FAQ FAQ  Forum Search   Events   Register Register  Login Login

Topic ClosedMirror lenses!

Page  <1 2930313233>
Author
Snegren View Drop Down
Senior Member
Senior Member

Joined: 11 November 2011
Country: Netherlands
Location: Zuid Holland
Status: Offline
Posts: 5651
Direct Link To This Post Posted: 11 January 2022 at 15:45
Originally posted by woodrim woodrim wrote:

Originally posted by Snegren Snegren wrote:

I tried hand held shooting with the Mino AF 500 at 1/320 shutter speed and the movement the IBIS causes on the sensor is such that the image goes extremely wonky. This is in silent mode, perhaps that matters. Any opinions on this?

Tripod works much better, naturally. No complaints on sharpness on these images that were taken over great distance, even as they were taken on my 'travel 3-pod.

Amazing lens, focusing a bit nervous on the LA-EA5, another thing the tripod solves.....


Paul: I do the vast amount of my mirror shooting handheld. I do use a monopod with bigger and heavier lenses. I have noticed some wonkiness when in portrait orientation but not landscape. I stopped using silent more or front shutter-whatever after finding that I was getting dark bands when using high shutter speeds. The birds have gotten used to me and are now not frightened by the shutter clank.

I did briefly use my AF Reflex this past Sunday with the LA-EA4 and suspect I must again check the micro-adjust. I'm not perfectly happy with the focus accuracy. I have not yet checked but wonder if the camera lost the setting I had in it. The last I saw, the LA-EA5 did not support the Reflex on my A7II. I may have to do the MonsterAdapter modification.


So the wonkyness is because of silent shutter. It makes sense.

The LA-EA5 requires latest generation cameras like A7RM4. Even on A7M3 it doesn't work. It's either a new camera or a Monster Mike!
“People demand freedom of speech as a compensation for the freedom of thought which they seldom use.” Søren Kierkegaard
My Flickr
 



Back to Top
neilt3 View Drop Down
Senior Member
Senior Member

Joined: 13 September 2010
Country: United Kingdom
Location: Manchester.U.K
Status: Offline
Posts: 2883
Direct Link To This Post Posted: 11 January 2022 at 15:57
Originally posted by Snegren Snegren wrote:

Originally posted by woodrim woodrim wrote:

Originally posted by Snegren Snegren wrote:

I tried hand held shooting with the Mino AF 500 at 1/320 shutter speed and the movement the IBIS causes on the sensor is such that the image goes extremely wonky. This is in silent mode, perhaps that matters. Any opinions on this?

Tripod works much better, naturally. No complaints on sharpness on these images that were taken over great distance, even as they were taken on my 'travel 3-pod.

Amazing lens, focusing a bit nervous on the LA-EA5, another thing the tripod solves.....


Paul: I do the vast amount of my mirror shooting handheld. I do use a monopod with bigger and heavier lenses. I have noticed some wonkiness when in portrait orientation but not landscape. I stopped using silent more or front shutter-whatever after finding that I was getting dark bands when using high shutter speeds. The birds have gotten used to me and are now not frightened by the shutter clank.

I did briefly use my AF Reflex this past Sunday with the LA-EA4 and suspect I must again check the micro-adjust. I'm not perfectly happy with the focus accuracy. I have not yet checked but wonder if the camera lost the setting I had in it. The last I saw, the LA-EA5 did not support the Reflex on my A7II. I may have to do the MonsterAdapter modification.


So the wonkyness is because of silent shutter. It makes sense.

The LA-EA5 requires latest generation cameras like A7RM4. Even on A7M3 it doesn't work. It's either a new camera or a Monster Mike!


An advantage of the Monster adapter chip with the reflex is you can move the focus point .
With all Sony cameras and adapters your stuck with center spot AF only .

