Recent content by kingcrab

Oh I also found out from wiki that f/number is actually calculated as focal length / aperture diameter http://en.wikipedia.org/wiki/Aperture so a 150mm f2 lens will have f2 = 150 / aperture diameter. The 150mm f2 lens has an aperture opening of 75mm in diameter. When using a 2x...

Well the thing is I have tried to explain why i feel if you want to compare 4:3 to 35mm format you should multiply both focal length and aperture by 2. A 300mm lens is physically only 300mm from the nodal point to the image plane whether it is used on 35mm format or 4:3. We say that a 300mm lens...

Yes but if my reasoning is correct 150mm f2 on 4:3 is equivalent to 300mm f4 on 35mm. In terms of weight these 2 lenses are very similiar. Similiar in terms of price too i think (don't really know how much the 150mm f2 cost). So I guess it wouldn't be right to say that the 35-100mm f2 is...

First let me say I don't want to stir up trouble but these are what I found out when i was doing research of which dslr to buy. My understanding of why we need a large aperture is because of 1) speed 2) shallow dof 3) brighter viewfinder 1) film and full frame dslr has an area of 36x24...

Maybe I'm missing somthing here but if we're comparing a 4:3 lens to a 35mm equivalent shouldn't we multiply both aperture and focal length by 2? ie 150mm f2 on a e-3 is equivalent to 300mm f4 on film or fullframe dslr?

Still selling

Advertisement Category: Want To Sell (WTS) Equipment Type: Accessory Equipment Brand: Canon Equipment Model: Tamron 1.4x teleconverter Price (S$): 160 Description: Hi everyone I have following for sale: Tamron 1.4x teleconverter for canon. 2 years old. Works with all canon lenses except...

If it is dust should be ok ba at least for me I wouldn't do anything. If it is fungus I will get it cleaned straight away else it may spread. Any fungus is bad even if you are able to clean it off as it will eat in to the coating on the lens. Scratches are the worse as I don't think there are...

Advertisement Category: Want To Buy (WTB) Equipment Type: Lens Equipment Brand: Canon Equipment Model: 100mm 1/2 or 135mm 1/2L Budget (S$): Please quote Description: Serious buyer, please let me know if you have one for sale. Real Name: Matt Warranty Status: N/A

Advertisement Category: Want To Buy (WTB) Equipment Type: Lens Equipment Brand: Canon Equipment Model: 100mm 1/2 Budget (S$): Pls quote Description: Hi looking for one. Not fussy about cosmetics but optics should be free of fungus and scratches. Some dust is ok. Prefer with filter although...

Looking for mkI

Advertisement Category: Want To Buy (WTB) Equipment Type: Lens Equipment Brand: Canon Equipment Model: 200mm 1/2.8L Budget (S$): Pls quote Description: Hi PM me if available. Real Name: Matt Warranty Status: N/A

Yup yup. I'm looking out for a 200mm mkI as I hear it's the same quality wise as the mkII. I saw someone selling it on buy and sell for 750. Think he sold it already though....

Well the other thing is that my other lens is a 17-85. Though I plan to get a 100mm 1/2 soon for low light indoor shoots. Is the gap from 100mm to 200mm replaceable by cropping? Will I lose a lot of the image?

Advertisement Category: Want To Buy (WTB) Equipment Type: Accessory Equipment Brand: Canon Equipment Model: BG E3 Budget (S$): 100 Description: Hi, i'm looking for a battery grip for my camera. Let me know if you're selling. Real Name: Matt Warranty Status: a few days