

1 Attachment(s)
This is a cropped section from a full L-size image. Everything is of the same size as on the real file.

Exif info:

aperture: 2.8
focal length: 45mm (35mm equivalent 67mm)
ISO: 100



rduve Jun 20, 2006 4:55 AM

As they say, everything is relative. I am not sure what this is supposed to demonstrate if not compared to something else. Of course, the KM 28-75 f/2.8 is a great lens. I have gotten very good results. However, I also made the point in another string that it does not clearly outshine the Tamron 28-300, in fact it is probably made by Tamron as JimC said before. But this lonecrop of anout-of-focus background area (taken at f2.8 the image naturally has a very small DoF), not contrasting it to anything else, does not tell anybody anything.

Rainer

meanstreak Jun 20, 2006 6:24 AM

maxxum7d wrote:
Quote:

This is a cropped section from a full L-size image. Everything is of the same size as on the real file.

Exif info:

aperture: 2.8
focal length: 45mm (35mm equivalent 67mm)
ISO: 100



I'm not sure either what the intent of this example is. Is this is background of a shot with thesubject cropped outor were you just trying to take a picture of trees and it didn't focus?

maxxum7d Jun 21, 2006 10:39 PM

This is actually a background. The foreground was in perfect focus.

meanstreak wrote:
Quote:

maxxum7d wrote:
Quote:

This is a cropped section from a full L-size image. Everything is of the same size as on the real file.

Exif info:

aperture: 2.8
focal length: 45mm (35mm equivalent 67mm)
ISO: 100



I'm not sure either what the intent of this example is. Is this is background of a shot with thesubject cropped outor were you just trying to take a picture of trees and it didn't focus?

rduve Jun 21, 2006 11:38 PM

Well, in that case there is nothing wrong whatsoever with the lens.

Rainer

nooner Jun 21, 2006 11:59 PM

Some people have complained about the bokeh of 28-75. It's a matter of taste IMHO.

rduve Jun 22, 2006 12:05 AM

What does the term "bokeh" mean?

Rainer

rduve Jun 22, 2006 12:11 AM

I just answered my own question: http://www.kenrockwell.com/tech/bokeh.htm

That's something I have never known about or examined. I guess one never stops learning. I don't have much to compare it to, but I will start looking for different "bokeh" behaviour from now on in my comparison shots.

Rainer

rduve Jun 22, 2006 1:14 AM

That bokeh looks like a bouquet to me. Picturesque!

:cool:



Jun 22, 2006 12:13 PM

I mentioned "bokeh" to a friend of mine who is a Pro. He's been using everything from $16,000 Plate View cameras to the best large format cameras & lenses for over 30 years. He's probably forgotten more about photography than I'll ever learn. When I mentioned "bokeh", he said something like "WTF is that"?

My point is, don't get so caught up in such tiny details that you forget to use your tools to improve your skills. If somebody is so concerned about how your background highlights aren't perfectly round, they need to find another hobby...


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