I have the reflex along with an LA-EA5 and a7Riv , but I'm considering modifying my LA-EA4 for that reason ( and just that lens ).
see my photostream on flickr;
http://www.flickr.com/photos/neilt3/
C & C welcome.
Back to Top
woodrim View Drop Down
Senior Member
Senior Member

Joined: 19 October 2009
Country: United States
Location: Charleston, SC
Status: Offline
Posts: 1919
Direct Link To This Post Posted: 11 January 2022 at 16:22
For me too it will be just for that lens.

Paul: I did not say the wonkiness was from silent shutter. The silent shutter results in dark banding at the top of the image when shooting fast shutter speeds. The wonkiness as I understand it is a wiggling, nervous image in the viewfinder when in portrait orientation and it happens to me in loud shutter mode too.
Regards,

woodrim
Back to Top
Snegren View Drop Down
Senior Member
Senior Member

Joined: 11 November 2011
Country: Netherlands
Location: Zuid Holland
Status: Offline
Posts: 5651
Direct Link To This Post Posted: 11 January 2022 at 17:01
I mean wonki as in distorted lines in the image, not in the viewfinder. Perhaps I have to produce a sample to illustrate.

Hardly ever had a problem with black bands but that is probably because here we generally have a shortage of light while you have an abundance.
“People demand freedom of speech as a compensation for the freedom of thought which they seldom use.” Søren Kierkegaard
My Flickr
Back to Top
Micholand View Drop Down
Admin Group
Admin Group
Knowledgebase Contributor

Joined: 30 October 2005
Country: Germany
Location: MUC
Status: Offline
Posts: 16712
Direct Link To This Post Posted: 11 January 2022 at 19:48

"Foggy winter morning"

a7RIVa + Minolta MD 250/5.6 RF Rokkor
/Michael

DWEs don't grow on trees! | Posting images&links FAQ
Back to Top
Fred_S View Drop Down
Senior Member
Senior Member

Joined: 12 January 2017
Country: Netherlands
Location: Noord Holland
Status: Offline
Posts: 11602
Direct Link To This Post Posted: 11 January 2022 at 20:59
Not typically mirror, but a great shot Michael!
 



Back to Top
pegelli View Drop Down
Admin Group
Admin Group
Dyxum Administrator

Joined: 02 June 2007
Country: Belgium
Location: Schilde
Status: Offline
Posts: 33755
Direct Link To This Post Posted: 11 January 2022 at 21:04
Originally posted by Snegren Snegren wrote:

I mean wonki as in distorted lines in the image, not in the viewfinder. Perhaps I have to produce a sample to illustrate.

Hardly ever had a problem with black bands but that is probably because here we generally have a shortage of light while you have an abundance.
Paul, in the silent mode you're limited by the readout speed of the succesive lines of sensor, which is quite long vs. the actual shutter speed. So if you move your camera slightly during the exposure the subject moves slightly and straight edges become wavy or wonky. The total readout readout time of the A7Riv sensor in silent mode is 1/10th of a second uncompressed and 1/20th of a second compressed. The Riii series models are slightly faster but the Rii series even slower. So especially with a long lens you will see the effect of a slight camera movement during this 1/10th or 1/20th of a second. The A9 and A1 are the only ones with a much faster readout speed (< 1/100th sec)

And the black lines people talk about with the silent shutter you only get with electric lamp light when you see the effect of the 50 cycles alternating current. Sunlight is continuous enough not to see this effect

Edited by pegelli - 11 January 2022 at 21:25
You can see the April Foolishness 2021 exhibition here Another great show of the talent we have on Dyxum
Back to Top
pegelli View Drop Down
Admin Group
Admin Group
Dyxum Administrator

Joined: 02 June 2007
Country: Belgium
Location: Schilde
Status: Offline
Posts: 33755
Direct Link To This Post Posted: 11 January 2022 at 21:10
Originally posted by Micholand Micholand wrote:


"Foggy winter morning"
Nice and moody, great shot indeed!
You can see the April Foolishness 2021 exhibition here Another great show of the talent we have on Dyxum
Back to Top
Howard_S View Drop Down
Senior Member
Senior Member

Joined: 20 March 2008
Country: United Kingdom
Location: Oxford
Status: Offline
Posts: 4167
Direct Link To This Post Posted: 12 January 2022 at 00:39
Thanks for the earlier remarks about dealing with the baffle on the Vectis 400. I had asked because I had looked at the rear of my lens and inspected the baffle, (look away now) put my finger in and the baffle came out with the smallest of tugs. I put it back in but now the manual focus appears not to work, with the lens apparently fixed on infinity.

