Sounds fantastic, but the 135mmL is not exactly a big seller, so don't expect it. I'm planning to use my 135L for 500 or more theatre photos tonight, its my most used lens, so I'm one of those who would be in line to buy one..
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From the source: http://cpn.canon-europe.com/content/education/infobank/lenses/black_or_white_lenses.do+1
Not afraid to ask stupid questions as it's the best way to learn and normally people on this forum will give informed answers.
My question is around variable aperture in lenses. Why do lenses with variable as opposed to fixed aperture cost less? Is it a mechanicel explanation to it? I can see that more advanced optics will cost more with more glass going into the lens, but don't understand the dynamics behind aperture.
I'm in the IT business and have been for many years, hardware related features sometimes costs more to develop and produce and somteimes it is simply down to charging more for better functionality - higher margins from customers prepared to pay premium for higher performance.
I would be happy to understand more about this.
thanks in advance
Its a simple mechanical explanation, the lens glass much be much larger at the long end of the zoom if you want a larger aperture, and that costs a lot more.
Consider the 100-400mm f/4.5-f/5.6 L Zoom. At 400mm, its f/5.6. Now price the 400mm f/4 lens, its $6,000, and a lot of that is due to its much larger diameter of the lenses. A zoom would be about $11,000 as the much awaited 200-400mm f/4L is expected to cost.
The diameter of a lens element drives up pricing because its so much harder to make to the extreme accuracy required.
Canon started marking the serial number of refurbs about 1-1/2 year ago, but not all the refurb stuff I've bought has a defaced serial number. I suspect that they are more diligent about marking new products like the 5D MK III which only came out last spring, and would still be covered by warranty at least until may or so for those with no bill of sale.I purchased a used 5DII in the past year. My considerations were (1) is it at or below below market price (2) excellent condition (3) low actuations (4) 100% positive feedback on Ebay. Nice to haves were original packaging and receipt. I would not have had an issue purchasing a refurb body if the considerations were met. I have purchase refub lenses and P&S and have had no issues at all.
Did the 5Dii have a pin hole in the serial number plate on the bottom of the camera? Just curious, it sounds like this is something new by Canon and if so, wondering why they decided to do it?
Thanks for the tip!!
I just purchased Reikan FoCal, and now I'm like all confusedIt is really important to have stability and accurate alignment to the target as well, so be sure to use the target alignment feature.
I ran 3 test with my 1dX and 50 F1.2 and I got : 7, 10 and 9...and when I then take random pictures I seem to get better focus with 0 value!!!
i'll have to see what is not normal.
1- Where do you enter the value of the value - on the chart sheet? In my case I put in the Large Target width (in the preferences pane)
2- The distance is like 2.2 meters
3- My ev is lower than wished but still is within specs.
anyhow...not as quick win as I thought... I just seem to get soft focus with my 50 at 1.2....but now that my 0AF adjustment value...just puts lots of confusion in my head :-)
Purchase of commercial-off-the-shelf items is rarely purchased through competitive bids.If you have ever qualified items for use in space, as I have, you will find that they must be tested thouroughly and then receive a formal approval. They then receive a separate part number due to the fact that there will be something modified. This takes them outside the realm of off the shelf items. They have to withstand the vibration, shock, temperatures, and a host of other things. The biggest issue is that equipment often gets worn out from the testing.
Most likely someone in NASA determined that, for whatever reason, Nikon more closely met the technical requirements for NASA's mission. So it would just be matter of going to the catalog and making the buy.
I am having connection/tethering issues. Tried tethering my 5D Mark 3 to Lightroom 3. Did not work. Camera shows "Busy" message and the camera wont work. tried tethering my camera to EOS Utility 2.11.1 for remote shooting. Will not work. EOS Utility quits when my 5D Mark 3 is connected via USB. My Canon 5D Mark 3 firmware 1.1.3. I am on Mac OS 10.8.2.The 5D MK III is not supported by Lightroom 3 and never will be. Update EOS Utility to the latest, you are way out of date with 2.11. That should fix that issue.
Any help, any advise will be greatly appreciated. Thank You!