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Tokina SD 28~70/F3.5~4.5 was employed today for flower shooting at Osaka Tsurumi Green Garden with being accompanied by a professional photographer. This lens was invaded by mold atack not a little but this problem was solved by desperate effort done by myself. Physical performance of this newcomer lacked nothing if compared with MD Macro Rokkor 100 mm/4 that was brought with me today. Especially, Macro function was so helpful in case of close up shooting.

Tokina SD 28~70 F3.5~4 Zoom lens has been obtained through Yahoo Auction at 400 yen and disassembling and greasing-up on helicoid could survive it like new condition. Simple and lighter construction make it possible to give some adequate maintenance on it. Though I didn't desire much on this cheapest one, The Goddess of Luck never gives me up!
The information of this tinny lens tells that some extraordinary dispersion glass material was invited in the constructive design, so the axis chromatic aberration might have been well eliminated leading to sharper resolution. Also, Macro function at 70 mm would be so helpful in case of close-up shooting such as flowers.
Coming Tuesday would be the next trial for flower shooting at Tsurumi Green Garden "Sakuyakonohanakan" with a female professional photographer.

Awful Mutant virus strain in England are now prevailing in our country miserably, with 1.7 times stronger power to infect among people. On the other hand, staying at home is not the only way to stop scattering, in spite of ignoring the reduction of immunity capability. Repeating Locking Down in Europe produced Infection Explosion several times already. No good news are discerned from any Medium. I wanna know which way to choose? Though we should follow and obey the Government Decision, still now we are at a loss where and which direction to go, because the responsibility depends on an individual determination as a matter of fact. The Authority does not always make the best decision, not almighty and omnipotent, not an all purpose good. I would like to pray to God for peace and well-being.
"The dark cloud should disappear as the cherry blossom bloom!"

As an engineer's report in Website about MD Rokkor 85mm/2.8 Varisoft threatened me because of complicated barrel construction. Even a professional was obliged to reassembling, double helicoid and additional spherical aberration adjustment. In spite of a slight mold colony exists inner surfaces, I have been leaving it untouched for long time. Unreachable frustration to the clogged surfaces forced me to try disassembling this bad habitual Rokkor lens this time.
Though I hoped there must have no irreversible defect inside of it, I found out a lack of a small bis it has a relatively plays a good part as shown in a pic. Some former engineer, probably private one, must have lost it by accident and ignored the fact, it would not appeared until disassembled. Alternative part should be applied here, if it is not a genuine part. These 3 small bises are adjusted not to increase slipping resister of the iris control ring.

When I ask to a discharged infantry, "What a Rifle gun menas while you were in a strategy action?" He replies, "It is the only way of survival!". But for a rifle gun with me at hand in the operation, I must avoid it and run about away from the enemy's range. In another words, Rifle Gun is the only armer to make me feel strong and bramb in the field.
There are several photographic camera tripod manufacturers that also produces military machine gun supporting mount. SLIK is the company equivalents to the manufacturer in Japan. As we know, stout and solid supporting is indispensable for machine-gun operation, otherwise Hit rate would be reduced, hard, heavy, stout and strong are the character to be required for long barrel gun.
As for photo shooting with long focus lens on, the situation resembles with gun support on Earth, do you think? Here, gun is camera and amor is pic we shoot. The stouter the support is, the better score of the shooting result. Consequently, also camera and lens supporting structure should be sturdy AMAP.
Most of the photographer desire more stout tripod with the least weight, so supporting legs made of Carbon Fiber material have been utilized recently. In the windy scenery mas-stabilizer is required on the bottom of tripod for the countermeasure. Also, carbon fiber material needs some period of time to suppress vibration because of it's innate physical property, too strong toughness.
I prefer aluminum alloy material for tripod as a matter of fact.
Recently, sophisticated technology for anti-camera-shake has been progressed as to cover 5 step down to lower shutter speed and even 300 mm long focus lens can be hold by hand. Not a few photographer with week intention deserted a heavy tripod defeated by the temptation by Satan.
We must remember that the difference between camera body anti-camarashake system and Tripod supporting if the pics are enlarged at actual pixels ratio.
Former method never exceeds conventional mechanical Tripod at all!