Yoshizen's Blog

Spring Equinox 2020

The photos here were taken by NZ-B lens on Nikon Z-7
But this one was by Pentax 110 24mm lens on Sony A7R-IV

Whether the day was something special or not, when it was dull, photo would be dull. Especially when it was taken by the dullest NZ-B lens. (Still, I think, even if the lens was genuine Nikkor or Pentax 110 lens, the sky like this will be looks like dull —– What else ? )

By NZ-B lens

Whether western people feels it is not so special, Japanese cerebrate both equinox as a national holiday. (春分の日、秋分の日=since those days were related to the rice growing agricultural calender they are important in the Japanese tradition)

The same sky in the evening, taken by NZ-B lens on Nikon Z7 —– I like this soft tone.
And the same sky, further down in the evening by Pentax 110 24mm on A7R-IV

The sky looks quiet.


3 – 11 Sunrise

Like on the morning of 9-11 in the United States, the sun doesn’t rise straight on 3-11 in Japan.

6:51 / This photo was taken by the Pentax 110 Auto 24mm lens on Sony A7R IV

And I saw it the same in here.

7:06 / P-24mm on A7RIV
6:55 / Distagon 18mm on D850
6:57 / Godo lens on N-Z7
7:03:05 / Godo lens on N-Z7
7:03:22 / Godo lens on N-Z7
7:05 / Distagon 18mm on D850
7:03:22 / Godo lens on N-Z7
7:07 / Godo lens on N-Z7
7:59 / Godo lens on N-Z7

Nine years ago Japn saw its one of the biggest earthquake and the Tsunami. Since then even the sun seems to aboid to see the eye to eye straight. ———-


Yet on the afternoon, it turned out to be a best brilliant day in this spring !


Cherry 2020

This photo was taken by Pla-B lens on NZ-7
by Pla-B too
By Nikkor 50mm F1.2 on Sony A7R4
By Tamron SP 90mm on Sony A7R4
By Mag lens on A7R4
Mag lens
Mag lens
Mag lens
Mag lens

In the south London, we saw almost no frost = rather warmer wet winter. = May be it caused this early Cherry flowers. (I’m not sure of this variety of cherry ?) —– and the other tree = Somei-yoshino also started to open.

This Somei-Yoshino is a month too early. (Taken by Pla-B lens) —– Strange phenomenon of this photo IS, = see this photo while your one eye closed = don’t you feel that the photo looks 3D !

I hope, COVID-19 wouldn’t hit this country too hard nor the locust comes here. ( —– Yet, last July, I knew the very moment, when the 7th seal was opened. )


Moon for a Test

The photos here were taken by the Zeiss Sonner FE 55mm F1.8

It seems, the Moon on the 8th of March was a full moon (or so) = So, I clicked my camera, happen to be a Sony A7R-IV—– with a Zeiss 55mm, Olympus PenF 38mm, Pentax 110 Auto 24mm and a Nikkor 50mm F1.2.

It was an interesting test session for the lens and the camera.

Photo left = Olympus PenF 38mm F1.8 / Middle = Pentax 110 Auto 24mm F2.8 / Right = Nikkor 50mm F1.2 lens (Nikon lens has the resolution more than the 60 MP image sensor but Olympus PenF and Pentax 110 Auto lens didn’t )
Photo left = Zeiss Sonner FE 55mm F1.8 at F5.6 / Right = (old Ai) Nikkor 50mm F1.2 at F5.6

Apparently, Nikkor showed much sharper image than a Zeiss Sonner lens but there was a reason behind = AF lens on A7R-4 on Manual Exposure setting worked pretty badly = Auto Focus didn’t work, neither Focus Magnifier was there. (Focus magnifier on the A7R was very effective but not on this latest model ( = where is the Button ? ? ? = I found that the AF-on button needed to be customized !) —– Sony might be making their camera not friendly with anything other than their genuin Sony Lens. – If so, why Sony-Zeiss Sonner didn’t focus Moon ?)

Nikkor 50mm F1.2 – F5.6 — (It seems, the white balance was wrong, and the Sony’s image process was too funny = make a moon looks like plastic ball was dreadfull.

You would say that to take picture of the Moon with 50mm lens was the crazy idea. THOUGH, the 60 MP Sony A7R-4 image sensor should be capable to be enlarged to such extent. And this picture demonstrated it well. (It’s works as long as the lens was good !) (You can see a proper Moon shot here )


Magnolia by Normal lens


Again, they are the same Magnolia flower but taken by the ordinary lens = Nikkor 50mm F1.2 (set at F1.2)


With wide open iris = F1.2, DOF was very shallow and out of focus bokeh was such big.

N50-1.2 no ext ring

And, this was really the ordinally (without an extension ring) shot. 😀


Then, those following photos were taken by the Zeiss Planer 85mm F1.4 (at 1.4 setting and with extension ring)


Zeiss 85mm has a bit smaller F-aperture but longer focul length = so that having a more or less the same DOF —– still show a bit more solid image.


Pentax K 20mm F4 on N-Z7

It was so long time ago, I don’t remember how and why I got this Pentax ME body. (I had a Pentax SP = M42 mount and Pentax 6×7 — I think I had Pentax MX for short time (Where that camera has gone ? ? ?) and for this ME body I think I bought this 20 mm lens as a body cap.

