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Uran-27 2.5/100mm aerial lens in the park
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PostPosted: Mon Jun 19, 2017 5:33 pm    Post subject: Uran-27 2.5/100mm aerial lens in the park Reply with quote
Got this lens today and took it to the park. All shot at f2.5

















sharp, but in a very pleasant way, not too high contrast, needs custom white balance
due to special coating for longer wavelengths. Very prone to flare, so needs sunshade
(did not use). Great bokeh (busy or creamy doable). Good lens for portraits for sure!

Full set is here: https://www.flickr.com/photos/kds315/albums/72157683211296270

Last edited by kds315* on Mon Jun 19, 2017 7:51 pm; edited 4 times in total


PostPosted: Mon Jun 19, 2017 5:34 pm    Post subject: Reply with quote
Part II a few other shots to compare...





Very little CA, good sharpness at infinity (what it was designed for)


PostPosted: Mon Jun 19, 2017 9:28 pm    Post subject: Reply with quote
Like 1 Like 1 Like 1 As usual,but "oh my" it has flare when pointed to Sunlight?You sell it to me Cheap as I only shoot in overcast skies. Wink


PostPosted: Mon Jun 19, 2017 9:37 pm    Post subject: Reply with quote
kryss wrote:
Like 1 Like 1 Like 1 As usual,but "oh my" it has flare when pointed to Sunlight?You sell it to me Cheap as I only shoot in overcast skies. Wink


Thanks Chris! It flares in many situations, not just in sunlight. And I never said I would sell it, too nice it is .. Wink


PostPosted: Tue Jun 20, 2017 8:31 am    Post subject: Reply with quote
Wow!
Like 1 Like 1 Like 1
I've always been intrigued by the aerial lenses. Amazing sharpens at all distances!
Lovely flower photos, as usually, Klaus. I like the way you mastered the lens, especially in the photos where the bokeh becomes a little busy - it doesn't do it in a nervous way, it doesn't grasp the attention from the main subject. It's delicacy of the way the lens renders you put in value nicely.

Another special lens with a well balanced character to look after! Smile


PostPosted: Tue Jun 20, 2017 3:47 pm    Post subject: Reply with quote
dan_ wrote:
Wow!
Like 1 Like 1 Like 1
I've always been intrigued by the aerial lenses. Amazing sharpens at all distances!
Lovely flower photos, as usually, Klaus. I like the way you mastered the lens, especially in the photos where the bokeh becomes a little busy - it doesn't do it in a nervous way, it doesn't grasp the attention from the main subject. It's delicacy of the way the lens renders you put in value nicely.

Another special lens with a well balanced character to look after! Smile


Thank you Dan! Indeed it is a bit tricky and one ha sto pay attention to the background or it gets rather busy - but some seem to be after that, so it is doable if so wanted. For portraits it would allow a very smooth transition it seems and I expect very nice skin tones, as it is not overly sharp wide open (which it gets stopped down a bit).

Just back from my mechanic where we bettered the rarther clumsy and rough M42 conversion (and secured the lens unscrewing itself and falling out!), now I it will work much smoother and safer.


PostPosted: Tue Jun 20, 2017 4:09 pm    Post subject: Reply with quote
Nice looking!


PostPosted: Tue Jun 20, 2017 4:34 pm    Post subject: Reply with quote
Nice neon-look in #1


PostPosted: Wed Jun 21, 2017 3:06 am    Post subject: Re: Uran-27 2.5/100mm aerial lens in the park Reply with quote
Very nice!


PostPosted: Thu Jun 22, 2017 11:35 pm    Post subject: Reply with quote
Thanks guys!

Here a few carpenter bee shots on muscat sage with it... [50% crops]







for a fully open lens, quite some sharpness!


PostPosted: Thu Jun 22, 2017 11:50 pm    Post subject: Reply with quote
For an aerial lens - an appropriate subject!
Anyway, good luck or good technique, getting a bee in flight at f/2.5


PostPosted: Fri Jun 23, 2017 12:15 am    Post subject: Reply with quote
luisalegria wrote:
For an aerial lens - an appropriate subject!
Anyway, good luck or good technique, getting a bee in flight at f/2.5


Guess I was lucky indeed, but the GH4 also helps with electronic shutter 1/16.000...


PostPosted: Fri Jun 23, 2017 4:22 am    Post subject: Reply with quote
kds315* wrote:
Thanks guys!

Here a few carpenter bee shots on muscat sage with it... [50% crops]

for a fully open lens, quite some sharpness!


Nice photos. I need to grow that again so the carpenter bees will come back to
my house.


PostPosted: Fri Jun 23, 2017 4:31 am    Post subject: Reply with quote
uddhava wrote:
kds315* wrote:
Thanks guys!

