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Topics - RAKAMRAK

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Third Party Manufacturers / zeiss filters
« on: November 20, 2013, 02:42:03 AM »
I was reading about the new zeiss lens and this question came to my mind - what about zeiss filters? Do they make filters? So I searched their website and yes they do. So I have a questions for you guys have any of you used zeiss filters ever - specially the CPL? I always read good things about B+W filters from all of you, what about zeiss filters? anyone?

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Are "High ISO" noise and "long exposure" (at low ISO) noise the same qualitatively? Or is one slightly more managegable than the other? (Practical Reference: When photographing a night scene of a city is it preferable to choose high ISO and faster shutter speed, or is it preferable to choose low ISO slower shutter speed, assuming I do not want to consider the motion blur of moving subjects resulting from slower shutter speed as a factor)

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Lenses / Internal Zooming Standard Zoom
« on: August 30, 2013, 06:19:14 PM »
Just wondering if any of you know whether an internal zooming standard zoom is possible (either EF or EF-S, but I guess if one is possible, the other would be too)? It might be nice to have 17-55 EF-S (or 15-85 EF-S, or 24-70 or 24-105) which does not extend. Opinions?

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Lenses / What is the deal with Canon 135mm f/2.8 soft focus?
« on: August 16, 2013, 07:57:55 AM »
I was wondering what is the the deal with this lens? There has been no update of this lens (as far as I know) from its version 1. No one here on CR talks about it or asks of it or mentions it!! There is not even a lens gallery for this lens on here! So no one uses/has this lens here? Just idly wondering.

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Site Information / Modifying my signature
« on: August 11, 2013, 06:55:53 PM »
Some of you have a link to your Flickr (sometimes other websites) photo pages in your signature. I too have that. But some of you have just "Flickr" written instead of an URL like mine and clicking on takes us to your Flickr page. If it is not too much trouble could any of you please share how to create such a link.

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Technical Support / Canon AF videos
« on: August 08, 2013, 12:10:13 AM »
Found a series of videos on youtube regarding Canon AF system. Many of you might already have seen these (and these are bit dated) but others may not have. I found these very useful.

https://www.youtube.com/watch?v=iAx86nblZ2g

After looking at the part 1 (above) you can easily find part 2 and 3 on youtube.

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Some of my recent photos.... C&C welcome.

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Just wondering if any of you have used either of these older lenses from Sigma .... internet reviews say they were good, but just wondering if any of my CRian friends have firsthand experience with either of these two (by off chance)....


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Lighting / Tested true freedom yesterday
« on: July 21, 2013, 05:06:30 PM »
Yesterday I was going to a friend's place to visit. This friend has two one year old twins. So I took my camera with me along with the recently bought four YN 622Cs. I do not have any ETTL flash, so I put three Nikon SB 28DXs at 1/2 and 1/4th power on top of three bookshelves directed towards the ceiling. The walls were coloured, so the white ceiling was my best bet for reflecting the light. Now, earlier I used to use cables to fire my flashes remotely, and that was cumbersome and clumsy. Boy, yesterday with the four YN622Cs (one on top of my camera, and the other three with the three SB 28DXs) it was so much easy and fun photographing the twins. I was not going for any dramatic lighting, I just wanted enough soft light to use a shutter speed fast enough to capture the twins's activities indoors (and the sudden moments like the photo below where one of the babies falling down after throwing a tantrum). It felt so great just to be able to reposition the lights without breaking a sweat. Some photos from yesterday attached. (Now I need to learn a bit of more post processing) Your comments are most welcome.

PS: YN 622Cs are my first remote flash transceivers. And they seem to work just great in manual mode.

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Software & Accessories / Any suggestion about back pack?
« on: July 08, 2013, 02:57:44 AM »
I have been using a case logic camera backpack for two years now. It can hold my cameras and lenses well, but after repeated use I have found out one sever limitation of this (or this "type of backpacks"). So I am looking for something "different".

Ok, so what is the limitation? To be specific I use the Case Logic DCB-309 model which can be seen here
http://www.amazon.com/Case-Logic-DCB-309-Camera-Backpack/dp/B004JMZPK0/ref=sr_1_6?ie=UTF8&qid=1373265907&sr=8-6&keywords=case+logic+camera+backpack. Now this bag can carry all my gear when I am going from one place to another in car, or aeroplane or some vehicle. The problem is when I am walking around. But its entire frontal wall/side comes off (except the bottom hinge part) when the zipper is opened to access the camera. So If I am carrying two cameras one at the top end of the bag and another at the bottom then to access the camera that is at the bottom I have to open the entire bag. This creates lots of problems for me. And I do not like it.

Therefore I am looking for something like a lowepro Fastpack or case logic kilowatt ksb 102 (see here http://www.amazon.com/Case-Logic-Kilowatt-KSB-102-Backpack/dp/B009M3UULK/ref=sr_1_4?ie=UTF8&qid=1373265542&sr=8-4&keywords=pro+dslr+back+pack). Now each of these bags (and may be some others) has a side opening system. I can keep a camera at the bottom of the bag and take it out sideways. So far so good. But my issue I want to carry a second camera in the same bag - in the top compartment which opens from top and front without opening the bottom compartment. My question is have any of you used these back packs in this particular way? Can the top compartment hold a second camera body - of course not with a tele lens but may be with a wide angle or walkaround zoom (say canon 17-55)? The reviews on amazon does not specificially address this issue. Otherwise do any of you know/have used any other bag with this particular facility - one side open compartment at the bottom, and one top/fron open compartment at the top - for two cameras?

Thank you for your time and patience - the post became too long.


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Third Party Manufacturers / Anyone For Microscope Photography?
« on: June 29, 2013, 10:41:47 PM »
I am trying to learn a bit about Microscope Photography/Photomicrography (or whatever it is called). Any one here done this type of photography? Any guidance/direction will be appreciated. Thank you.

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In the lens gallery I did not see any specific thread for this lens, so just creating a new one.

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EOS Bodies - For Stills / 50D grip becomeing white
« on: June 19, 2013, 01:33:31 PM »
I have a small concern about the leather/soft/rubberized parts of my 50D. As you know its normal color is black, but mine is showing a peculiar whiteness within this black color - specially in the "channels" or "grooves" of those rubberized parts. No problem with the metal parts though. Any idea about this? Thanks.

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Lenses / Lens sharpness and distance from subject
« on: April 26, 2013, 01:54:29 PM »
I was wondering whether and how much the distance from the subject affects sharpness of the image taken by different lenses (on same sensor). Is there any website or source where such information may be available for Canon lenses?

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