Photo right: On the Nikon Z body, a NEX to NZ adapter was first attached, because there are almost any lens adapter exists to NEX but very few to NZ in the market. (Some of them got loose bayonet kind, still usable = better than noting. Don’t expect too much for £5 product. 😀 )

Like a much loved Pentax 110 Auto 24 mm lens, why not to use other small lens on Nikon Z —– (other than fuzzy homemade lens. 😀 )

Unlike 110 Auto 24 mm, this K mount 20 mm was not very small still, it is smaller than today’s lens. Optical quarity is not too bad. (considering the price of a body cap = £50 or so ? )

I’m sure, like this situation, shot on a film camera fails. I set the ISO 400 on NIKON Z7 though, the camera set the ISO 25,600 by himself and exposed on 1/50 (aperture was F4) —– even over the double grazed window, the image was quite usable. (What a progress)


Early Magnolia 2020

In this post, the photos were taken by a homemade lens Godo Lens, except no.4.
Those photos were taken by Tamron SP 90mm Macro on Nikon Z7.

I featured this flower twice (?) before using another fuzzy lenses. But, it seems the people takes the flower branch home there is no branch left on the lower part of the tree, and made me very difficult to take picture. (So, I needed to resort with something special measure. 😀 )

Those following five pictures were taken by the other homemade lens “Pla-B” Lens” —– though, with the bad weather I trid three times to get a kind of results. 😀


Walk with Godo lens

Among my homemade lens, being as if it was almost ordinary lens, Godo lens is the most remarkable lens. There was no eccentric feature like 1/2, 1/4 lens kind but two ordinary unknown origins lens put together. (yet, one of them came from my friend Gordon = hence Godo lens ) And the lens happened to produce quite normal image (if not a lots of halation) together with quite nice softness. On top of that, thanks to a Chinese helicoid ring, good convenience of close up use.

I went back to the so-called Perpetual Cherry Tree and found that the area was in a construction site. (Tree was still there and seems flowering though)

I’m not sure whether they are bamboo or reed ?
I like a natural looks quality of this macro. (Too sharp image of most of macro makes the flower looks like an animal body parts) – – – Unless the one was a forensic scientist, we may not like to see too sharp detailed flower parts.

For the cost almost nothing homemade lens, I would say, this is the good lens.


Heaviest Gadget for 6×7

This is a homemade bellows for Pentax 6X7 camera, I made it 45 years ago. — ( I was working for botanical photography at the Uni’s Makino Herbarium then. Though, I was using more of 35mm Nikon camera – – – – since, Makino’s archive was 35mm Kodachrome and 6×7 camera was mostly for other journalistic subjects.)

This bellows’ solid structure does well stand against the heavy shutter, mirror shock though, the whole unit (with camera body) was too heavy to carry around = it never went out field. (For field work, I was using 135mm F4 Pentax 6×7 macro lens.)

So now, it is more like a technical sample or, industrial remain. 😀

( And in reality, this device didn’t under take the work much = theoretically it should be useful though, in practice, there isn’t much needs of tilt and shift, and in most of the case, the depth of the field of macro lens when it was stopped down, could cover the needs.)


Simple Arithmetic

In the previous post, I mentioned the strength of the image and the size of the lens. When the inside-lens was 6mm and the outside was 14mm, of course the image made by the outside-lens would overwhelm the image of the inside-lens. The image made by the inside-lens will almost disappear like a halo caused by the dust.


We can calculate the area size of the lens = 3.14 x R x R – – – but we can see just the relative size as 6×6 against 14×14. In the 14×14=196, 6×6 was the inside-lens – – – 196 – 36 = 160 – – – 160 is obviously too much – – – it got to be about 72 (36+36) and the root of 72 = about 8.5mm – – – it’s mean, if the outside-lens was 8.5mm, the area of its ring shaped lens was the same to 6×6 inside-lens —– The image strength should be the same ! (The Bokeh image made by the inside-lens should be as strong as to the outside-lens’s sharper image.)

While restricting the 14mm to 8.5mm size, effect of the outside-lens was reduced = the inside-lens bokeh became more prominent.
This was not just fuzzy lens but rather sharp (kind of) lens and Bokeh lens conbined = therefore it has certain sharp (?) details.

How awkward = like a useless game of Sisyphus. – – – In fact, that was what all about the game I’ve been plying here = making the lenses.


And that was what Lord Buddha told to his disciple, for sweeping the garden to Shuri Pantak, knocking the door to Kisa Gotami. – – – – – Why not to me make the lenses. – – – Why not ?

I like the tone (color shift) of this picture. The watercolor paint which the brush was not well washed = its color has been fused or casted. 😀


Those images were made on the Nikon Z7 – – – I think, the softness was just right. (Soft mean, the neibouring pxel’s data were spilled out and infused each other hence the edge of the small details disappeared and the color mixed – – – how wide this infusion occur is the depth of the softness. Or the spread of the light. = Bokeh ! )

When the subject was good, any camera can make nice picture. 😀


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