Algernon

Joined: 22nd May 2010

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Algernon
vic cross wrote:
Lots of Saabs
CHEERS Vic.


Sorry. One came out upside down. Vic.
I like that one the best!

Seriously all nice shots. Great to see these classics.

Can't beat German engineering

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Comment by Algernon posted on For Peter (Ilovesaabs) at 12/05/2018 - 09:23

Algernon
This Nikon simulator demonstrates it correctly. Shows 14mm to 800mm via a slider. It enlarges what would be a crop to full width. You can see that 14mm has great depth and going towards 800mm produces the telephoto flat field of view compression. This is because the width of the distant object is being enlarged at the same time as the perceived distance is being shortened.

I said earlier "Yes distance to subject determines perspective, " it should have been "Yes distance to subject and lens magnification determines perspective," A standard 50mm lens is considered to have no magnification. 100mm = 2X etc.

Tamron also have a simulator which works correctly. You can see the flattened perspective of the long lenses.

https://www.sigma-imaging-uk.com/focal-length-simulator/
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Comment by Algernon posted on Which legacy lenses for K1? at 10/05/2018 - 17:54

Algernon
Yes distance to subject determines perspective, but to compare two lenses the cropped part has to be enlarged to the same width was the wider lens. This is where the whole world has it wrong

If you compare say a 14mm wide angle shot which gives a deep looking perspective to a crop of say what 200mm lens sees the 200mm flattens the perspective, but you won't see it until you enlarge or reduce the original so that both are the same size. Alternatively make A4 prints of both.

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Comment by Algernon posted on Which legacy lenses for K1? at 10/05/2018 - 17:35

Algernon
KingKenny wrote:
Equivalent field of view doesn't make lenses the same - the perspective exaggeration (difference in apparent distance between foreground and background) and DOF will relate to the focal length.

Because you're looking at the middle bit of a 14mm image not the full frame of a 20mm image.

I would have thought these differences in the case of comparing a 14mm versus an 18 or 20 would be significant. I have an APS-C so the comparison I would make would be between the short and long ends of my Sigma 8-16. The differences are about far more than just field of view.
There's no problem cropping a 20mm FOV from a 14mm FOV. It becomes a 20mm exactly shot. The wider lens shot has all the smaller focal lengths within it as long as you enlarge them to the correct width to recover the correct perspective.

See Barry's recent post on Depressing Review (He's also a member here).

https://www.dpreview.com/forums/thread/4281521

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Comment by Algernon posted on Which legacy lenses for K1? at 10/05/2018 - 16:22

Algernon
vic cross wrote:
I found a DPReview from a few days ago and it explains it very well.
CHEERS Vic.
Don't take any notice of their review. They don't like Pentax. Have a look at the uproar in the forum.

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Comment by Algernon posted on Pixel shift on the K1ii at 10/05/2018 - 08:12

Algernon
You mean it can order a Pizza!

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Comment by Algernon posted on Pixel shift on the K1ii at 09/05/2018 - 10:34

Algernon
stub wrote:
Not heard of Flash Q before. Interesting small product. Except they arnt TTL....!!!
That's great! Good to see that the clever people that designed it have included something for the moaners to moan at!

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Comment by Algernon posted on Pentax K1 ii vs Sony a7iii? at 05/05/2018 - 19:18

Algernon
You win £5,000 if you sit on top of it for 4 hours

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Comment by Algernon posted on What is it? at 05/05/2018 - 14:30

Algernon
stub wrote:
JAK wrote:
stub wrote:

Ps the Sony can fire a TTL flash off camera... Something the Pentax still Cant.....
Sure? What are these for then?
Lol... I'm talking away from the camera not by the side of it....And something a little more modern..."Wireless" perhaps...?
Ha! Ha! Sony Flash..... they changed their Hot-Shoes to non-standard and nothing fit so they had to change back again.

For any camera you can use tiny triggers such as FlashQ......

https://www.youtube.com/watch?v=OYZATta0Jg0

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Comment by Algernon posted on Pentax K1 ii vs Sony a7iii? at 05/05/2018 - 08:33

Algernon
I remember a famous musician on the radio describing how he was using the same studio as EC and EC had left his guitar, amp and pedals set up as he liked it..... He thought to himself dare I ????.... and then said sod it 'll never get the chance again so he had a play on EC's guitar and then said to the interviewer...... You know what?..... I didn't sound a bit like him

There's also a very good young girl singer who does covers on Youtube and people are always asking her what make of mike she uses????

She's well worth a listen and it's not the mike that makes the songs...
https://www.youtube.com/user/TantrumJas/videos?sort=dd&view=0&shelf_id=0
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Comment by Algernon posted on Pentax K1 ii vs Sony a7iii? at 04/05/2018 - 17:38

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