I'll study the link Woodrim posted, but I'm not confident about making the contacts connect again.

Good while it lasted, but I was planning using it with my S1 at one point.

Ho hum; back to the AF 500.
Howard Stanbury Instagram | Flickr | Web
Back to Top
neilt3 View Drop Down
Senior Member
Senior Member

Joined: 13 September 2010
Country: United Kingdom
Location: Manchester.U.K
Status: Offline
Posts: 2883
Direct Link To This Post Posted: 12 January 2022 at 01:47
Originally posted by Howard_S Howard_S wrote:

Thanks for the earlier remarks about dealing with the baffle on the Vectis 400. I had asked because I had looked at the rear of my lens and inspected the baffle, (look away now) put my finger in and the baffle came out with the smallest of tugs. I put it back in but now the manual focus appears not to work, with the lens apparently fixed on infinity.

I'll study the link Woodrim posted, but I'm not confident about making the contacts connect again.

Good while it lasted, but I was planning using it with my S1 at one point.

Ho hum; back to the AF 500.


Do we really need to have a conversation on you being more gentle when your sticking your finger in a hole ?!
see my photostream on flickr;
http://www.flickr.com/photos/neilt3/
C & C welcome.
Back to Top
Howard_S View Drop Down
Senior Member
Senior Member

Joined: 20 March 2008
Country: United Kingdom
Location: Oxford
Status: Offline
Posts: 4167
Direct Link To This Post Posted: 12 January 2022 at 09:37
Well, I did say 'look away now'!
Howard Stanbury Instagram | Flickr | Web
Back to Top
Micholand View Drop Down
Admin Group
Admin Group
Knowledgebase Contributor

Joined: 30 October 2005
Country: Germany
Location: MUC
Status: Offline
Posts: 16712
Direct Link To This Post Posted: 12 January 2022 at 18:17
Originally posted by Fred_S Fred_S wrote:

Not typically mirror, but a great shot Michael!
Well, when there's no edge/spot/highlight in the background, then no donuts

Originally posted by pegelli pegelli wrote:

Originally posted by Micholand Micholand wrote:


"Foggy winter morning"
Nice and moody, great shot indeed!
Thanks Pieter!
/Michael

DWEs don't grow on trees! | Posting images&links FAQ
Back to Top
Miranda F View Drop Down
Senior Member
Senior Member

Joined: 11 January 2014
Country: United Kingdom
Location: Bristol
Status: Offline
Posts: 4019
Direct Link To This Post Posted: 13 January 2022 at 16:22
Originally posted by Snegren Snegren wrote:

It appears the Rubinar MC 4.5/300 contains a 1.3x teleconverter in its optical scheme that can be removed (don't know how) to obtain a 3.5/230 Mirror lens with some vignetting on FF. Neat, right. Not that I'm going to try it, the MC Rubinar's go for like 600 Euro.

Interesting. I have a f5.6 300mm Paragon mirror lens which is quite sharp.
Miranda F & Sensorex, Sony A7Rii, A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras ...
Back to Top
woodrim View Drop Down
Senior Member
Senior Member

Joined: 19 October 2009
Country: United States
Location: Charleston, SC
Status: Offline
Posts: 1919
Direct Link To This Post Posted: 14 January 2022 at 15:53
Originally posted by Howard_S Howard_S wrote:

Well, I did say 'look away now'!


That's when I started paying attention.
Regards,

woodrim
Back to Top
Dyxum main page >  Forum Home > Dyxum Photographs > Themed Views Page  <1 2930313233>

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.078 seconds.

Monitor calibration strip

Dyxum.com - Home of the alpha system photographer

In memory of Cameron Hill - brettania

Feel free to contact us if needed.