Here a few carpenter bee shots on muscat sage with it... [50% crops]

for a fully open lens, quite some sharpness!


Nice photos. I need to grow that again so the carpenter bees will come back to
my house.
Carpenter bees should BUILD you a house. Wink

Amazing photos. My guess 15% lens 85% photographer.


PostPosted: Fri Jun 23, 2017 7:23 am    Post subject: Reply with quote
Thank you guys!!

Con sidering that this URAN-27 "conversion" to M42 allowed the lens to unscrew from its
crude russian helicoid and could fall out, I too was surprised about the results I got Wink
[my mechanic and I found a solution to fix that issue...]

Justa word about that aerial lens: It is optimized for longer wavelengths and produces odd colors
if used with normal whitebalance. I made a custom one which eleminated that problem partially...


PostPosted: Fri Jun 23, 2017 11:38 am    Post subject: Reply with quote
Great results! You have a good copy of it, congrats! Like 1


PostPosted: Fri Jun 23, 2017 1:56 pm    Post subject: Reply with quote
BurstMox wrote:
Great results! You have a good copy of it, congrats! Like 1


Merci bien Pierre!


PostPosted: Fri Jun 23, 2017 2:51 pm    Post subject: Reply with quote
wow totally excellent Like 1


PostPosted: Fri Jun 23, 2017 10:56 pm    Post subject: Reply with quote
kds315* wrote:
Justa word about that aerial lens: It is optimized for longer wavelengths and produces odd colors
if used with normal whitebalance. I made a custom one which eleminated that problem partially...


Interesting. I knew that was the case with the earlier 100/2.5 Uran-10, thought it wasn't for the Uran-27. Oh, well. Live and learn.


PostPosted: Sat Jun 24, 2017 4:15 am    Post subject: Reply with quote
danfromm wrote:
kds315* wrote:
Justa word about that aerial lens: It is optimized for longer wavelengths and produces odd colors
if used with normal whitebalance. I made a custom one which eleminated that problem partially...


Interesting. I knew that was the case with the earlier 100/2.5 Uran-10, thought it wasn't for the Uran-27. Oh, well. Live and learn.


The opposite actually Dan, Urans-10 is not coated this way I was told by its owner Wink


PostPosted: Sat Jun 24, 2017 11:14 am    Post subject: Reply with quote
Klaus, see:

http://www.photohistory.ru/1207248190024779.html

and

http://www.photohistory.ru/index.php?pid=1207248190090015

Cheers,

Dan


PostPosted: Sun Jun 25, 2017 6:48 pm    Post subject: Reply with quote
danfromm wrote:
Klaus, see:

http://www.photohistory.ru/1207248190024779.html

and

http://www.photohistory.ru/index.php?pid=1207248190090015

Cheers,

Dan


Thanks Dan, confirms perfectly my stament!


PostPosted: Mon Jun 26, 2017 2:19 am    Post subject: Reply with quote
kds315* wrote:
danfromm wrote:
Klaus, see:

http://www.photohistory.ru/1207248190024779.html

and

http://www.photohistory.ru/index.php?pid=1207248190090015

Cheers,

Dan


Thanks Dan, confirms perfectly my stament!


I don't think so. Look again.

Per Google Translate, the Uran-10:

Quote:
Long-focus lens with a field of view angle of 61 ° (in other versions - from 56 ° to 62 °) for cameras with a frame size of 8x8 cm. Resolution (center / edge) - 32/10 l / mm; According to other data [104, 43.02b] - 42/14. The lens is corrected for the orange-red area and is applied with filters ZhS-18, OS-12, KS-14.


and the Uran-27:

Quote:
A long-focus lens with a diagonal angle of 54 ° for cameras with a 8x8 cm frame format (for a 70x80mm frame). Components / lenses - 5/7. The lens is corrected for a wide blue-red spectral region and can be applied without a filter.


PostPosted: Mon Oct 01, 2018 9:13 pm    Post subject: Reply with quote
just bought an uran-27 from ebay, hopefully in good condition...

what’s the exact flange distance? read somewhere it’s around the L39 flange (28.80mm). going to adapt it for a mirrorless camera (canon ef-m mount 18mm); I know it’s a bit of waste of glass...

just found this focus helicoid (27 to 59mm) which could be useful but I don’t know the maximum focus distance (closest) allowed with this lens.
http://vi.raptor.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=261261216343&category=30059&pm=1&ds=0&t=1537512922000&ver=0&cspheader=1


PostPosted: Thu Oct 04, 2018 9:50 pm    Post subject: Reply with quote
The hardest part in the adaptation of this lens is to fix on it a M42 mount, because it has a big rear glass. Focal flange is longer than L39, you can even use it on reflex camera if the lens is well adapted.
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