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Lens Turbo with Canon FD 15mm Fisheye, FD 17mm and FD 28/2
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PostPosted: Wed Jul 03, 2013 2:39 pm    Post subject: Lens Turbo with Canon FD 15mm Fisheye, FD 17mm and FD 28/2 Reply with quote
This is from my own testing, sharing initial results with anyone who´s interested...

Setup: Sony NEX-7 with Lens Turbo and FD 15/2.8 Fisheye, FD 17/4, FD 28/2.



Continued in next post ...


PostPosted: Wed Jul 03, 2013 2:43 pm    Post subject: Reply with quote
Canon FD 17/4, full frame at f4


Canon FD 17/4, center at f4


Canon FD 17/4, border at f4


Canon FD 17/4, full frame at f8


Canon FD 17/4, border at f8


Continued in next post ...


PostPosted: Wed Jul 03, 2013 2:49 pm    Post subject: Reply with quote
Canon FD 15/2.8 Fisheye, full frame at f2.8


Canon FD 15/2.8 Fisheye, center at f2.8


Canon FD 15/2.8 Fisheye, border at f2.8


Canon FD 15/2.8 Fisheye, border at f8


Continued in next post ...


PostPosted: Wed Jul 03, 2013 2:52 pm    Post subject: Reply with quote
Canon FD 28/2, full frame at f2


Canon FD 28/2, center at f2


Canon FD 28/2, border at f2


Canon FD 28/2, border at f4


Canon FD 28/2, border at f8


Last edited by Bille on Wed Jul 03, 2013 3:04 pm; edited 1 time in total


PostPosted: Wed Jul 03, 2013 3:03 pm    Post subject: Reply with quote
you should correct "center" with "border" on the last two pics: i starte watching pics from below and thought "that's awful!", then I saw it was a corner.


PostPosted: Wed Jul 03, 2013 3:03 pm    Post subject: Reply with quote
Note to self...

Cons
- Generally poor corner performance, issue when printing large
- Stopping down the adapted lens wont cure inherent aberrations of the "Turbo"

Pros
- Wide is wide again
- Corner softness less of a problem for portraits and / or small prints
- Build quality appears quite good, "Turbo" is also thinner than a regular FD - NEX adapter


PostPosted: Wed Jul 03, 2013 3:04 pm    Post subject: Reply with quote
Aanything wrote:
you should correct "center" with "border" on the last two pics: i starte watching pics from below and thought "that's awful!", then I saw it was a corner.


True, thanks


PostPosted: Wed Jul 03, 2013 3:11 pm    Post subject: Reply with quote
Bille wrote:
Note to self...

Cons
- Generally poor corner performance, issue when printing large
- Stopping down the adapted lens wont cure inherent aberrations of the "Turbo"

Pros
- Wide is wide again
- Corner softness less of a problem for portraits and / or small prints


That's exactly the impression I got by looking at many samples around. It seems a really nice tool for some (or most of, according to one's style and needs) situations.
In the posts above you put the lens turbo under some stress: landscapes with relatively fast ultra wides is probably the less favorable situation for it, but pics came out quite well.
Not a true substitute for a FF camera, but I see how it can be useful and fun for some.


PostPosted: Fri Jul 05, 2013 6:03 pm    Post subject: Reply with quote
Thanks for sharing.
All the evidence on the LT point in the same direction.


PostPosted: Fri Jul 05, 2013 8:31 pm    Post subject: Reply with quote
Looks ok, I wouldn't mind more shots with the 17 with and without the LT, I have an SSC version.
I've been tempted to buy a LT or SB for use with my SSC 24/1.4 Asph. but I think I'll wait till next year and see if a FF materializes and put the funds towards that.


PostPosted: Fri Jul 05, 2013 8:51 pm    Post subject: Reply with quote
Thanks for sharing this, just proves that this Turbo thing is a waste of time, the bits of the frame you are gaining back through it's use are reduced in quality so much that you'd be better off without them. I'll stick to stitching multiple images when I want a wider view than my ultrawide lenses can provide on APS-C.


PostPosted: Fri Jul 05, 2013 9:08 pm    Post subject: Reply with quote
Thanks a lot for sharing your experiences!

Danke!


PostPosted: Sat Jul 06, 2013 5:41 am    Post subject: Reply with quote
iangreenhalgh1 wrote:
Thanks for sharing this, just proves that this Turbo thing is a waste of time, the bits of the frame you are gaining back through it's use are reduced in quality so much that you'd be better off without them. I'll stick to stitching multiple images when I want a wider view than my ultrawide lenses can provide on APS-C.


