Who uses the STF mode?

[jamesdak]

I am wondering who has tried this feature and what impressions they have of it? THanks,

 

[Magnus Wedberg]

I am wondering who has tried this feature and what impressions they have of it? THanks,

Deja vu! I answered the question in a post just the other day:

I have never taken an image with the STF mode where it is used as it "should be" -- however, I have used it for creative effects. See this image for a handheld panning shot with STF, and this one for an example of how a moving subject can be enhanced by it. The real purpose of the STF mode is to simulate the effects of the 135/2.8 [T4.5] Smooth Trans Focus lens with any lens -- this is done by using multiple exposures on the same image with smaller and smaller apertures and thus averaging the aperture shape over the exposure, leading to better bokeh.

How nice when I can plug my site with three links to pics/articles in the same posting!

I have actually never used the STF mode for its intended purpose (better bokeh), but I expect it to work well.

 

[deslim27]

I have actually never used the STF mode for its intended purpose (better bokeh), but I expect it to work well.

Provided the subject is still thru out the 7 exposure :bsmilie:

BTW Magnus, do you have any idea what was changed during the 7 exposure? Could it be the aperture?

 

[Magnus Wedberg]

Provided the subject is still thru out the 7 exposure :bsmilie:

Exactly! If the subject moves in any way, the image will look "creative" whether you want it or not

BTW Magnus, do you have any idea what was changed during the 7 exposure? Could it be the aperture?

Yes, it starts with a large aperture and closes it a little for every exposure, to simulate a round aperture and the apodization filter. It doesn't change the shutter speed between exposures as far as I know. Interesting technology for sure! Incidentally, one can see the effect of the aperture in one of the images I posted, namely this one; as I have panned during the exposure, the land silhouettes indicate the difference in exposure that comes from closing the aperture between every shot...

 

[deslim27]

Exactly! If the subject moves in any way, the image will look "creative" whether you want it or not
Yes, it starts with a large aperture and closes it a little for every exposure, to simulate a round aperture and the apodization filter. It doesn't change the shutter speed between exposures as far as I know. Interesting technology for sure! Incidentally, one can see the effect of the aperture in one of the images I posted, namely this one; as I have panned during the exposure, the land silhouettes indicate the difference in exposure that comes from closing the aperture between every shot...

Yeah, I've read your article before. Just one complaint, the MLU should be activate during the 7 exposure.. Pip-Zip-Pah x 7 time is very noisy.. should be Pip-Zip-Zip-Zip-Zip-Zip-Zip-Zip-Pah . The image can be captured faster and less noisy and vibration.

 

[Magnus Wedberg]

Just one complaint, the MLU should be activate during the 7 exposure.. Pip-Zip-Pah x 7 time is very noisy.. should be Pip-Zip-Zip-Zip-Zip-Zip-Zip-Zip-Pah . The image can be captured faster and less noisy and vibration.

Yes. For situations with bad light (long shutter speeds), the aperture could even be varied during exposure. Minolta cameras need a complete shooting cycle however to recock the shutter/mirror; that is the reason for no true mirror lock up. The mirror operation is a part of a full mechanical cycle and cannot be separated from the rest, so to speak. I agree that this is somewhat of a limitation.

 

[deslim27]

Yes. For situations with bad light (long shutter speeds), the aperture could even be varied during exposure. Minolta cameras need a complete shooting cycle however to recock the shutter/mirror; that is the reason for no true mirror lock up. The mirror operation is a part of a full mechanical cycle and cannot be separated from the rest, so to speak. I agree that this is somewhat of a limitation.

Thanks Magnus, just learnt something new from you.. mirror is part of the mechanical cycle. Hope something can be done on the new 7D!

 

[yeocolin]

Yes. For situations with bad light (long shutter speeds), the aperture could even be varied during exposure. Minolta cameras need a complete shooting cycle however to recock the shutter/mirror; that is the reason for no true mirror lock up. The mirror operation is a part of a full mechanical cycle and cannot be separated from the rest, so to speak. I agree that this is somewhat of a limitation.

Hi Magnus,
Could you give us the url to other articles you've written? Thanks.

 

[deslim27]

Hi Magnus,
Could you give us the url to other articles you've written? Thanks.

http://www.magnuswedberg.com/

His website mah..

 

[-7-]

:thumbsup: :thumbsup: 2 thumbsup for the overall web design... as well as some of the photos... Magnus

Cheers!