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2020年04月08日 イイね!

A new idea on an old lens

A new idea on an old lensModified Konica Hexanon 48mm/2.0 on SONY E-mount was completed with setting helicoid stopper adequately, the lens element had been equipped on Konica EE matic Range Finder 60 years old camera. Though rotating helicoid would not be extended till falling down, setting some mechanical stopper applies safety feeling in actual use. Trifles as it is, piled trifles are not trifle but worth doing.

I found out a grouped lens element, not a minute was required to remember how it comes here, yes, it is the rear group of Minolta Tele- Rokkor 135mm/2.8 and front group was lost because of mold invasion. As we know, rear group of these kind of lens construction is so designed to eliminate several aberration, so residual lens element does not play any part of performance. This is why this miserable lens part has been deserted here in my junk box.
A curiosity comes out in my mind that what will happen if this lens is set on E-mount? Then, I did it actually before pondering.
Nothing but poor and inferior pics could be obtained as a matter of fact, utilizing only an aberration correcting lens construction part with opposite direction, the result was reasonable at all.
All the engineer in designing lens construction seek and try to construct better one all the time, the better, the better.
From a completely different side point of view, this widow lens shows some different way of expression, not poor or inferior but just different, so I regard this! I feel some Fantagista in this marvelous jewelry. I would like to apply this new weapon on Table Photo field from now, let's see what'll happen.





Posted at 2020/04/08 11:19:44 | トラックバック(0) | 日記
2020年04月07日 イイね!

Who and where our enemy is in WWⅢ?

Who and where our enemy is in WWⅢ?The Sakura, Cherry blossom season comes around periodically as usual and it will soon diminish, but the unprecedented disaster by CV does not end.
Prime Minister Abe will declare "Contingency" today. The unusual state would last as long as 1 month till the end of consecutive holidays next month. What we can do now is not to go out, how come?
Even a strongest US aircraft carrier might be defeated by an invisible enemy? It's War Time now? But, the enemy is not a humankind nor specific strange nations nor different religious group. The enemy for all of us is clear at all, now is the time to be a Single Unity!





Posted at 2020/04/07 08:41:52 | トラックバック(0) | 日記
2020年04月06日 イイね!

Minolta Rokkor-PG 45mm/1.8 lens test

Minolta Rokkor-PG 45mm/1.8 lens testAs Minolta Rokkor-PG 45mm/1.8 has completed, I went for the lens test around noon today, destination was Inagawa Sports Center. Very few pedestrian were observed there as I imagined. Pics obtained today must the final Cherry Blossom this year. The results obtained today is fully acceptable to me with no complaints. Being satisfied by Good performances at all.
Everything is shrinking everywhere, how come?
Though my friend in medical field complains that no way but to hospital, he is happy because he has a purpose to spend time contributing to the society.
The plague that spreads all over the world now obliged Japanese Government to declare "Emergency" in few days.
The annoying story should come to an end ASAP, so I hope.

Posted at 2020/04/06 17:29:07 | トラックバック(0) | 日記
2020年04月06日 イイね!

Old Minolta Rokkor-PG 45mm/1.8 completion

Old Minolta Rokkor-PG 45mm/1.8 completionAuthorities does not allow us go out freely now in Japan. CV shows it's potential to expand more all over the world.
As proverb says, "The devil finds work for idle hand to do".
Minolta Rokkor-PG 45mm/1.8 lens on SONY E-mount has made progress, rotating helicoid stopper was applied inside for safety. Just setting 1.7mm diameter small screw on helicoid inner barrel and gluing was enough. Though the helicoid is seldom to expanded utmost in ordinary use, this countermeasure for safety is effective for actual outside use. Utilizing it's original helicoid construction with 10mm lens element extension permits 15 cm close up shooting.
As mentioned before, the front element was left undone the maintenance, as an emergency measure, forming groove for loosening tool made it possible to disassemble fully for lens cleaning resulting more transparency.
This lens requires more care for cutting halation compared with Konica Hexanon 45mm/1.8 produced at similar period of time. Once the condition is fairly set, resolution and sharpness are superb at all. Color resolution is neutral, Red color is not so outstanding as Konica Hexanon.
Decoration on camera body and hood is purposed to camouflage not to be payed attention at the shooting moment.




Posted at 2020/04/06 07:04:32 | トラックバック(0) | 日記
2020年04月04日 イイね!

Cherry blossom at Okawa Osaka

Cherry blossom at Okawa OsakaAll the surroundings around me are inhibited with no actions, how come?
Extraordinary unusual condition must be similar with that of just after strict warning order under the break of War. Everything is different, anything can happen in anyway.
In spite of warning not to go out and to stay at home, I went for shooting photos to Okawa between Gimbashi and Gempachibashi. The gate of Osaka Mint will not be opened for Cherry Blossom Exhibition, as a matter for regret.

Posted at 2020/04/04 21:19:23 | トラックバック(0) | 日記

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「A new idea on an old lens http://cvw.jp/b/139985/43887017/
何シテル?   04/08 11:19
Kineboh! It's me!
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