The Speedbooster seems to be of much higher optical quality than the Lens Turbo, and it should since its double the price,
And you really need to compare a FF sensor with these lenses against the focal reducers that have come out recently.

Here's lots of pics and discussion about the SB, there are some great samples that show it can be sharp all the way to the corner.
http://www.fredmiranda.com/forum/topic/1181879/11 (page 12/45)

Here's an awesome sample from page 20 by serhan_ using a CZJ 135/3.5 (I hope no one minds me posting someone else's picture)
This is the post http://www.fredmiranda.com/forum/topic/1181879/19#11323416


PostPosted: Sat Jul 06, 2013 6:37 am    Post subject: Reply with quote
Lightshow wrote:

Here's lots of pics and discussion about the SB, there are some great samples that show it can be sharp all the way to the corner.
http://www.fredmiranda.com/forum/topic/1181879/11 (page 12/45)


Thanks for the link but I see hardly any wide shots (or full resolution corners) for comparison.


PostPosted: Sat Jul 06, 2013 7:09 am    Post subject: Reply with quote
I'm just now reading through the thread, I was avoiding it so I wasn't tempted, but.... I think I may lose that battle.
I believe the SB was designed to work primarily with 28-135 lenses, but I'm sure there are others outside that range that will work just fine.

I'll post a link of any sharp wides on a SB when I come across them.


PostPosted: Sat Jul 06, 2013 12:58 pm    Post subject: Reply with quote
Lightshow wrote:

I believe the SB was designed to work primarily with 28-135 lenses,


The longest focal length I have in FD is 50mm. Will post some samples when I find the time.


PostPosted: Sat Jul 06, 2013 1:59 pm    Post subject: Reply with quote
Here is from the FD 50/1.8 at f1.8, processed in Silver Efex



PostPosted: Sat Jul 06, 2013 2:15 pm    Post subject: Reply with quote
Lightshow wrote:
iangreenhalgh1 wrote:
Thanks for sharing this, just proves that this Turbo thing is a waste of time, the bits of the frame you are gaining back through it's use are reduced in quality so much that you'd be better off without them. I'll stick to stitching multiple images when I want a wider view than my ultrawide lenses can provide on APS-C.


The Speedbooster seems to be of much higher optical quality than the Lens Turbo, and it should since its double the price,
And you really need to compare a FF sensor with these lenses against the focal reducers that have come out recently.

Here's lots of pics and discussion about the SB, there are some great samples that show it can be sharp all the way to the corner.
http://www.fredmiranda.com/forum/topic/1181879/11 (page 12/45)

Here's an awesome sample from page 20 by serhan_ using a CZJ 135/3.5 (I hope no one minds me posting someone else's picture)
This is the post http://www.fredmiranda.com/forum/topic/1181879/19#11323416


That's interesting, I'll take a look, cheers.


PostPosted: Sat Jul 06, 2013 10:17 pm    Post subject: Reply with quote
Canon FD 35/2 at f2

´

Last edited by Bille on Wed Jul 10, 2013 10:08 am; edited 1 time in total


PostPosted: Sat Jul 06, 2013 11:32 pm    Post subject: Reply with quote
That would be a nice shot if it had a bit more dof, does this booster reduce the dof?


PostPosted: Fri Sep 26, 2014 11:47 pm    Post subject: Re: Lens Turbo with Canon FD 15mm Fisheye, FD 17mm and FD 28 Reply with quote
Bille wrote:
This is from my own testing, sharing initial results with anyone who´s interested...

Setup: Sony NEX-7 with Lens Turbo and FD 15/2.8 Fisheye, FD 17/4, FD 28/2.



Continued in next post ...

Sorry to bring this up but I just got this lens with the Lens Turbo 2 and you cannot turn it all the way to infinity focus mark. It stops a lot sooner and I have 3 copies of the LT2. Arent you experiencing the same thing?


PostPosted: Sat Sep 27, 2014 1:36 am    Post subject: Reply with quote
For some reason I cant see the images (requested page has been removed), but was this with the Lens Turbo II ? I have had very good results with the Minolta 24 - 35mm zoom and am currently trying to get it to work with 17mm f4 - except that the aperture pin is too long and I'm not sure how to safely shorten it.
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