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08-04-2012, 09:24 PM - 1 Like   #1
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Toying with the #04 Toy lens wide (internally modified).

After reading Ve2vfd's fisheye modification post, decided to try it with the Toy wideangle. Many feel the Toy isn't very toy like. The modification removes the aperture tape square inside the lens. After reassembly it was dark outside so this is a hand held low light at high ISO. Will try it out more tomorrow in brighter light. Yes, the lens can be returned to normal operation.
thanks
barondla

Have I mentioned lately the Q is fun?

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08-05-2012, 05:05 AM   #2
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Thanks for sharing. Looking forward to more photos!
08-06-2012, 05:44 AM   #3
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Mmmn, tubes.

I'd love to see some outdoor shots.

What is the effective aperture?

If it doesn't get as horrific as the fisheye with the aperture disc removed, I will buy a toy wide just for this purpose!
08-07-2012, 02:16 AM   #4
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Looking forward this thread

The wide toy lens is tempting but the f5.6 make it unsuable during evening and for indoor.

But if you tel me that it can be pushed to f4 or 3,2 or even 2,8, it can become super interesting !!

08-07-2012, 03:50 AM   #5
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I think the toy wide is f7.1...

The fisheye is f5.6. My estimation wide open was f2.5, or 2 1/3 stops. We shall see where the toy wide lies
08-07-2012, 11:14 AM   #6
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i've just checked and yes the wide is f7.1

Barondla, next time, check at 100 iso beause on the picture, i don't know if the result is due to the lens or the sensor
08-08-2012, 02:44 PM   #7
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Lens exhibts a white "fringe" around the subject and has lower contrast. My favorite way to shoot is on high contrast ( 2 bars on parameter setting) in digital filter mode. Included one image not shot on high contrast. Will explore further.

thanks
barondla
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08-09-2012, 03:14 PM   #8
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Oooh, dreamy and romantic. Is it wrong to fall in love with farm equipment?

08-10-2012, 12:33 AM   #9
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ROFL !
08-10-2012, 06:16 AM   #10
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I like that. Much more toy-like. Certainly VERY low in contrast, but the high contrast mode plays well with that.

Have you estimated the aperture yet? I'm very curious.

Also--I'd love to see a shot in bright sunlight. That coma and flare could be... Interesting
08-10-2012, 06:49 AM   #11
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Aperture is approx f3.2. Will take more shots with bright light.
thanks
barondla
08-10-2012, 07:43 AM   #12
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So it may be possible to build a F4 aperture

This wide lens suddently seems very appealing
08-10-2012, 08:02 AM - 1 Like   #13
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If you take the original aperture and divide it by the square root of 2, you get to the next full f-stop.

I wouldn't use it fully open, try f/4.
08-10-2012, 07:41 PM   #14
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In search of f4 and making a new aperture.

Studying the aperture tape trying to figure out the best way to make one. Pentax made the two positioning holes different sizes. No idea why. So 3 different hole sizes are required to replicate the original part. Will check out the craft store to see what size punches are available. The hole size is tiny vs a standard 3 hole notebook page

What happens optically if the aperture is not perfectly centered? Does it change the aberation? This is a Toy lens!
thanks
barondla

Last edited by barondla; 08-11-2012 at 05:59 AM.
08-11-2012, 03:19 AM   #15
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QuoteOriginally posted by barondla Quote
What happens optically if the aperture is not perfectly centered? Does it change the aberatiom? This is a Toy lens!
i guess all the frame won't be equal in term of optical quality, but it's just a guess.

For fun : if you do a square aperture tape , the bokey will be done with square. Same with stars, or any kind of non-circle aperture tape you can do. i will do that
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