Reverse 28mm with K10D (Flower)

[longko]

The cheapo reverse k mount > 52mm adapter came yesterday, so bring the K10D out to test it with old Sigma 28mm f2.8 Mini Wide II. Since I'd haven't done floral macros in abt 1 yr, so I made this the theme for the test. Think I'm pretty rusty liao^^;

[longko]

[hjbyeo]

*Vomit Blood* I think I better don't post too much Macro shots.. looking at these standards set by Longko!

[longko]

Originally Posted by hjbyeo *Vomit Blood* I think I better don't post too much Macro shots.. looking at these standards set by Longko!

Trust me if I can do it, everyone can with some practise^^ Take more shots, post more and get more feedbacks, you'll improve faster this way.

[molmotta]

Originally Posted by hjbyeo *Vomit Blood* I think I better don't post too much Macro shots.. looking at these standards set by Longko!

I nose bleed liao...

[billitone]

Colors and sharpness are great.

Thanks for sharing these.
Keep 'em coming!

[longko]

Originally Posted by molmotta I nose bleed liao...

If we ever go for macros I'll remember to bring extra tissue.

Originally Posted by billitone Colors and sharpness are great. Thanks for sharing these. Keep 'em coming!

Thx. These are all the flowers that I took during the test.^^;

[hjbyeo]

I particularly like shot no. 2!

[istDeS]

That is really close Longko.

So close that first thing that comes to my mind when i saw the last 2 pics, the anther looks similar to a fried fish finger.

[longko]

Originally Posted by hjbyeo I particularly like shot no. 2!

Thx. That's one of my fav too^^

Originally Posted by istDeS That is really close Longko. So close that first thing that comes to my mind when i saw the last 2 pics, the anther looks similar to a fried fish finger.

Thx^^ Ya I est. it as abt 2.5:1 macro. I like this result better than what I get with Raynox. The adapter with shipping is abt US$10+ Any old 28mm would do, on ebay should be able to get for US$50 with shipping.

That flower is the same as what creampuff took a while back;
http://www.clubsnap.com/forums/showp...postcount=3185

[hjbyeo]

Originally Posted by longko Thx. That's one of my fav too^^ Thx^^ Ya I est. it as abt 2.5:1 macro. I like this result better than what I get with Raynox. The adapter with shipping is abt US$10+ Any old 28mm would do, on ebay should be able to get for US$50 with shipping. That flower is the same as what creampuff took a while back; http://www.clubsnap.com/forums/showp...postcount=3185

Different perspective... flowers' portraiture... and beautiful composition from Creampuff too!

OK ... where is this location again? Toa Payoh?

[longko]

Originally Posted by hjbyeo Different perspective... flowers' portraiture... and beautiful composition from Creampuff too! OK ... where is this location again? Toa Payoh?

Ya Toa Payoh Town Park where most of all my testings are done I really need to find time to go SBG again. Really missed taking macros there

[Gengh]

Woah man.... Time to get myself one of these reverse adapters! Where's the best place to get one for K mount? I probably need a step up ring too....

[longko]

Originally Posted by Gengh Woah man.... Time to get myself one of these reverse adapters! Where's the best place to get one for K mount? I probably need a step up ring too....

If u want a K-mount <> 52mm adapter there's one in b&s
http://www.clubsnap.com/forums/showt...=371416&page=2

step-up ring CP should have stock

[dnaxe]

lovely longko.

what are the maths for reverse adaptors? (e.g. how do you work out magnification, working distance?)

[longko]

Originally Posted by dnaxe lovely longko. what are the maths for reverse adaptors? (e.g. how do you work out magnification, working distance?)

lol dunno. never was gd with theories. I recall it as the shorter the FL the higher the magnification. All reverse lens should give u more than 1:1 macro

[creampuff]

Very nice macro shots longko. I see the 28mm is giving you good service.
I have another copy of the same lens so I just might try it reversed as well one day.
My old eyes are just as bad. Hmmm Lasik might be an option (better lens on this body is better than a better lens on a camera body)

[longko]

Originally Posted by creampuff Very nice macro shots longko. I see the 28mm is giving you good service. I have another copy of the same lens so I just might try it reversed as well one day. My old eyes are just as bad. Hmmm Lasik might be an option (better lens on this body is better than a better lens on a camera body)

Thx. For me now is, if I dun find a gd use for a lens, I'll let it go. So the reverse attempt was for me to keep the lens or let go of it. Looks like I'll keep it lol.

U are lucky that Lasik is still gd for u, for me it'll still leave me with 300-400 degree. Which doesn't seems worth going for^^;

[longko]

Originally Posted by dnaxe lovely longko. what are the maths for reverse adaptors? (e.g. how do you work out magnification, working distance?)

OK I managed to dig out something. Here an est. guide on old MF reverse lens reproduction ratio.

20mm abt 3.4:1 Macro
24mm abt 2.5:1 Macro
28mm abt 2.2:1 Macro
35mm abt 1.6:1 Macro
50mm abt 1.1:1 Macro but some will go up to 2:1 Macro

Above just a guide and will change based on diff lens.

[seefei]

longko - good work. just wonder how you hold the stem of the flower So... steady? i tried with the tamron 90 which i recently bought. the results are nothing close to your master piece with the same lens. main prob seems to be the focus which i cant get it right. will practise more but just want to know if there is something else that i need to do to get the sharp focus.

like creampuff, i also got bad eyesight. issit the eyes too?