ahpingko : Find yourself lo. How to share?

cassplayer : Stop corking wei. LOL.

K la k la, later show 1 noob pic, using kitlens take of the tap + water

Let me know if u want to sell ur tammy SP90

Kul | Mo0 : no need say when 1st i get my tammy sp90 lousi shot lah haha that time still dun get it what hahah

guys ah, normally what setting u all use for shooting a single object?..such as a flower or an toy model?..the AF area, using spot?..and metering mode using center?..how abt the AF?..using single AF or auto AF or continuous AF?

Well, depends on how much u want to frame it..
but based on what I think u re thinking.. normally I go for Spot metering or maybe Local.. metering is spot metering unless ur subject is bigger than what I think then i ll use center.. AF single would do find for me =D

hmmm... I feel being left behind la.
Many already have more than 1 kit lens, macro lens, zoom lens, UWA lens, fish eye lens, prime F1.8 , F1.4 .... waaaa

me until now still using 1 lens... A550 + 1680Z kit lens

Anatomy Of A Gear-Stripped Lens

Some of us with old screw-driven Sigmas, the Sony 18-70mm F3.5-5.6 DT kit lens, and even my Tamron 200-400mm F5.6 LD 75DM, have experienced gear stripping - that is, the internal gear track of the lens has broken, usually a few gear teeth on a plastic track. What does this mean?

I'll open my gear-stripped Tamron 200-400mm to show you! I've sent this to repair before, but they said they were out of parts (this is the first generation of this lens, and the second-generation 200-400mm was then made obsolete with the Tamron 200-500mm F5-6.3.

The symptom of a gear-stripped lens is simple - mount the lens on camera, turn it on, and the camera will focus the lens to infinity... and it will start vibrating and making a loud whirring sound there. The reason is that the gear cannot catch onto the teeth because it is broken. You can then change your camera to manual focus, and then turn it towards close focus. Auto focus may work, but if you miss and the camera hunts, it will get stuck at infinity and vibrate again.

Note that this does not only happen to Alpha-mount lenses - Nikon F-mount lenses can get it too. Also, this was a good reason for Sony to dump the 18-70mm for the Sony 18-55mm F3.5-5.6 DT SAM which has a in-lens motor and would not face this problem. Likewise for the Sigma lenses with HSM - they would not face this problem.


Anyway, the A-mount is rather simple from the back - there is a black shield piece (in between the metal mount and the rear optics.) You need to remove this first.


Note that the information chip gets in the way - so you gotta pull it aside without breaking it. Here, the black shielding piece is removed. The black-colored metal piece with two silver screws close together, is the aperture lever, and the other black-colored metal piece with two widely spaced silver screws, opens and closes the aperture blades by transferring motion to the aperture pin.


After removing the metal mount, I could remove the gears - here, it changes the gear ratio to a much slower one. Note the large gear in the bottom-right - this is in contact with the gear track. The screw drive of the camera connects to the shaft in the top-right. All metal.


I then removed the rear lens collar bit, and viola! Here's the broken gear track. The broken teeth are in the top-right corner. The hole is where the aforementioned large gear transfers rotation to the lens.


In theory, I could drive a nail down where I have marked it in red, to prevent the lens from getting to infinity (and thus getting stuck on the broken gear teeth.) However, my later pictures will show you why it can't be done.


The screw drive shaft, and the aperture uh... pin.

This post has been edited by albnok: May 9 2010, 04:10 PM

fansoption : Yea now you can produce pretty good macro shots dy. Give you 3 months time, you'll become the new macro sifu here. (:

Banzai_san : What to feel left behind about? Your KITLENS is a ZEISS wei. XD

I then removed the outer part, with the focal lengths marked. As it turns out, the gear track is on that big long plastic tube in the top-left!

If I had embedded a nail, it would have stopped the big long plastic tube from rotating.


I removed the big long plastic tube with the gear track. This is almost as long as the lens, when retracted! No wonder the gear track is not made of metal - if it was, it would make the lens a lot heavier, and the focusing would be slower due to the weight.

Slightly out of focus, and to the right, is a rod that grabs onto a pin that pulls the focusing group nearer or further, to focus.


My thumb is holding that pin. Here it is at minimum focus distance. If I let go, it will roll down, and focus on infinity.


Fully extended. The gold-plated track tells the chip what the focal length is.


I also peeled off the label on the focus ring, but I could not unscrew the screws (they were too tight) so I couldn't open it any further.

My initial plan was to stop the lens from going to infinity, but seeing how it wasn't possible (the focus ring would've been my last hope) I ended up reassembling the lens but leaving the screw drive shaft out. So there is a hole where the screw drive used to be, and the camera will try to spin its screw in there if in AF. Focus confirm, autoexposure and SteadyShot work fine. I just have to manually focus, but at least it doesn't have the annoying gear-stripped symptoms. Also, since there is no screw drive, manual focus is very, very smooth!

FFFFFFFFFFFFUUUUUUUUUUUUUUUU just cleaned my sensor.

Had dust spots on it

I thought you just started photography no? LOL..
be patient =P

Getting left behind just because you don't own ALL the lenses will not make you the worse photographer in this world.

Getting left behind cause you waste most of your time dreaming when will you able to afford this, why some people can afford this, why are you still with kit lens this and that bla bla instead of using that precious time to improve on your shots will certainly make you one of the worst photographer in this world.

This post has been edited by vikingw2k: May 9 2010, 04:14 PM

i only have the 550 body + 18-55 lens...hehe....7 days old DSLR owner...xD

I only got phone camera

ur kit lens is Z lol..it bit all my lens and watever thing i have

did someone ask for 50mm f1.8 poison...???

some shots taken during my company event in putrajaya yesterday....do c&c...

1


2


3


4


5


This post has been edited by hazril: May 9 2010, 04:21 PM

yfchin2, u using the digieye tr-38...stable meh?...

Some shots I took in Feb

Got nothing to post, so post these

true lah.. i only use max 3 lense for all of my wedding assignment and still kicking ass..